ASTM Carbon steel material ,pass CE and ISO, flange(fittings,pipe fitting,stainless flange) 1) Type: socket welding pipe fitting2) Size: we can also produce ... B16.9,,DIN 2605,JIS ,GB/T12459,GB/T134015) Material: stainless steel (304, 304L, 316, 316L, 321, 321H, 310S, 347H)6) Our ...