China A519 1010 Cold Drawn Seamless Tube Manufacturer Provides ASTM A519 1010 Cold Drawn Seamless Tube, Annealed, OD 28.3mm X ID 13.5mm, Black Coacting.
China API X52 PSL1 Seamless Steel Pipe Supplier Provides API X52 PSL1 Seamless Steel Pipe, 219.1mm x 9.5mm, Black, Suitable for High Pressure Conditions.