ASTM A106 & A53

Contact Form Demo (#3)


Elite Piping Manufacture Co., Ltd
Elite Piping Manufacture Co., Ltd

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.

ASTM A106 & A53

ASTM A106 and A53 are two commonly used specifications for seamless carbon steel pipes. They are widely used in various industries such as oil and gas, construction, and mechanical engineering.

ASTM A106 covers seamless carbon steel pipes for high-temperature service (up to 750°F) and pressure applications. It includes grades A, B, and C, which are different in terms of their chemical composition and mechanical properties.

ASTM A53 covers seamless and welded black and hot-dipped galvanized steel pipes in NPS (National Pipe Size) 1/8 to NPS 26 (DN 6 to DN 650). The steel categorized in this standard must be open-hearth, basic-oxygen, or electric-furnace processed and must have the following chemical requirements: carbon, manganese, phosphorus, sulfur, copper, nickel, chromium, molybdenum, and vanadium. The types of steel for the pipe fittings include Grade A and Grade B.

Both standards specify different requirements for mechanical properties, chemical composition, and testing. It is important to select the appropriate specification based on the specific application and requirements.

ASTM A106: American Society for Testing and Materials
Seamless Carbon Steel Pipe for High-Temperature Service
Application: Oil, Gas and water delivery; Refinery, Boiler and Mechanical equipment manufacturer; structure construction; drilling, ship building and etc.

ASTM A53: American Society for Testing and Materials
Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
Application: Oil, Gas and water delivery; Refinery, Boiler and Mechanical equipment manufacturer; structure construction; drilling, ship building and etc.

ASTM A106 Chemical Requirements

Elite Piping Manufacture Co., Ltd

Mechanical Properties

ASTM A106 & A53

ASTM A53 Chemical Requirements

ASTM A106 & A53

Mechanical Properties

ASTM A106 & A53

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.

Additional information


Carbon Steel


Widely used in Petrochemical, Coal Chemical, Refining, Oil and Gas Transmission, Marine Environment, Power, Heating and Other projects

Size Range

DN 6 to DN 650

Specifications and Steel Grade

ASTM A106; ASTM A53; ASTM A210; ASTM A333; ASTM A519-98; ASTM A179;
BS 1387; EN 10297; EN 10355
DIN 2391; DIN 17175; DIN 1629
API 5L GRB, X42, X46, X52, X56, X60, X65
JIS 3444; JIS 3466; JISG 3445; JISG3454; STPG 370
GB/T 8162-1999; GB/T 8163-1999

Shopping cart


No products in the cart.

Continue Shopping