Alloy pipe is a kind of seamless steel pipe. Its performance is much higher than common seamless steel pipes. It is widely used in petroleum, aerospace, chemical, electric power, boiler, military and other industries.

Stainless steel pipe is a kind of hollow long circular steel, mainly widely used in petroleum, chemical, medical, food, light industry, mechanical instruments and other industrial transportation pipeline and mechanical structure parts.

API 5L is the standard specification for the samless and welded steel pipes for use in pipeline transportation systems in the petroleum and natural gas industries. It includes the requirements for the manufacture of two product specification level (PSL1 and PSL2) API 5L is not applicable to cast pipe.

Aluminum tube is a kind of non-ferrous metal tube, refers to the use of pure aluminum or aluminum alloy by extrusion processing along its longitudinal full length hollow metal tubular material.

Carbon steel tubes are made of ingot or solid round steel that is perforated into wool tubes and then hot rolled, cold rolled or cold drawn.

Rectangular pipe is a hollow strip of steel, also known as flat pipe, flat square pipe or square flat pipe (as the name suggests). At the same time of bending and torsional strength, light weight, so it is widely used in the manufacture of mechanical parts and engineering structures.

API oil casing has a hollow cross-section and is used in large quantities as a pipeline for transporting fluids such as oil, natural gas, gas, water, etc.

Welded steel pipe, also known as welded pipe, is a steel pipe made of steel plate or strip steel that has been rolled and formed and then welded, generally 6 meters in fixed length.

Steel pipe pile is suitable for the foundation of wharf and port construction, its diameter range is generally between 400-2000mm, the most commonly used in 1800mm.