Shanghai Katalor Enterprises, as a A135 grade A Welded Steel Pipe/tube Manufacturer,if you need ASTM A135 GR.A Electric-Resistance-Welded Steel Pipe/tube,contact us!

A135 Grade B Electric-Resistance-Welded Steel Pipe specification can be offered by KATALOR ,we are professional A135 Grade B Electric-Resistance-Welded Steel Pipe suppliers and manufacturer in China, if you need A135 Grade B Electric-Resistance-Welded Ste