Welded Steel Pipe, Seamless Steel Pipe, Hunan Standard ...
Hunan Standard Steel Co.,Ltd as the professional manufacturer of seamless steel pipe, welded steel pipe and pipe fittings. ... lines of hot rolled and cold drawn, 3 continuous rolling equipments, 3 H. F. and 6 spirally submerged arc welded pipe mills. Logistics. When steel pipe is completed and operational, it is the result of cooperation ...