We are Cangzhou Qiancheng Steel-pipe Co., ***** products mainly include two series-- one is Carbon and Alloy steel pipe, the other is pipe fittings-elbow, flange , tee, etc we have API certificates in the attachment, please check it 1.Size: From 1/2 Inch to 30 Inch *****: SCH20, SCH30, SCH40, STD, SCH80, SCH100. SCH120, SCH160. XXS 3.Standard ASTM A106 /A53 GR .B , A335, A213, API 5L ANSI, ASME, DIN, JIS, BS, GB ***** Alloy and carbon steel (seam & seamless) A106 GR.B/A53 GR.B API 5L GR.B X52, ASTM A333 GR.1-7, ASTM A335P11, P22, P5, P9, P91, ST35.8, ST42, ST52, BS1387, G3454, G3444, G3456, 20#, Q235B, Q345B 5.Length 5.8 meters for 20&＃039; container, 6 meters to 11.8 meters for 40&＃039; container , Or according to customers demand 6.Packing In bundle, black paint, caps, beveled ends or plain ends. 7.Payment Terms: 30% TT Down Payment, balance against L/C at sight 8.Delivery Term: FOB / CFR / CIF 9.Delivery Lead Time: 10 days to 60 days.