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375results about "Treads" patented technology
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Luxury vinyl plank stair noses and other moldings
A molding is made from a first flooring plank. A first groove is formed into the first flooring plank with a first flat bottom surface. A second groove is formed into the first flooring plank with a second flat bottom surface. The first flooring plank is folded at the first groove and second groove. A second flooring plank is disposed adjacent to the molding. A color and pattern of the first flooring plank and second flooring plank match.
Owner:FINISHED EDGE TECHNOLOGY LLC
Flooring system and method for manufacturing the same
A flooring panel comprising a first end, a second end opposite the first end, and an axis extending between the first end and the second end. A tread portion extends between the first and second ends, the tread portion configured to be coupled to a tread of a stair. A curved cap is integrally formed with the tread portion and extends between the first end and the second end, the curved cap configured to be coupled to an edge of the stair. A plurality of grooves is formed in an inner surface of the curved cap, the plurality of grooves extending parallel to the axis of the tread portion, the plurality of grooves extending along a majority of inner surface of the curved cap. A cover member is adhesively coupled to the inner surface and covering the plurality of grooves.
Owner:VERSATRIM LLC
Fabricated stair structure device
The utility model relates to the field of assembly type stairs, and discloses an assembly type stair structure device. The device comprises a base, a first supporting column, a handrail reinforcing rod, a rotating platform and a second supporting column, the lower end of the second supporting column is fixedly connected with the upper end of the base, and the rear side of the lower end of the rotating platform is fixedly connected with the upper end of the first supporting column; a movable pedal mechanism is arranged at the lower end of the handrail reinforcing rod; a pedal is arranged at the upper end of the movable pedal mechanism; the stair is moved through the lifting wheels, the universal wheels are driven to move upwards through the hydraulic rods after movement is completed, the stair is placed and supported through the base, the position of the limiting sliding block is adjusted through sliding of the limiting sliding block and the limiting rods, the limiting sliding block is fixed through the limiting threaded nails after adjustment, and therefore the pedals are adjusted; after adjustment, the baffles of different sizes are installed according to the height between the pedals, during installation, fixing is conducted through connection of threaded nails, threaded holes and second threaded holes, and therefore gaps between the pedals are protected.
Owner:YUNNAN JIUTAI CONSTR TECH CO LTD
Outdoor step lamp
Disclosed in the present disclosure is an outdoor step lamp. The outdoor step lamp includes a housing, where an opening is formed at a lower end of the housing, and a cover plate is arranged at the opening of the lower end of the housing. A lamp panel is arranged in the housing, and a control chip and lamp beads that are electrically connected are arranged on the lamp pane. According to the present disclosure, light emitted from the lamp beads is transmitted out through a circular arch top wall, and the light forms a long strip shape that is mapped on a step surface. When the step lamp provided by the present disclosure is mounted on the step, occupied space in a lengthwise direction of a step is small, and impact on walking of people on the step is also minor.
Owner:ZHOU XINSHENG
Construction method of stair structure
The invention belongs to the technical field of building construction, and discloses a construction method of a stair structure, and the stair structure comprises a first platform, a second platform and a plurality of step beams. Firstly, a first platform, a second platform and a plurality of step beams are prefabricated, a foundation layer is constructed at the same time, a step-shaped slope is arranged on the surface of the foundation layer, then the first platform, the second platform and the step beams are installed on the step-shaped slope, constructions are constructed on the two sides of the step beams, and embedded pipe sets are arranged on the constructions according to the designed elevation of the step beams; and then the step beam and the building are connected, after the foundation layer is settled, grouting is conducted between the step beam and the step-shaped slope through the first embedded pipe, and after grouting is completed, the first embedded pipe and the second embedded pipe are blocked. According to the construction method of the stair structure, the construction efficiency can be improved, the bottom of the stair can be prevented from being separated from a backfill soil layer, and the bearing capacity and structural stability of the stair are guaranteed.
Owner:BEIJING TIANRUN CONSTR +1
Stair nosing
An injection molded stair nosing has a tread member, a front portion of which is downwardly and backwardly canted from the horizontal by about 5 to about 7 degrees. The front portion is supported by a plurality of spaced apart support ribs underneath the front portion. Each support rib may have a front concave surface to fit to a curved transition of a stair tread to a stair riser or nose. A back portion of the tread member is tapered to mitigate any interference with the foot or shoe of a user.
Owner:MACNEIL IP LLC
Fabricated anti-seismic stair
The invention relates to an assembly type anti-seismic stair, and relates to the technical field of anti-seismic stairs, the assembly type anti-seismic stair comprises a wall body, connecting blocks are fixedly connected to the two sides of the upper portion of the wall body, grooves which are evenly distributed are formed in the sides, close to each other, of the connecting blocks, connecting rods are fixedly connected to the interiors of the grooves, and the connecting rods are sleeved with first springs; connecting plates are fixedly connected to the sides, close to each other, of the connecting rods, the connecting plates are slidably connected to the interiors of the connecting grooves, second springs are fixedly connected to the sides, away from each other, of the connecting plates, the second springs are fixedly connected to the interiors of the connecting grooves, and the connecting grooves are formed in the sides, away from each other, of the connecting columns; and the connecting columns are connected into the grooves in a sliding manner. The stair has the effect of effectively resisting earthquake force, damage and casualties during an earthquake are reduced, the overall anti-seismic capacity is improved, the stair body can be conveniently disassembled and assembled, and the construction period is greatly shortened.
Owner:JIANGSU KAIXIANG CONSTR GRP CO LTD
Energy-saving and environment-friendly concrete prefabricated component
ActiveCN117005631BTreadsFatty/oily/floating substances removal devicesArchitectural engineeringWater resources
This invention relates to the field of precast concrete components, specifically disclosing an energy-saving and environmentally friendly precast concrete component, including a precast staircase assembly. The precast staircase assembly consists of multiple steps, each step having multiple drainage holes at its top and a water collection trough inside each step. A guide plate is connected inside the water collection trough. It also includes two guard plates, which are fixedly installed on both sides of the precast staircase assembly. One of the guard plates has a sloping groove inside, and a drainage component is fixedly installed inside the sloping groove. This invention can drain rainwater from the steps during rainy days, preventing rainwater or other liquids from accumulating on the steps, thereby reducing the risk of slipping and falling for workers. It also prevents the steps from being soaked in water, extending the service life of the precast concrete staircase. Furthermore, it filters and stores rainwater for subsequent use, saving water resources and improving the environmental friendliness of the equipment.
Owner:ZHENJIANG TUOTIAN ENERGY SAVING TECH CO LTD
Concrete stair construction method
The invention relates to a concrete stair construction method which comprises the following steps that the construction position of a building section side plate is determined in a construction area, reinforcing steel bars are bound in the construction position of the building section side plate to form reinforcing steel bar frames, the number of the reinforcing steel bar frames is two, and the two reinforcing steel bar frames are oppositely arranged; determining the position of a stair flight plate on the steel bar frame, and fixing a threaded sleeve on the steel bar frame; a side plate pouring formwork is provided, the side plate pouring formwork is arranged at the construction position of the building section side plate, and an open hole is formed in the position, corresponding to the threaded sleeve, of the side plate pouring formwork; connecting ribs are provided, and the connecting ribs are inserted into the threaded sleeves of the two steel bar frames which are oppositely arranged; concrete is poured into the side plate pouring formwork, and the side plate pouring formwork is dismantled after the concrete reaches the dismantling strength; and providing a stair plate pouring template, arranging the stair plate pouring template on the outer side of the connecting rib, and pouring concrete in the stair plate pouring template to form a stair structure.
Owner:CHINA CONSTR EIGHT ENG DIV CORP LTD
Soft and hard combined stair anti-slip strip
The utility model relates to the technical field of stair anti-slip strips, and discloses a soft and hard combined stair anti-slip strip which comprises a plastic strip and steel plate assemblies arranged at the bottom of the plastic strip in a scattered mode. The plastic strip comprises a short strip and a long strip, the short strip and the long strip are connected to form an L shape, and an anti-collision shaft is arranged at the joint of the short strip and the long strip; a blocking shaft is arranged on the side, close to the anti-collision shaft, of the long strip, a compression shaft is arranged on the side, away from the anti-collision shaft, of the long strip, and a V-shaped groove is formed in the connecting middle of the blocking shaft and the compression shaft. Due to the design of the blocking shaft and the compression shaft, especially the anti-skid shaft arranged on the compression shaft and the V-shaped groove in the long strip, the situation that the person slips down due to the unstable gravity center when going downstairs can be effectively prevented, and the anti-skid effect is further improved.
Owner:SHANGHAI PAILE ENVIRONMENTAL PROTECTION TECH CO LTD
Convenient and fast building stair building structure
Owner:YONGCHANG ARCHITECTURAL DESIGN INST
Platform system
A platform system comprising a platform structure having at least one modular platform unit with platform connection features on a side surface thereof to which other components can be connected, the other components including at least two of the following: another modular platform unit, a stair unit, a tower unit, a handrail unit, and a ladder unit. A stair assembly is connected to the platform structure via said connection features, the stair assembly comprising a plurality of stair units connected together to provide a number of steps equal to the sum of steps of the stair units.
Owner:SAFE RACK LLC
Stair prefabricated part
Owner:WEIHAI YUQUAN NEW BUILDING MATERIAL
Luxury vinyl plank stair noses and other moldings
A molding is made from a first flooring plank. A first groove is formed into the first flooring plank with a first flat bottom surface. A second groove is formed into the first flooring plank with a second flat bottom surface. The first flooring plank is folded at the first groove and second groove. A second flooring plank is disposed adjacent to the molding. A color and pattern of the first flooring plank and second flooring plank match.
Owner:FINISHED EDGE TECHNOLOGY LLC
Anti-blocking drainage building water supply and drainage pipeline convenient to install
The utility model discloses an anti-blocking drainage building water supply and drainage pipeline convenient to install, and relates to the technical field of building drainage, the anti-blocking drainage building water supply and drainage pipeline convenient to install comprises a middle ramp, diversion trenches are formed in the surface of the middle ramp at equal intervals, and stair treads are fixedly installed on the two sides of the middle ramp. And drainage grooves are formed in the sides, close to the middle ramp, of the stair treads, floor platforms are fixedly connected to the bottom ends of the middle ramp and the stair treads, and drainage grooves are formed in the surfaces of the floor platforms. According to the anti-blocking drainage building water supply and drainage pipeline convenient to install, rainwater on the surface of the middle ramp can be guided into the drainage grooves in the stair treads on the two sides through the flow guide grooves, and the drainage grooves in the stair treads can thoroughly guide the rainwater into the drainage grooves; further, the drainage groove can intensively discharge the collected rainwater into the drainage groove, the rainwater can be discharged through the drainage vertical pipe, and the arrangement of the filter plate can prevent impurities from entering the drainage vertical pipe to cause blockage.
Owner:ZHUHAI HUAFA REAL ESTATE DEV CO LTD
An ecological homestay of recycling waste storage tank
The utility model discloses an ecological homestay of waste storage tank recycling, which comprises a horizontal base plate I, a contact surface formed on the bottom surface of the horizontal base plate I for contacting with the water bottom, a waste storage tank with the top part exposed above the water surface, the bottom outer circumferential surface of the waste storage tank fixed on the top surface of the horizontal base plate I, a waste container fixed on the top part of the waste storage tank, a horizontal base plate II horizontally fixed on the top part of the waste container, a top surface of the horizontal base plate II forming a crop planting space, a personnel passing opening formed between the horizontal base plate II and the waste container, a staircase installed between the personnel passing opening and the bottom inner wall of the waste container, and personnel in the personnel activity space reaching the crop planting space through the staircase. The waste storage tank, the waste container and the staircase of the ecological homestay are all made of waste industrial articles for recycling, which turns waste into treasure. The recycling economy and the environmental protection concept reduce the consumption of new materials and the construction cost.
Owner:LIANYUNGANG DONGLIANG INT FREIGHT FORWARDING CO LTD
Sandwich waterproof thermal insulation structure for outdoor stair
ActiveCN224300292UEnsure smooth layingImprove stabilityTreadsBuild-up roofsInsulation layerThermal insulation
The utility model provides a kind of sandwich waterproof thermal insulation structure of outdoor stair, not only ensure the continuity of outdoor stair insulation layer and waterproof layer laying, effectively protect the working performance of structure layer, also improve construction efficiency, avoid the construction cycle extension problem possibly caused by complex due to height difference change. The leveling layer is fixed on the upper surface of roof panel, and the stair surface layer plate is fixed on the upper surface of stair tread plate;The waterproof layer and the insulation layer are arranged between the leveling layer and the stair tread plate, the waterproof layer is fixed on the upper surface of the leveling layer, the insulation layer is fixed on the upper surface of the waterproof layer, and the stair tread plate is fixed on the upper surface of the insulation layer;It further includes vertical planting, vertical planting is sequentially implanted roof panel, leveling layer, waterproof layer, insulation layer and stair tread plate;Longitudinal reinforcement is embedded in the insulation layer, and the longitudinal reinforcement is fixed with the vertical planting in the insulation layer;Bidirectional steel mesh is embedded in the stair tread plate, and the bidirectional steel mesh is fixed with the vertical planting in the stair tread plate.
Owner:CHINA UNITED ENG
Splicing and assembling type safe anti-skid elastic material integral stair step
The invention discloses a safe anti-skid elastic material integral stair step capable of being spliced and assembled, and belongs to the technical field of building decoration materials. The anti-slip structure comprises a front end corner part, a plane part, an anti-slip part and an assembling part, the front end corner part and the plane part are spliced through a clamping structure of a tenon and a mortise, the assembling part comprises an assembling groove and a buckling groove in the plane part, and the anti-slip part is assembled in the assembling groove. The product can be formed by combining various materials such as PVC (polyvinyl chloride) and rubber, the color, the size and the pattern can be customized, and the product can be packaged, transported, constructed and locally replaced in a split manner. The working principle comprises splicing fixation, non-slip assembly, material collaboration, splitting replacement and the like, and the stable, non-slip and convenient use effects are achieved through multi-structure cooperation. The problems that an existing product is single in material, cannot be split and is poor in anti-skid and anti-fouling performance are solved, secondary utilization of tailings is achieved, the production and use cost is reduced, the product practicability and environmental protection performance are improved, and the method is suitable for various building stair scenes.
Owner:SHANDONG SHANGNUO PLASTIC FLOOR CO LTD
Steps for a spa
Owner:BULLFROG INT L C
Prefabricated stair convenient to install
The utility model discloses a prefabricated stairway convenient to install, which comprises a prefabricated stairway main body, an installation structure is arranged in the prefabricated stairway main body, the installation structure comprises an installation groove, a connecting floor slab and a fixing groove, the installation groove is horizontally arranged on one side of the top of the prefabricated stairway main body, and the connecting floor slab is arranged in the installation groove. The fixing grooves are formed in the upper surfaces of the bottoms of the prefabricated stair bodies, one ends of the connecting floor slabs are inserted into the mounting grooves, the other ends of the connecting floor slabs are clamped into the fixing grooves and flush with the tops of the prefabricated stair bodies, the two prefabricated stair bodies are connected through the two ends of the connecting floor slabs correspondingly, and the floor slabs are inserted into the mounting grooves and clamped into the fixing grooves. And a complete stair is formed to connect two layers.
Owner:KEYI COLLEGE OF ZHEJIANG SCI TECH UNIV
Wall-in type stair step skirting board structure of staircase
The utility model discloses a wall-in type stair step skirting board structure of a staircase, which belongs to the technical field of building construction and comprises an interface waterproof layer, a leveling combination layer and a triangular integrated board which are arranged inside a stair wall side. And one side of the triangular integrated plate is a straight long edge, and the other side of the triangular integrated plate is a sawtooth edge structure provided with a plurality of regular triangular notches. The staircase wall-in type stair step skirting board structure is suitable for staircase skirting line construction engineering, and particularly suitable for staircase areas such as industrial factory buildings which are high in use frequency. According to the structure, the staircase ground engineering quality is guaranteed, later maintenance and rectification are reduced, the quality is good, construction is convenient, the labor cost is greatly saved, the construction efficiency is improved, and the impression is good.
Owner:CETC CONSTR DEV CO LTD
Fabricated stair structure
The utility model discloses an assembly type stair structure which comprises a hand guard bar, a plurality of pedals and a plurality of wall face installation assemblies, the number of the wall face installation assemblies is the same as that of the pedals, the pedals are located between the wall face installation assemblies and the hand guard bar, and a first inserting groove and a second inserting groove are formed in the two ends of each pedal respectively. A connecting assembly used for being connected with a wall face installation assembly is arranged at the bottom of the first inserting groove. According to the utility model, the hand-held guardrail, the plurality of pedals and the plurality of wall surface mounting assemblies are arranged, the wall surface mounting assemblies are fixed on the wall surface firstly, then the pedals are fixedly connected with the wall surface mounting assemblies through the connecting assemblies at the bottoms of the pedals, and then the hand-held guardrail is assembled and spliced with the other sides of the plurality of pedals; and finally, the bottom ends of the hand guardrails are fixed through bolts, assembling of the stair is completed, the mode of assembling the pedals on the stair is simpler and more convenient, and the construction efficiency can be improved.
Owner:WUXI XINGJI CREATIVE HOME TECHNOLOGY CO LTD
Sightseeing tower convenient to climb and used for photovoltaic station building
The utility model discloses a convenient-to-climb sightseeing tower for photovoltaic station building, and relates to the technical field of sightseeing towers, the convenient-to-climb sightseeing tower comprises a supporting rod, a climbing stair is installed on the outer side of the supporting rod, the climbing stair is installed on the outer side of the supporting rod in a winding mode, and a pedestrian separation assembly is installed in the climbing stair. The pedestrian separation assembly is used for separating ascending people from descending people, the pedestrian separation assembly comprises a separation plate, an upper channel, a lower channel, a first blocking assembly and a second blocking assembly, and the separation plate is installed in the middle of the climbing stair and divides the inner space of the climbing stair into the upper channel and the lower channel. The inner space of the climbing stair is divided into two parts by the partition plate in the pedestrian partition assembly, so that an ascending pedestrian climbs to the top through the upper channel, a descending pedestrian descends to the bottom from the interior of the sightseeing room through the lower channel, and the situation that the climbing stair is blocked due to the fact that the ascending pedestrian and the descending pedestrian meet is avoided.
Owner:ANHUI ZHONGZE NEW ENERGY CO LTD
A suspended steel structure staircase with protective structure
The present invention relates to the field of building construction technology, specifically to a suspended steel structure staircase with a protective structure, comprising a first fixed plate and a second fixed plate, a plurality of connecting plates fixed between the first fixed plate and the second fixed plate, surfaces of the first fixed plate and the second fixed plate are provided with a guardrail assembly, the bottom of the guardrail assembly is provided with a lifting traction member, one end of the first fixed plate and the second fixed plate are fixed with a support column, the surface of the support column is provided with a loudspeaker and a sensor, and a mounting fastener is provided between the loudspeaker and the support column; the beneficial effect is: the suspended steel structure staircase with a protective structure proposed by the present invention is equipped with a loudspeaker and a sensor to realize the height judgment of the person using the stairs, and when a short user is identified, the guardrail assembly is driven to be lowered by the lifting traction member to realize the change of the height of the guardrail assembly, so that the guardrail rod is suitable for users of different heights.
Owner:THE FIRST COMPARY OF CHINA EIGHTH ENG BUREAU LTD
A straight flat-layered entrance structure with an installed elevator
This utility model provides a direct-level entrance structure for adding an elevator, including an elevator shaft, a horizontal elevator corridor, and stairs. The elevator shaft contains a car, the stopping position of which is adapted to the floor height of each resident. The horizontal elevator corridor connects the car stopping point of the elevator shaft to the entrance platform of each resident. The stairs include half of the original concrete stairs, steel columns, inner connecting steel beams, outer connecting steel beams, and steel structure steps. The steel columns connect the horizontal elevator corridor and the end of the original concrete stairs and provide support for the original concrete stairs. The inner and outer connecting steel beams connect the end of the original concrete stairs to the car stopping point of the elevator shaft. The steel structure steps are located between the inner and outer connecting steel beams. The multi-level horizontal elevator corridor and stairs alternately form a Z-shaped structure. This utility model structure is easy to construct, does not affect elevator use during construction, and achieves a direct-level entrance effect upon completion.
Owner:GUANGXI PUSI ELECTROMECHANICAL TECH CO LTD
Tail end protection structure of steel structure walking stair
ActiveCN224161329USolve the problem of lack of protectionThe process of going up and downstairs is safe and convenientTreadsControl theorySupport point
The utility model discloses a tail end protection structure of a steel structure walking stair, and relates to the technical field of stairs. The device comprises a supporting frame, supporting plates are fixedly arranged on the two sides of the top of the supporting frame, the supporting plates are in a broken line shape, and the ends, away from the supporting frame, of the supporting plates make contact with the ground; the guardrail is fixedly arranged at the tops of the supporting plates, and the step plates are arranged between the supporting plates at equal intervals; the U-shaped extension arm is detachably arranged on the lower side of the guardrail, and the U-shaped extension arm is of a bent structure; and the connecting piece is arranged on the lower side of the guardrail. The U-shaped extension arm is arranged at the starting end of the walking stair, extra acting points and supporting points are provided for workers, the problem that the starting end of a traditional stair is lack of protection is effectively solved, the workers can complete material carrying and personnel flow tasks more efficiently due to the fact that the process of going upstairs and downstairs is safer and more convenient, and the working efficiency is improved. And the overall working efficiency is improved.
Owner:QINGHAI QING ALUMINUM GREEN WALK TECHNOLOGY CO LTD
Platform or stairs
A platform or staircase comprising a plurality of platform or staircase panels, characterized in that each panel comprises a composite material comprising: a plate-shaped main body made of natural stone with a thickness of 7 mm to 9 mm; a fabric arranged on the rear surface of the main body made of, in particular overlapping, glass fibers with a mass per unit area of approximately 500 g / m 2 , a casting of epoxy resin filling the pores of the fabric and adjacent spaces, whereby natural stone, fabric and epoxy resin form a closed layer composite, wherein the composite panel is bonded to the landing or staircase via its back by means of a two-component polyurethane adhesive which expands by at least 100% of its applied volume after application and contains a reaction retarder with a delay time of 0.5 min to 5 min.
Owner:INNOSTONE GMBH
Outdoor open staircase
The utility model provides an outdoor open staircase. The outdoor open staircase comprises an outdoor roof (3), light aggregate backfill steps (2), an outdoor platform (8) and an outdoor stair flight (1), the outdoor roof (3) and the outdoor platform (8) are subjected to interface separation by adopting the lightweight aggregate backfill step (2); and then the outdoor staircase section (1) is combined with the outdoor staircase section (1) to form an outdoor open staircase. By adopting the structure of backfilling the steps with the light aggregate, the problem that the elevations of the outdoor roof and the outdoor platform are different is solved, and the effect of connecting the outdoor roof and the outdoor platform in a height difference mode is achieved.
Owner:SHANGHAI LIANCHUANG DESIGN GRP CO LTD
Fabricated building component quick connecting structure
The utility model relates to the technical field of assembly type building structures, in particular to an assembly type building component quick connecting structure which comprises a fixing base, a fence, a mounting main rod, a threaded sleeve and a mounting component, the fence is fixedly connected with the upper surface of the fixing base, the mounting main rod is fixedly connected with the inner wall of the fixing base, and the threaded sleeve is in threaded connection with the mounting main rod. The mounting assembly is arranged on the surface of the mounting main rod and comprises a fixing plate, the fixing plate is slidably connected with the surface of the mounting main rod, a mounting groove is formed in the upper surface of the fixing plate, a pedal is slidably connected to the inner wall of the mounting groove, a fixing block is fixedly connected to the upper surface of the fixing plate, and a through groove is formed in the surface of the fixing block; insertion rods are slidably connected to the inner walls of the through grooves and slidably connected with the inner walls of the pedals. According to the stair dismounting device, the mounting assembly is arranged, so that the stair can be conveniently and rapidly dismounted, the construction efficiency is improved, materials can be repeatedly used, and the practicability of equipment is effectively improved.
Owner:刘明述
Tadder tread pedal structure convenient to lay
The utility model discloses a tread pedal structure convenient to lay, relates to the technical field of tread pedals, and adopts the technical scheme that the tread pedal structure comprises a quick release structure arranged on the surface of a stair, and the quick disassembly and assembly of a pedal and the stair are realized through components such as a mounting sleeve, an inserting cylinder, a limiting rod and a rotating rod. A limiting structure is arranged in the quick release structure to ensure stable installation of the pedal. And the mounting groove is formed in the pedal and can be inserted with the decorative plate and the plug plate, so that the pedal is beautified and is convenient to maintain. According to the scheme, the pedal mounting and dismounting process is simplified, the pedal does not need to be damaged or bottom materials do not need to be removed, construction efficiency and convenience are improved, and the method is suitable for decoration and transformation of various building stairs.
Owner:DANYANG JUYI NEW MATERIAL TECH CO LTD