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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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Distinguishing method of welded steel pipe and seamless steel pipe

Distinguishing method of welded steel pipe and seamless steel pipe

Keywords :Distinguishing method of welded steel pipe and seamless steel pipe        Update : 2023-05-05        View(s) : 337

1. Metallographic method: Metallographic method is the main method to distinguish welded steel pipes and seamless steel pipes . There is no welding material added to the high-frequency resistance welded steel pipe, so the weld seam in the welded steel pipe is very narrow, and the weld seam cannot...

Four measurement methods for the length of spiral steel pipe

Four measurement methods for the length of spiral steel pipe

Keywords :Four measurement methods for the length of spiral steel pipe        Update : 2023-04-28        View(s) : 291

How to accurately measure the length of spiral steel pipe is very important for spiral steel pipe manufacturers. After years of production experience, four methods of testing length have been summed up: 1. Improved encoder length measurement: This method is an indirect measurement method, w...

The role of Chromium and Nickel elements in stainless steel pipes

The role of Chromium and Nickel elements in stainless steel pipes

Keywords :The role of Chromium and Nickel elements in stainless steel pipes        Update : 2023-04-26        View(s) : 303

Stainless steel pipe is a general term for iron-based alloy steel with anti-corrosion and anti-oxidation properties through the passivation of chromium with a chromium content of more than 13%. The main component of stainless steel pipe is iron. There is only one element that determines the prop...

Common anti-corrosion methods of 3PE anti-corrosion steel pipe

Common anti-corrosion methods of 3PE anti-corrosion steel pipe

Keywords :Common anti-corrosion methods of 3PE anti-corrosion steel pipe         Update : 2023-04-23        View(s) : 315

1. Steel pipeline anticorrosion generally adopts two main methods of external coating and cathodic protection. 2. Although most of the surface of the steel pipe is covered by the coating, a slight leak will cause an incredible corrosion rate, or even perforation or cracking. Therefore, in t...

Large-diameter steel pipe inner wall anticorrosion

Large-diameter steel pipe inner wall anticorrosion

Keywords :Large-diameter steel pipe inner wall anticorrosion        Update : 2023-04-20        View(s) : 301

Large-diameter steel pipe inner wall anticorrosion 1. Before processing all steel pipes, the steel plate on the inner wall side of the large-diameter steel pipe shall be de-rusted until the metal is exposed to metallic luster (whitening). It should meet the sa2.5 standard required in GB8923-88...

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