API 5L line pipe is a pipeline that transports oil, steam, and water extracted from the ground to oil and natural gas industrial enterprises through pipeline pipes.

ASTMA53 is the American Society for Testing and Materials' standard for uncoated and hot-dip galvanized welded and seamless nominal steel pipes.

DN 1200/1800 large diameter spiral steel pipe refers to a large diameter spiral steel pipe with a nominal diameter (DN) of 1200 mm or 1800 mm.

S235JR spiral carbon steel pipe is a carbon steel pipe with a spiral shape made of S235JR steel.

Plastic-coated steel pipes are steel-plastic composite steel pipes with a steel pipe as the base and a plastic anti-corrosion layer welded to the inner surface.

Spiral submerged arc welded steel pipe refers to a metal pipe with a spiral seam welded using the submerged arc welding process.