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Threeway Steel Co., Ltd

E-mail: sales@srtsteelpipe.com

Address: 22nd Floor, Royal Wing Tower, Long Champ International Building, No.9 Xiangfu Road, Changsha, Hunan, China, PC: 410116

Phone:0086-731-8873-9521  

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The welding process of thick-walled steel pipe

The welding process of thick-walled steel pipe

Keywords :The welding process of thick-walled steel pipe        Update : 2022-03-24        View(s) : 901

Welding method: When welding thick-walled steel pipes , first clean the oil, paint, water, rust, etc. of the welding joints, and then open the grooves according to the wall thickness. It is the gap of the product, which is generally 1-1.5 times the diameter of the electrode or wire. If the groove...

What is the difference between the surface processing of spiral steel pipe and stainless steel pipe

What is the difference between the surface processing of spiral steel pipe and stainless steel pipe

Keywords :What is the difference between the surface processing of spiral steel pipe and stainless steel pipe        Update : 2022-03-22        View(s) : 1104

Let's first talk about the original surface of the stainless steel tube: NO.1 The surface that is subjected to heat treatment and pickling after hot rolling. Generally used for cold-rolled materials, industrial tanks, chemical industry equipment, etc., the thickness is thicker from 2.0MM-8.0MM. Dull...

How to solve the phenomenon of

How to solve the phenomenon of "goose head bend" of spiral steel pipe

Keywords :How to solve the phenomenon of "goose head bend" of spiral steel pipe        Update : 2022-03-18        View(s) : 1

If the large-diameter spiral steel pipe is processed to a certain length, bending must exist, which is a phenomenon and situation that is often encountered in steel pipes. Large-diameter spiral steel pipe is commonly known as "goose head bend" due to unevenness along the length or such bending...

What are the quality requirements for steel pipeline pickling

What are the quality requirements for steel pipeline pickling

Keywords :What are the quality requirements for steel pipeline pickling        Update : 2022-03-17        View(s) : 973

(1) After steel pipeline pickling, the rust and oil on the inner wall of the pipe are completely removed, and the cleanliness should meet the requirements of relevant standards. (2) Pickling parts shall not be over-pickled. If the pipe is soaked in the pickling solution for too long, the surfa...

Basic requirements and production temperature of straight seam steel pipe weld appearance

Basic requirements and production temperature of straight seam steel pipe weld appearance

Keywords :Basic requirements and production temperature of straight seam steel pipe weld appearance        Update : 2022-03-15        View(s) : 986

Basic requirements for the appearance of straight seam steel pipe welds 1. Surface of welded joints: A. No cracks, unfused, pores, slag inclusions, and splashes are allowed. B. The welding seam surface of pipelines with design temperature lower than -29 degrees, stainless steel and alloy st...

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