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Introduction to the content of inspection standards for thick-walled straight seam steel pipes

Introduction to the content of inspection standards for thick-walled straight seam steel pipes

Keywords :Introduction to the content of inspection standards for thick-walled straight seam steel pipes        Update : 2022-07-18        View(s) : 777

The development of seamless steel pipes focuses on energy saving and emission reduction technology. Thick-walled straight seam steel pipes are to develop high-grade (X100) and large-wall thickness (≥60mm) products. The whole pipe is expanded in diameter, which is the best way to eliminate residu...

A detailed explanation of the production process of straight seam steel pipe

A detailed explanation of the production process of straight seam steel pipe

Keywords :A detailed explanation of the production process of straight seam steel pipe        Update : 2022-07-15        View(s) : 681

1) Work before molding The raw materials are strip coil, welding wire, and flux. They must undergo strict physical and chemical inspections before being put into use. The head and tail of the strip are butted by single wire or double wire submerged arc welding, and automatic submerged arc welding ...

Thick-walled steel pipe production steps

Thick-walled steel pipe production steps

Keywords :Thick-walled steel pipe production steps        Update : 2022-07-14        View(s) : 828

1. The stainless steel elbow is made of thick-walled steel pipe , and the wall thickness changes along the length of the pipe; 2. Process the section of the square tube, and change the circular section into a square, oval, and polygon; 3. For square pipes with crimping and bottom sealing, inc...

Thick-walled steel pipe

Thick-walled steel pipe

Keywords :Thick-walled steel pipe        Update : 2022-07-13        View(s) : 724

Thick-walled steel pipes refer to steel pipes whose outer diameter and wall thickness ratio is less than 20 than thick-walled steel pipes . Mainly used as petroleum geological drilling pipe, cracking pipe for the petrochemical industry, boiler pipe, bearing pipe, and high-precision structural p...

Straight seam steel pipe expansion technology

Straight seam steel pipe expansion technology

Keywords :Straight seam steel pipe expansion technology        Update : 2022-07-12        View(s) : 785

1. Preliminary rounding stage: the fan-shaped blocks are opened until all the fan-shaped blocks are in contact with the inner wall of the steel pipe. At this time, the radius of each point in the inner circular pipe of the steel pipe within the step range is almost the same, and the steel pipe is in...

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