A139 GR.E ERW steel pipes always find themselves a widely application areas in conveying liquid, gas, or vapor. A139 GR.A ERW steel pipes are processed to begin as a coiled plate of steel with appropriate thickness

ASTM A139 standard covers A139 GR.A, A139 GR.B, A139 GR.C, A139 GR.D, A139 GR.E. A139 GR.D ERW steel pipes always find themselves a widely application areas in conveying liquid, gas, or vapor.

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.

Compared with A139 GR.A ERW steel pipes, A139 GR.B Electric Resistance Welded (ERW) steel pipes, namely A139 GR.B ERW steel pipes own a much higher carbon content, 0.26%.

The processing of A139 GR.A ERW steel pipes begins as a coiled plate of steel with appropriate thickness and specific width to form a pipe that conforms to its relevant specification.