Oil Country Tubular Goods – OCTG Grades and Steel Mills

Oil Country Tubular Goods are manufactured in steel mills that specialize in either ERW or SMLS tubular goods for the oil and gas industry.

What is ERW? 

  • ERW (Electric Resistance Weld) Pipe is made by shaping rolls of coiled steel and has a longitudinal weld seam.

What is SMLS?

  • SMLS (Seamless) Pipe is made by heating and piercing a solid steel billet and piercing the pipe with a mandrel to create a tube. The desired length, Wall thickness and and OD are created by stretching and rolling of the steel tube.