My name is sachi cheng , from Shijiazhuang Canglong Pipeline Co., Ltd, which specializes in manufacturing and selling industrial pipe fittings of various materials including carbon steel, alloy steel and stainless steel. We have successfully passed ISO9001:2000 International Quality Management System Standard Certificate and API Certificate , Our main Products as blow : 1.Seamless & Weld Pipes 2.Elbows.3.Bends 4.Tees 5.Reducers 6.End Caps. 7.Flange