cuixiaoxia0104(at)gmail(dot)comcui.xiaoxia(at)hotmail(dot)comProducts Description:carbon square Steel Pipe1) Material of weld steel pipe: Q195, Q215, Q235, Q345, X52, X60 STK500, or per the buyers demand.
2) Standards: BS1387, ASTM A or B, GB/T3081, GB/T9711, API 5L, API 5C...
Products: steel tip darts,
leak copper pipe