1). OD: 1/2''-24'',WT: SCH10-SCH160

2). Standard: API 5L, DIN1629/2448, DIN17175, ASTM A53,

  ASTM A106B, ASTM A179, ASTM A210, ASTMA335, ASTMA519 and so on.

3). Superficial Treatment: black painting

4). Technique: cold drawn and hot rolled

5). Application:fluid pipe, oil pipe