HEBEI PROVINCE GOLD MYSTERIOUS PIPE CO., LTD is a manufacture of specialize in the production of seamless steel tube, our products are mainly used in automobile parts/ mechanized equipment manufacturing industries and low-high pressure boiler tubes, the steel grade of material include: 10#, 20#, 35#, 45#, 20Cr, 40Cr, 30CrMo, 35CrMo etc, we can purchase special material according to customer’s request. The specification of round pipe: outer diameter is 15-80mm, inner diameter is 1-12mm. We can develope and produce special shape pipe for special usage according to the customer’s mechanmical property request, and we already produced: triangle pipe / hexagonal pipe / lemon pipe / twelve side pipe / eight side pipe / laddertron / tooth shape pipe and so on.