OCTG, or well tubing, plays a crucial role in the extremely harsh environments of oil and gas extraction. These steel pipes, including casing, tubing, and drill pipe, are highly specialized, capable of withstanding immense pressure, temperature variations, and corrosive environments.

Galvanized square tube is a hollow square-section steel pipe made from hot-rolled or cold-rolled galvanized strip steel or galvanized coil as raw material, cold-bent and then high-frequency welded. Alternatively, it can be made by hot-dip galvanizing pre-formed cold-bent hollow steel pipes.

SCH 20 CS Seamless Pipe refers to a carbon steel seamless pipe manufactured according to the Schedule 20 wall thickness standard. Due to its thin-walled structure, good mechanical properties, and wide applicability, this type of pipe is widely used in water, gas, and light-duty industrial transportation systems.

Precision seamless tubes are high-precision steel tubes produced by cold rolling or cold drawing. Precision seamless steel tubes offer advantages such as no oxide layer on the inner and outer walls, no leakage under high pressure, high precision, high surface finish, and no deformation or cracks during cold bending, flaring, or flattening.

When brown rust spots appear on the surface of stainless steel pipes, people are often surprised, thinking, "Stainless steel doesn't rust; if it rusts, it's not stainless steel, and there might be a problem with the steel quality."

In the steel industry, 304 stainless steel plate are widely used in the manufacture of equipment for chemical, oil refinery, and natural gas plants, as well as wastewater treatment facilities.