Our company is capable of producing high-frequency welded pipe of 1/4-inch to 20-inch (13.5mm to 508mm) in outside diameter and 0.8mm to 16mm in wall thickness, and square steel pipe of 15 x 15mm to 400 x 400mm and wall thickness of 0.8 to 16mm. The fabrication is carried out according to national standards of GB/T3091-2001, GB/T13793-92 and GB/T6728-2002. Our products are sold in markets throughout China and Southeast Asia, Middle East, Europe, America. Their applications are in largespan netting engineering, water gas pipeline, architecture, electric engineering, machinery, bridge, steel structure, and ground piling. We have a very good reputation and promise to provide high quality products and excellent services. Clients both at home and abroad are welcome to contact us. Contact Person : MR. smith (EXPORT MANAGER) Add : No.268 Hongxing Rd, Xiaoshan Development Area, Hangzhou City, China.