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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) : 358

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...

Surface treatment and processing methods of thick-walled steel pipes

Surface treatment and processing methods of thick-walled steel pipes

Keywords :Surface treatment and processing methods of thick-walled steel pipes        Update : 2023-05-04        View(s) : 371

To improve the service life of oil and gas pipelines, surface treatment is usually carried out to facilitate the firm combination of thick-walled steel pipes and anti-corrosion layers. Common treatment methods are: cleaning, tool de-rusting, pickling, spray shot blasting, and de-rusting. 1. Pic...

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) : 306

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...

Process characteristics of spiral steel pipe

Process characteristics of spiral steel pipe

Keywords :Process characteristics of spiral steel pipe        Update : 2023-04-27        View(s) : 288

Spiral steel pipes are mainly used in water supply engineering, the petrochemical industry, the chemical industry, the electric power industry, agricultural irrigation, and urban construction. They are 20 key products developed. Used for liquid transportation: water supply and drainage. For gas ...

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) : 320

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...

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