ASTM A53 GR.B ERW Pipe is produced in individual length or in continuous length from coiled skelp and subsequently cut into individual but joint where in coalescence is produced by the heat obtained from resistance of the pipe to the flow of the electric

ASTM A513 GR.1040 ERW Pipe has high strength and good machine ability, cold deformation of plastic, welding, quenching and tempering can be welded, and heat treatment without temper brittleness.

ASTM A53 GR.A ERW Pipe is produced in individual length or in continuous length from coiled skelp and subsequently cut into individual, but joint where in coalescence is produced by the heat obtained from resistance of the pipe to the flow of the electric