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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.

Surface quality of seamless steel pipes

The standard specifies the requirements for "smooth surface" of steel pipes.

Quality defects and prevention of seamless steel pipe blanks

For the round tube blank, the appearance and shape defects of the tube blank mainly include the diameter and ovality of the tube blank

astm 178 grade d heat exchanger tube qualified products packed

Heating defects of tube blanks

After rolling the pipe rolling machine, the waste tube is generally uniformly consistent, and it is difficult to meet the requirements of the final rolling temperature of the waste tube.

Wild tube heating defects and prevention

After rolling the pipe rolling machine, the waste tube is generally uniformly consistent, and it is difficult to meet the requirements of the final rolling temperature of the waste tube.

Quality Defects of Perforated Capillary and Its Prevention

Perforation is the first process and one of the most important deformation processes of hot-rolled seamless steel pipe.

How to prevent quality defects in rolled tubes

The tube rolling process is the main process to determine the wall thickness of the seamless steel pipe, and its function is to reduce the wall of the perforated capillary. The main defects are: uneven wall thickness of the waste pipe, surface cracks, pits, abrasions, rolling, puncturing (pulling) and so on.

Sizing and reducing diameter of steel pipes

The geometric size of the steel pipe is out of tolerance, which mainly refers to the diameter, wall thickness or ovality of the steel pipe after the specified (reduced) diameter does not meet the size and deviation requirements specified in the relevant standards.