Good quality at the most competitive price Material:Carbon Steel echniques:extruded MOQ:1 pcs certificate:ISO9001 ASME API Standard:GB/T12459, GB/T13401, ASME B16.9, SH3408, SH3409, HG/T21635, HG/T21631, SY/T05010 or as customer's requirements.Material: carbon steel, alloy steel, stainless steel , seamless pipe, straight seam, spiral seam pipe.R Bend radius:3D≤R≤6000mm, (R=3D, 4D, 5D, 6D, 7D, 8D, ...