cold-drawn seamless steel pipe

The cold drawn steel pipe is used for mechanical structure, hydraulic equipment, high dimensional accuracy and surface finish, good precision cold drawn seamless tube. Use precision seamless tubemanufacturing machinery structure or hydraulic equipment, etc., can greatly reduce the mechanicalprocessing time, improve material utilization, and help to improve the product quality.

Ruoyu the smaller size and better quality seamless tubes, cold-rolled, cold drawn or both methods. Cold rolled usually in two-roll mill, steel rolling in the ring pass a variable cross-section hole slot and fixed cone head. Cold drawing is usually in the 0.5 ~ 100T single chain or double chain drawing machine.


Cold call quality carbon structural steel seamless pipe, 10, 20 steel manufacturing, to do thehydrostatic test in addition to ensuring the chemical composition and mechanical properties, curling, flaring, flattening test.