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Tech& Service

To be one of the world recognized manufacturer of technical abrasion resistant product and its allied product to assist society to fight against wear, corrosion, thermal, electrical and other critical requirement.

The correct way to store seamless pipes

With the development and progress of society, seamless pipes are now widely used in many industries.

How to check the quality of hot rolled seamless pipe?

High quality inspection of permeable layer and core.

Factors affecting the yield strength of seamless steel pipes

The yield strength of the seamless steel pipe refers to the yield limit of the seamless steel pipe when the yield phenomenon occurs, that is, the stress that resists the slight plastic deformation.

Spiral steel pipe manufacturing process

Spiral steel pipe (SSAW/ SAWH) is also called spiral welded pipe. It is made by rolling a low-carbon structural steel…

Packaging and transportation methods for fear of scratching pipes

Pipes are mostly used in the construction and manufacturing industries. With the continuous improvement of industry standards, the requirements for pipes are gradually increased.

Classification of quality defects of seamless steel pipes

Serious defects of seamless steel pipes: cracks, internal folds, external folds, rolling, delamination, scarring, concave, convex hulls, etc.

Four non-destructive testing methods for seamless steel pipes

Non-destructive testing is a method of non-destructive inspection of materials, workpieces or components, and its main purpose is to find discontinuous

Infolding of hot rolled seamless steel pipes

Infolding is the main quality defect in the production of hot rolled seamless steel pipe, which is produced in the perforation process and cannot be eliminated.

Passivation treatment of seamless steel pipe

Passivation is the last process step and the key step in chemical cleaning of steamless steel pipe.

Common terms of seamless pipe

Nominal size of seamless steel pipe is the nominal size specified in the standard, is the ideal size desired by users and production enterprises, and is also the order size indicated in the contract.