OCTG stands for "Oil Country Tubular Goods," which refers to a category of specialized steel pipes used in the exploration, production, and transportation of oil and natural gas.

ASTM A53 black steel pipe, also referred to as ASME SA53 pipe, is an excellent candidate for most processing.

Z-shaped steel sheet piles are made of steel plates that are cold-formed into a Z-shape. Its cross-sectional shape is Z-shaped and has a certain stiffness and bearing capacity. The length of Z-shaped steel sheet piles can be adjusted as needed, usually 6-12 meters.

Carbon steel ERW pipe refers to a steel pipe welded by carbon steel through resistance welding.

When comparing grade A and grade B black steel pipes, it is important to consider their differences in terms of chemical composition, mechanical properties, and specific applications.

ERW pipe hydrostatic test is a method to determine the strength and leakage prevention ability of ERW pipe.