A139 GR.C ERW steel pipes

ASTM A139 standard are pipe mill grades having mechanical properties which differ from standard plate grades. ASTM A139 standard are usually manufactured as ERW pipes which are intended for conveying liquid, gas, or vapor. ASTM A139 standard covers A139 GR.A, A139 GR.B, A139 GR.C, A139 GR.D, and A139 GR.E. It is recommended that when using these grades, please under the engineer’s instruction.

A139 GR.C ERW steel pipe chemical compositions, max (%):

A139 GR.C ERW steel pipe mechanical properties:

A139 GR.C ERW steel pipe finish:

The manual, or automatic arc, welding of injurious defects in the pipe wall, provided their depth does not exceed one third the specified wall thickness, will be permitted. Defects in the welds, such as sweats or leaks, shall be repaired or the piece rejected all the option of the manufacturer. Repairs of this nature shall be made by completely removing the defect, cleaning the cavity, and then welding.

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