774 results about "Air dryer" patented technology

The invention relates to a compressed air supply system (100) for a sensor cleaning device (301) with a compressed air connection (1), a compressed air supply connection (2), a pneumatic main line (12) from the compressed air connection (1) to the compressed air supply connection (2) and an air dryer (5, 5.1) arranged in the pneumatic main line (12) for drying the compressed air (120). The invention proposes a water separator (6) arranged in the main line (12) between the compressed air connection (1) and the air dryer (5, 5.1) and a branch line (14, 14.1, 14.2) extending from the pneumatic main line (12) between the water separator (6) and the air dryer (5, 5.1) and reconnecting between the air dryer (5, 5.1, 5.2) and the compressed air supply connection (2), which has a pneumatic branch line switching valve (24, 24.1, 24.2) which in a first operating mode (B1) controls the branch line (14, 14.1, 14.2).2) opens pneumatically in the direction of the compressed air supply connection (2), and the compressed air supply system (100) is configured in the first operating mode (B1) to allow compressed air (141) to return from the branch line (14, 14.1, 14.2). The invention further relates to a compressed air supply system (1200), a vehicle (1000) and a method (2000) for operating a compressed air supply system (1200).

The invention relates to a control method (2000, 3000, 4000) for a compressed air supply system (1200) to which a control device (1300) is assigned, comprising the steps: - Receipt (2100) of a supply requirement (Bv) by the control unit (1300), - Controlling (2200) a compressed air transmitter (200) by the control unit (1300) to supply compressed air (110) at a compressed air connection (1) when the control unit (1300) receives a supply requirement (Bv), - Identify (2300) a regeneration execution time (B R ) by the control unit (1300) depending on the supply requirement (B V ) and / or a saturation level (G) of an air dryer (5, 5.1), - Actuation (2400) of a switching valve (24, 24.1, 24.2) by the control unit (1300) to open a branch line (14, 14.1, 14.2) when the control unit (1300) has a regeneration execution time (B R) identified, - Return (2500) compressed air (141) from the branch line (14, 14.1, 14.2) against a filling direction (B) through a pneumatic main line (12) for regenerating the air dryer (5, 5.1). The invention further relates to a control device for carrying out the method and a vehicle with such a control device.

The invention relates to a compressed air supply system (100) with a pneumatic main line (12) from the compressed air connection (1) to the compressed air supply connection (2), and an air dryer (5, 5.1) arranged therein for drying the compressed air (120). The invention proposes a branch line (14, 14.1, 14.2) extending from the pneumatic main line (12) between the compressed air connection (1) and the air dryer (5, 5.1, 5.2) and reconnecting between the air dryer (5, 5.1, 5.2) and the compressed air supply connection (2), and a main line switching valve (25) arranged upstream of the branch line (14, 14.1, 14.2), between the compressed air connection (1) and the air dryer (5, 5.1), which in a first operating mode (B1) closes the pneumatic main line (12). The invention further relates to an operating method (2000), a vehicle (1000) and a compressed air supply system (1200) with a compressed air supply system (100).

The invention relates to a compressed air system (1) of a motor vehicle, in particular of a towing vehicle of a towing vehicle-trailer combination, comprising a compressed air supply system (2), wherein the compressed air supply system (2) includes a compressor connection (10) for a compressor (9) and, as separate units: an air dryer unit (3) with a replaceable air dryer cartridge (4) and a base (5) for the air dryer cartridge (4), a pressure control unit (6) with a first valve assembly (7) and a first control or regulating electronics unit (8) which includes routines for pressure regulation, and with at least one supply air outlet (11), wherein the first control or regulating electronics unit (8) controls the first valve assembly (7) at least in the sense of a pressure regulating function.to generate a pressure-controlled supply of compressed air for at least one compressed air reservoir (12) from the compressed air supplied through the compressor connection (10) at the at least one supply air outlet (11), wherein a compressed air connection is provided between the air dryer assembly (3) and the compressed air control and distribution assembly (6), which includes or is formed by at least one pneumatic line (13).

The utility model discloses a refrigeration type air dryer, which belongs to the technical field of air drying devices and comprises a cooling cylinder, an air inlet is arranged on the right lower side of the outer end of the cooling cylinder, and an air outlet pipe is fixedly mounted at the upper end of the cooling cylinder. A temperature returning system is mounted in the cooling cylinder; the temperature returning system comprises a baffle ring and a temperature returning heating pipe; an evaporation system is further installed in the cooling barrel and arranged in the temperature returning system. By means of the mode, gas communication of the gas flowing area and the pretreatment heating area is effectively isolated; and an inlet of the evaporation system is formed in a gas flowing area, so that the evaporated and cooled gas is heated, and the air drying effect of the device is further enhanced.

An air dryer cartridge including a desiccant container and a desiccant contained in the desiccant container is provided. The desiccant container includes a wall forming an oil filter receptacle recessed into the desiccant container. The air dryer cartridge includes an insertion opening for insertion of at least a portion of an oil filter into the oil filter receptacle.

The invention relates to the technical field of dehydration equipment, in particular to clam dehydration equipment which comprises a machine base, a belt conveying assembly used for conveying clam meat is arranged in the machine base, a hot air dryer is installed on the right side of the top of the machine base, a material guiding frame is connected to the left side of the top of the machine base, and a discharging hopper is installed on the left side of the top of the material guiding frame. A screen is obliquely installed in the material guide frame in a left-high and right-low mode, and an upper material guide plate and a lower material guide plate are connected in the material guide frame. The clam meat on the screen mesh can be intermittently put through the up-down movement of the baffle plate, so that the accumulation and overlapping caused by excessive putting of the clam meat are avoided, and the clam meat with different sizes can be screened through the screen mesh; through the upper guide plate and the lower guide plate, different sizes of clam meat screened by the screen can be guided to a front independent conveying area and a rear independent conveying area of the belt conveying assembly respectively, size classification of the clam meat is achieved, mixed dehydration of the different sizes of the clam meat is avoided, and therefore the quality consistency of products can be improved, and the production efficiency is improved. And the processing is controllable and continuous.

The utility model discloses a paper tube continuous drying production line which comprises a drying oven, a drying oven support, a paper tube conveying mechanism and a material receiving basket, the drying oven is installed on the drying oven support, a feeding door and a discharging door are oppositely formed in the two ends of the drying oven, and a feeding section, a drying section and a discharging section are continuously arranged between the feeding door and the discharging door. The drying section is provided with a plurality of hot air dryers; the paper tube conveying mechanism comprises a rectangular conveying frame, a paper tube conveying belt and conveying rollers, the conveying frame is installed in the drying oven, the two ends of the conveying frame penetrate through the feeding door and the discharging door respectively and then are fixed to the drying oven support, the multiple conveying rollers are installed in the conveying frame in parallel, and the paper tube conveying belt is fixed to the drying oven support. The paper tube conveying belt is arranged on the conveying roller in a sleeving mode, and paper tube placing positions are evenly arranged on the paper tube conveying belt. By means of the mode, assembly line type baking can be achieved, combination with a robot is facilitated, and automation of the baking procedure is achieved.

A treatment device for a liquid may include an air compressor configured to generate compressed air and an air dryer coupled downstream from the air compressor. The treatment device may also include an oxygen concentrator coupled downstream from the air dryer and configured to separate nitrogen and oxygen from the compressed dry air and output the nitrogen to the air dryer. The treatment device may also include an oxygen nanobubble generator coupled downstream from the oxygen concentrator and configured to generate oxygen nanobubbles within the liquid.

A surface water treatment system may include a surface water source and an oxygen nanobubble device. The oxygen nanobubble device may include an air compressor configured to generate compressed air, an air dryer coupled downstream from the air compressor, and an oxygen concentrator coupled downstream from the air dryer. The oxygen nanobubble device may also include a recirculating surface water pump coupled to the surface water source. The oxygen nanobubble device may also include an oxygen nanobubble generator coupled downstream from the recirculating surface water pump and coupled to the oxygen concentrator to generate oxygen nanobubbles within the surface water.

The utility model discloses an adjustable air conditioning tank test system, which comprises an air compressor, an adjusting tank, an air inlet pipeline, an exhaust pipeline and a control center, an air dryer is arranged between the dust removal filter and the oil removal filter; the exhaust pipeline is provided with an exhaust flow meter and an exhaust electric control valve; a pressure sensor is arranged in the adjusting tank; the adjusting tank comprises a tank main body, a tank shell cover, a tank bracket, a tank observation window and a tank observation cover; the tank observation cover is detachably installed on the tank observation window and is provided with a transparent observation window. According to the utility model, the air inlet electric control valve and the exhaust electric control valve are matched with a plurality of filtering, drying and detection sensing devices, so that a high-pressure, dry, dust-free and oil-free simulation environment conforming to high-precision parts such as an aircraft valve can be formed, a product can be conveniently placed for testing, and internal environment parameters of the adjusting tank can be displayed and adjusted in real time.

The invention discloses a compressed air centralized supply system based on double-layer LSTM and a control method thereof, and relates to the technical field of energy comprehensive utilization and industrial gas supply, the compressed air centralized supply system comprises a three-way valve, an air exhaust control valve, an air dryer, an air storage chamber, an air supply control valve and a pressure control valve; the method comprises the following steps: collecting related data in an operation process of a gas turbine generator set, and preprocessing the data; constructing a prediction model by adopting a double-layer LSTM algorithm to predict the gas consumption demand and the power grid load, and dynamically adjusting the gas suction rate, the pressure and the gas storage strategy; and by learning and updating the prediction model, performing safety control by adopting redundancy design and a fault detection isolation algorithm, and realizing control on the compressed air centralized supply system. The potential of the air compressor during variable working conditions of the gas turbine generator set is fully developed, compressed air storage and centralized supply are achieved, the air compressor does not need to be driven by electricity after power generation, the primary energy utilization rate is increased, and more environmental protection and energy saving are achieved.

The invention provides a test device for simulating volcanic ash erosion sample materials at normal temperature. The test device comprises a gas supply system, a dust supply system, a gas-solid mixing system and an erosion test system, the gas supply system comprises an air compressor, a high-pressure gas storage tank and an air dryer which are connected in sequence, and an outlet of the air dryer is connected with the gas-solid mixing system; the dust supply system comprises a solid particle storage tank, the upper end of the solid particle storage tank is provided with a feed port, and a lower end outlet is connected with the gas-solid mixing system; the washout test system comprises a test chamber, a fixed disc which is arranged at an inlet of the test chamber and is communicated with the gas-solid mixing system, a nozzle on the fixed disc, and a sample disc which is positioned in the test chamber and is opposite to the fixed disc, and the nozzle is used for uniformly spraying solid particles onto a sample material on the sample disc. The test device can accurately simulate the erosive wear condition of the air compressor blade by the volcanic ash with different concentrations and speeds at normal temperature, and can also simulate the erosive damage condition of the air compressor blade and a thin-wall piece sample by the volcanic ash at a high rotating speed.

The air compressor comprises a driving mechanism, a piston type compressor body, a displacement type compressor body, a first air channel assembly, a second air channel assembly, a first electromagnetic valve and a second electromagnetic valve, wherein the piston type compressor body and the displacement type compressor body are arranged at the two ends of the driving mechanism respectively. The second air channel assembly comprises a fifth air outlet channel, a sixth air outlet channel, a seventh air outlet channel and an eighth air outlet channel, the first electromagnetic valve controls opening and closing of the sixth air outlet channel, and the second electromagnetic valve controls opening and closing of the seventh air outlet channel and the eighth air outlet channel; and when the first electromagnetic valve is opened and the second electromagnetic valve is closed, the air compressor is in a parallel connection mode, and compressed air of the positive displacement compressor body and the piston type compressor body is directly and independently output to the air dryer. According to the air compressor, in the parallel connection mode, the gas output flow can be remarkably increased, the high-flow scene requirement can be met, mode switching is simplified through electromagnetic valve control, and the equipment flexibility is enhanced.

A control method is for a compressed air supply system with which a control device is associated. The method includes: receiving via the control device a supply demand, activating a compressed air generator to provide compressed air at a compressed air connection when the control device receives a supply demand, identifying a regeneration execution time depending on the supply demand and / or a degree of saturation of an air dryer, activating a switching valve to open a branch line when the control device identifies a regeneration execution time, and returning compressed air from the branch line counter to a filling direction through a pneumatic main line to regenerate the air dryer. A control device is for carrying out the method. A vehicle includes such a control device.

The utility model discloses an air-cooled energy storage battery cabinet, which relates to the technical field of battery cabinets, and is characterized by comprising a cabinet body and four supporting legs fixedly arranged on the bottom surface of the cabinet body, a ventilation mechanism is arranged in the cabinet body, and a drying mechanism is arranged behind the cabinet body; the technical effects are that wet air can be dried by arranging the drying mechanism, so that the interior of the cabinet body is not moist after the wet air enters the cabinet body, the battery pack is not in a moist environment, the fault rate of the battery pack is reduced, and the service life of the battery pack is prolonged. When air is dried, humid air can be compressed and dried in a freezing mode through the air dryer, the dried air can pass through a drying agent, and therefore secondary drying can be conducted on the air, water in the air is less, the efficiency of the air entering the air suction box can be higher by controlling the impeller to rotate, and the drying effect is better. Therefore, the ventilation effect of the interior of the cabinet body is better.

The invention relates to the technical field of air dryers, and discloses an air dryer which comprises a dryer body, a mounting mechanism and a damping mechanism are arranged below the dryer body, and the damping mechanism is located below the mounting mechanism; the mounting mechanism comprises a mounting assembly and a supporting assembly; the supporting assembly is located on the surface of the mounting assembly. The damping mechanism comprises a damping assembly and a connecting assembly; the damping assembly is located on the surface of the connecting assembly, the mounting assembly comprises a mounting frame, the dryer is placed on the top face of the mounting frame, and a motor is fixedly connected to the bottom face of the mounting frame. Through the mounting mechanism and the mounting assembly, a toothed plate is used for driving a supporting column to move, so that a clamping plate drives a protection plate to clamp and fix a dryer on a mounting frame, the dryer is conveniently mounted and dismounted, the mounting steps are reduced, and the supporting assembly uses a supporting plate to support the toothed plate; and meanwhile, the moving stability of the toothed plate is improved through a connecting plate and a wedge-shaped plate, and the mounting effect of the air dryer is improved.

The utility model belongs to the technical field of compressed air supply, and particularly relates to an instrument purification compressed air supply system, which comprises a normal supply unit and an emergency supply unit, and is characterized in that the emergency supply unit comprises a screw air compressor, a high-efficiency degreaser, a micro-heat regeneration air dryer and a second dust fine filter which are connected in sequence; an outlet of the second dust fine filter is communicated with an outlet of the first dust fine filter, and emergency supply for the purified compressed air storage tank for the instrument is completed; a first bleeder and a second control valve are arranged on a pipeline between the screw air compressor and the efficient degreaser, and a first control valve is arranged on the first bleeder; a second diffusing pipe is arranged on a pipeline between the micro-heat regeneration air dryer and the second dust fine filter, a third control valve is arranged on the second diffusing pipe, and a fourth control valve is arranged on an outlet pipeline of the second dust fine filter. Compared with the prior art, the device has the advantages that the device can quickly respond to guarantee the supply of the purified compressed air of the instrument.

A pneumatic system has a compressed air supply and an air spring arrangement which is pneumatically connected to the compressed air supply. The pneumatic system is for a vehicle and further has a controller for controlling the compressed air supply and the air spring arrangement. In the method for operating the pneumatic system, the air dryer and / or the air distributor module represents an overpressure volume. The overpressure volume initially has a pressure greater than a pressure in a remaining portion of the compressed air supply having at least one first air spring and an intermediate store. Compressed air is discharged from the overpressure volume into the compensation volume, accompanied by a reduction in pressure in the overpressure volume, namely, a reduction in the pressure in the air dryer. Compressed air is discharged into the first air spring of the air spring arrangement and into the intermediate store.

An oxygen nanobubble system may include a liquid source for liquid to be treated with oxygen nanobubbles. The system may also include a field portable oxygen nanobubble device including a portable housing, an air compressor carried by the portable housing and configured to generate compressed air, an air dryer carried by the portable housing and coupled downstream from the air compressor, an oxygen concentrator carried by the portable housing and coupled downstream from the air dryer, and a liquid pump carried by the portable housing and configured to pump liquid from the liquid source. The field portable oxygen nanobubble device may also include an oxygen nanobubble generator carried by the portable housing and coupled downstream from the liquid pump and to the oxygen concentrator to generate oxygen nanobubbles within the liquid.

The utility model discloses an ore grading sorting device, and relates to the technical field of ore extraction, the ore grading sorting device comprises a box body, a feeding assembly for conveying ore to the box body and a screen frame, an air drying device is arranged on the outer wall of the top end of the box body, a shaking device is arranged on the box body, and the shaking device is used for shaking the screen frame to screen the ore. The shaking device comprises a sliding rod clamped in the box body in a sliding mode, the bottom of the sliding rod is arranged on a supporting block in a sleeving mode, a spring used for pushing the sliding rod to move away from one side of the supporting block is arranged at the top of the supporting block, a round head is arranged at the top of the sliding rod, and a cam used for pushing the round head to move downwards is rotationally arranged at the position, above the round head, of the box body. And the air drying device is used for blow-drying moisture on the surface of the ore, the air drying device comprises a support arranged on the outer wall of the box body, so that the ore can be subjected to hot air drying, meanwhile, the angle of an air dryer can be adjusted, the ore can be conveniently shaken and screened, and meanwhile, the filtered ore on the screen frame can be conveniently poured.

The invention relates to the technical field of cleaning machines, in particular to a PCB after-copper-deposition cleaning machine which comprises a pickling machine, a clear water flushing machine is arranged on the left side of the pickling machine, a cold air drying machine is arranged on the left side of the clear water flushing machine, a hot air drying machine is arranged on the left side of the cold air drying machine, and a turnover box is arranged on the left side of the hot air drying machine. A conveying mechanism used for conveying PCBs is jointly arranged in the pickling machine, the clean water flushing machine, the cold air drying machine and the hot air drying machine, and the PCBs are conveyed and cleaned from right to left. Through cooperative use of the driving assembly, the reciprocating assembly and the rotating assembly, rotation of the rotating nozzles is synchronously achieved while the rotating nozzles are driven to do linear reciprocating motion; by means of the technical scheme, reciprocating linear spraying and rotary spraying are achieved, the washing coverage area is increased, compared with fixed spray head washing, dynamic washing reduces cleaning blind areas, shearing force to stains is increased through a complex water flow mode generated by rotation and reciprocating actions, pollutants can be stripped and taken away easily, and the cleaning effect is good.

The invention discloses a built-in heating type air dryer which comprises a heat preservation shell, the heat preservation shell is filled with a drying agent, an air inlet and an air outlet are formed in the heat preservation shell, and a heating part wrapping the drying agent is installed in the heat preservation shell. The heating component comprises a heat conduction sleeve and a heating element arranged on the outer side of the heat conduction sleeve, a conductive bayonet socket is arranged on the outer side of the heat preservation shell, the interior of the conductive bayonet socket is electrically connected with the heating element, and the drying agent is completely wrapped by the heat conduction sleeve and the heating element to form an annular heating surface. Heat can be evenly transmitted to all parts of the drying agent through the heat conduction sleeve, local overheating or heating blind areas are avoided, the contact area of the drying agent and the heating face is maximized through wrapping type heating, the saturation risk is reduced, and the service life of the dryer is prolonged.

The invention relates to the technical field of high-strength natural color cloth, in particular to a production and preparation process of high-strength natural color cloth, which comprises the following steps: S1, raw material selection: selecting high-strength polyester fibers, aramid fibers and ultra-high molecular weight polyethylene fibers as fiber materials, and selecting a proper amount of antioxidant, anti-ultraviolet agent and nano reinforcing agent as additives; s2, fiber treatment: pretreatment: soaking fibers in warm water at 60 DEG C for 2 hours, removing impurities, and drying: drying in a hot air dryer at 80 DEG C for 4 hours; s3, fiber mixing: mixing the pretreated fibers according to a weight ratio, adding a proper amount of an additive, and uniformly stirring in a mixer for 30 minutes at a rotating speed of 300 rpm. The tensile strength and wear resistance of the fabric are improved through fiber mixing and spinning process optimization, the color uniformity and durability of the fabric are ensured by adopting an environment-friendly dyeing technology, and environmental pollution in the production process is reduced by selecting environment-friendly materials and processes.

A twin chamber air dryer for a pneumatic system of a commercial vehicle comprises: a supply inlet port, a supply outlet, a compressor control outlet, and an exhaust outlet; a first desiccant cartridge and a second desiccant cartridge, to be operated alternately; a toggling valve assembly for switching between the first and second desiccant cartridges; a pneumatically controlled purge valve switchable between a blocking basic position and an activated position; and a solenoid valve assembly. The solenoid valve assembly comprises a directional control solenoid valve for receiving an electrical direction control signal and controlling the toggling valve assembly, a regeneration solenoid valve for receiving an electrical regeneration control signal and providing pressurized air in regeneration phases of the desiccant cartridge, and a governor solenoid valve for receiving an electrical governor control signal and controlling the purge valve and a compressor mode.

The invention discloses a method for drying amomum tsao-ko by using a box type hot air dryer, and relates to the technical field of food processing. The drying method specifically comprises the following steps: (1) performing fixation: performing fixation on fresh amomum tsao-ko with water vapor to obtain to-be-dried amomum tsao-ko; (2) drying: conveying the to-be-dried amomum tsao-ko obtained in the step (1) into a box type hot air dryer, and performing staged gradient drying to obtain dried amomum tsao-ko with the water content of 12-13%; and (3) cooling the dried amomum tsao-ko obtained in the step (2), and packaging and storing the amomum tsao-ko. By adopting the technical scheme to dry the amomum tsao-ko, the method has the characteristics of economy, high efficiency, environmental protection and quality improvement, and has the advantages that the drying time can be obviously shortened, the processing cost can be reduced, the product quality can be improved, and the loss of internal nutritional ingredients can be avoided.

An irrigation system may include an irrigation water source for an agricultural area and an oxygen nanobubble device. The oxygen nanobubble device may include an air compressor configured to generate compressed air, an air dryer coupled downstream from the air compressor, and an oxygen concentrator coupled downstream from the air dryer. The oxygen concentrator may also include an irrigation water source pump coupled to the irrigation water source, and an oxygen nanobubble generator coupled downstream from the irrigation water source pump and coupled to the oxygen concentrator to generate oxygen nanobubbles within the irrigation water.

The invention discloses a method for reducing biogenic amine in an air-dried goose product by combining a pulsed electric field with inoculation fermentation, which is characterized by comprising the following steps: treating fresh goose meat at 0.5-1kv / cm for 50-180s, pickling the goose meat in a 8wt% sodium chloride solution for 24h, hanging the pickled goose meat in an air dryer for 1h, draining off water, and drying the goose meat in the air dryer to obtain dried goose meat; the method comprises the following steps: uniformly spraying a compound bacterial solution consisting of lactobacillus plantarum pdd-1 and lactococcus lactis according to the inoculation amount of 1 * 10 < 5 >-1 * 10 < 7 > CFU / mL, and air-drying for 3-5 days at 10-20 DEG C to obtain the air-dried goose product with low biogenic amine, which has the advantages of obviously reducing the content and variety of biogenic amine, inhibiting the degradation of protein in the air-dried goose and obviously increasing flavor substances.

The utility model belongs to the technical field of compressed air preparation, and particularly relates to a compressed air supply system, which is characterized by comprising a screw air compressor, an efficient degreaser, a refrigerated dryer, a micro-heat regeneration air dryer and a fine dust filter, an outlet of the screw air compressor is connected with a compressed air tank for desulfurization and production, an outlet of the freezing dryer is respectively connected with a micro-heat regeneration air dryer and a compressed air tank for dust removal, and an outlet of the micro-heat regeneration air dryer is sequentially connected with a fine dust filter and a purified compressed air tank for an instrument. Compared with the prior art, the system has the beneficial effects that corresponding process routes are formulated according to the quality requirements of different types of compressed air, energy is utilized in a gradient manner, and good economic benefits and social benefits are created.

The utility model relates to the technical field of air pressing equipment, in particular to air pressing equipment integrating an air dryer and an air compressor into a skid, which comprises a skid seat, an air compressor, a refrigeration type compressed air dryer, a compressed air filter, an air-water separator group and a double compressed air filter group. The utility model focuses on the innovation of the air pressing equipment, and provides the air pressing equipment which integrates the air dryer and the air compressor into the skid for solving the problems of dispersion, low efficiency, poor precision and the like of the traditional air dryer and the traditional pressing equipment. The air compressor supplies air, the refrigeration type compressed air dryer dehumidifies and then is precisely regulated and controlled through the PLC in combination with the high-precision pressure controller, and the device has the outstanding advantages of integration, high efficiency, precise pressure control, safety, reliability, wide application and the like, and can be widely applied to air pressure testing requirements of industries such as petrochemical engineering, natural gas, pressure pipelines and pressure containers.