... .T 0.24--1.97 (6-50mm) material carbon steel, special carbon steel, Q235,Q345,X46,X60,X70,X80 The equipment can ... from 3m to 12.5m,steel grade could be simple carbon steel,special type steel and low alloy steel ,the steel grade could be up ... construction pipe for high voltage, wind power, bridges, high-speed rail steel construction etc. www.haiqianwei.com