The Specifications of the Seamless Steel Pipe and Presentation Quality
Specifications: the external diameter of hot-rolled pipe should be 32-630mm; the external diameter of cold-rolled pipe should be 5-200mm. The wall thickness should be 2.5-12mm.

Presentation quality: the inner and outer surface of the seamless steel pipe should not exist in the crack, pucker, seam and scab. These defects should be cleared, but the wall thickness and the external diameter must in the line with standard after clean those defects.

The two ends should be in straddle cut to a right angle, and the burr should be cleared. The seamless steel pipe with over 20mm wall thickness can be allowed to gas cutting and hot cutting.
Success Stories
China Petroleum Material & Equipment (group) Corporation
Yanzhou Coal Yulin Energy & Chemical Company Limited
The First Northeast Electric Power
China Nuclear Industry Corp. No.504 Factory