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The biggest difference between ERW steel pipe and seamless steel tube is that ERW has a weld seam, which is the key to the quality of ERW steel pipe. Modern ERW steel pipe production technology and eq...

1) Tube appearance inspection There are two kinds of raw material sources for casing tube blanks, one is seamless tube blank, and the other is ERW tube blank. The above blanks should be inspected as f...

Oil casing pipe in-plant inspection: defect handling Various defects found in the pipe body or pipe end that affect the performance of the pipe, such as pits, cracks, folds, bumps, bumps, gouges, d...

1. Gage length measurement The basic principle is: two fixed-length grating rulers are set on the outer sides of the two ends of the seamless steel tube, and the rod ruler is used to drive the grating...

Material analysis of 3PE anti-corrosive steel pipe 3PE anticorrosive steel pipe base material includes seamless steel pipe, spiral steel pipe and straight seam steel pipe. The three-layer structure po...

Straight seam steel pipe is a steel pipe with welds parallel to the longitudinal direction of the steel pipe. It is usually pided into metric welded steel pipes, welded thin-walled pipes, transformer ...

In recent years, anticorrosive steel pipes have begun to be widely used in the construction of water and natural gas pipelines. Anti-corrosion steel pipes are usually selected from spiral steel pipes....

Nowadays, high-frequency straight seam welded pipes (ERW pipe) are mainly used in water supply engineering, power industry and petrochemical industry, etc. There are many types of water pipes used in ...

Tubing naturally has a smaller diameter than casing pipe, except for the 4 1/2-inch diameter. An outer diameter of 114.3 mm (4 1/2 inches) is considered a threshold and can be either casing or tubing....

The surface of the stainless steel pipe will change differently in different environments. Knowing the influence of the use environment on the stainless steel pipe can choose the right model, otherwis...