Standard: JIS, ASTM, GB
Length: any
Wall thickness: 0.5mm~30mm
Diameter: 6mm~630mm
Place of Origin Shaanxi, China (Mainland)
Brand Name: shanghai, wenzhou, jiangsu, an' hui
ModelNumber : 201.202.304.304L. 310S. 310.309S. 309.316L. 316.317L. 317.321.347H

We can produce other standard as the customers' requirement