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Surface defects of seamless steel pipes and their causes
The causes of surface defects of seamless steel pipes are intricate. There are hundreds of influencing factors listed, and sometimes there are dozens of factors for the same defect, and the occurrence of defects has a great relationship with the steel type. This is why the pro...Read more -
Application and material of stainless steel seamless steel pipe
Stainless steel seamless steel pipe details – stainless steel pipe material Material: 201(1Cr17Mn6Ni5N), 202(1Cr18Mn8Ni5N), 301(1Cr17Ni7), 302(1Cr18Ni), 304(0Cr18Ni9), SS304, TP304 304L(00Cr19Ni10), SS304L, TP304L 321(1Cr18Ni9Ti), SS3 21. TP321, 316 (0Cr17Ni12Mo2) , SS31...Read more -
Analysis of Process Elements Affecting High-Frequency Longitudinal Welded Pipe
The main process parameters of high-frequency straight seam welded pipe include welding heat input, welding pressure, welding speed, opening angle, position and size of the induction coil, position of impedance, etc. These parameters have a greater impact on improving the qual...Read more -
The installation process of stainless steel pipe
The installation method of stainless steel pipes is the same as that of ordinary carbon steel, and some processes have the following process requirements. 1. Stainless steel pipes should not be in direct contact with other metals for hoisting and should be padded with non-meta...Read more -
Eddy’s current non-destructive testing method for a weld seam of spiral steel pipe
Pipeline transportation, as an efficient means of special transportation, has played an increasingly important role in oil and gas transportation and other fields. At present, domestic large-diameter transportation pipelines are mainly constructed of spiral welded steel pipes....Read more -
Identification method of fake and shoddy thick-walled seamless steel pipe
1. Shoddy thick-walled seamless steel pipes are prone to folding. Folding is a variety of fold lines formed on the surface of thick-walled seamless steel pipes, and this defect often runs through the longitudinal direction of the entire product. The reason for the folding is t...Read more -
Improvement of the Stainless Steel Elbow Pressing Process
Stainless steel elbows are widely used in petrochemical, instrumentation, food, and other industries because of their good corrosion resistance. For professional pipe fittings manufacturers, stainless steel elbows are a high-value-added product, and their quality and output di...Read more -
Technical method for deformation detection of oil and gas steel pipelines
First, the development direction of steel pipeline inspection technology. During the operation of long-distance oil and gas steel pipelines, they are usually corroded from both internal and external environments. Internal corrosion is mainly caused by the combined action of th...Read more -
The seamless characteristics of ERW steel pipe
The biggest difference between electric resistance welding (Electric Resistance Welding, ERW for short) and seamless steel pipe is that ERW has a weld seam, which is also the key to the quality of ERW steel pipe. Modern ERW steel pipe production technology and equipment, due t...Read more