Standard:API, ASTM, BS, DIN, GB, JIS Certification: API Thickness: 0.6 – 12 mm Surface Treatment: Brown painting Section Shape:Round Special Pipe:API Pipe Outer Diameter:19 – 273 mm Alloy Or Not: Non-alloy Place of Origin: Tianjin, China OD: 1/2″-10″ Secondary Or Not: Non-secondary Material: A53,A106 Application: Hydraulic Pipe fixed length:6 meter,5.8meter Technique: Cold Drawn