Description
Seamless steel pipe is a tubular section or hollow cylinder, usually but not necessarily of circular cross-section, used mainly to convey substances that can flow — liquids and gases (fluids), slurries, powders and masses of small solids.
Seamless Pipe (and tubing) is made by extruding a steel block or by drilling a solid steel bar. Next, the extrusion or the drilled steel bar is cold drawn through a dye to achieve the diameter and thickness needed. Because this process can cause mechanical hardening, sometimes the material is annealed and straightened as a final process. Seamless Pipe & Tubing is subdivided as:
Cold Drawn Seamless, or CDS, exhibits precise tolerances and a good surface finish.
Hot Finished Seamless or HFS has less critical tolerances and a somewhat scaly finish and is not as strong as CDS.
For Drawn over Mandrel, or DOM tubing, the first stages of manufacturing are identical to the ones used to make electric resistance welded tubing, but in the finishing stages the entire flash weld is taken out and the tube is cold drawn over a mandrel. A mandrel is a round object against which material can be forged or shaped. The cold-drawn process provides the tube with better dimensional tolerances, improved surface finish and the strongest weld strength achievable.
API 5L line pipe is a type of seamless or welded steel pipe used for the transportation of petroleum, natural gas, and other fluids in the oil and gas industry. It is manufactured according to API 5L specification which sets standards for the manufacture of pipes, including dimensions, materials, mechanical properties, and testing. API 5L line pipe comes in various grades such as Grade A, B, X42, X46, X52, X56, X60, X65, X70, X80, and others, with different yield strengths and tensile strengths to suit different applications. It is widely used in pipelines for onshore and offshore oil and gas transmission, as well as in water and slurry transportation.
API 5L LINE PIPE: Specification for Line Pipe
For conveying gas, water and oil either in the oil or natural gas industries Application: Oil, Gas and water delivery; Refinery, Boiler and Mechanical equipment manufacturer; structure construction; drilling, ship building and etc.
API 5L-PSL 1 Chemical Requirements
API 5L-PSL 2 Chemical Requirements
API 5L-PSL 1 Mechanical Properties
API 5L-PSL 2 Mechanical Properties
Rich production technology, advanced equipment, high automation degree and high production precision, complete molding. As the designated supplier of major energy enterprise groups under the jurisdiction of SASAC, the company has won a number of national and provincial reputations.
