... storage have been set up in ourcompany, and 20,000 tons of available goods have been prepared ... steel tube and boiler tube company; Alloy pipe company; stainlesspiper and plate company Hardware metal ... Tianjin Steel Pipe Group Co., Ltd.in China.With many years' rapid development and our stable supply ... , JISG3463 and JISG3448. our products are made of 10#, 20#, 35#, 45#, ST45, ST55, CK45, Q235 (B, ...