A high-strength wear-resistant compression-resistant high-frequency straight seam welded steel pipe

Abstract

A high-strength wear-resistant and compression-resistant high-frequency straight seam welded steel pipe belongs to the technical field of steel pipes. In order to solve the problem of poor pressure resistance caused by the fragility of the weld seam of the existing single-layer welded steel pipe, the weld seam of the welded steel pipe is easily caused by extrusion. Welding fractures, causing accidents caused by the leakage of the transported material inside the welded steel pipe from the weld; and the existing single-layer welded steel pipe is damaged by the water hammer effect of the conveying fluid during long-term use, which affects the service life of the welded steel pipe; The invention uses the limiting groove at the end of the main body to clamp the protruding clamping plate, and with the help of a metal clamping strip, goes around the connecting hole and reversely welds it in the positioning clamping groove. Sleeve, opening spacer cooperates with resin sealing plate and sealing arc-shaped plate to protect the welding line of the main body, and an impacted plate with water hammer effect is set on the inner wall of the main body to eliminate the fluid water hammer; the invention has good safety in use , which is beneficial to eliminate the water hammer effect of the pipeline.

Description

technical field [0001] The invention relates to the technical field of steel pipes, in particular to a high-strength, wear-resistant, compression-resistant, high-frequency straight seam welded steel pipe. Background technique [0002] Welded steel pipe refers to a steel pipe with seams on the surface that is welded by bending and deforming a steel strip or steel plate into a circular, square or other shape. Welded steel pipes have simple production process, high production efficiency, many varieties and specifications, and less equipment investment, but the general strength is lower than that of seamless steel pipes. It is widely used in the fields of oil, natural gas, petrochemical, mining, electric power, infrastructure engineering, steel structure and water supply on land and seabed. [0003] However, most of the existing welded steel pipes have a single-layer structure, and the welding seam is relatively fragile, resulting in poor compressive resistance. When the welded...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a high-strength, wear-resistant, compression-resistant, high-frequency straight seam welded steel pipe, aiming to solve the above-mentioned background technology. When the welded steel pipe is laid and used in the transportation project, the welded seam of the welded steel pipe is easily cracked after being squeezed, resulting in the leakage of the material transported inside the welded steel pipe from the weld seam and causing accidents, and the existing single-layer The welded steel pipe is damaged by the water hammer effect of the conveying fluid during long-term use, which affects the service life of the welded steel pipe

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