ERW Steel Pipe Specifications

Some novices don’t know ERW tubes standards, when they try to buy steel pipe for the first time, they usually feel puzzled. So, there is a brief introduction of Prime’s ERW steel pipes specifications for all of you, including application, specification, standard & grade, end, surface, and packing.

The application of ERW steel pipe:

For low pressure fluid transmission, such as water pipelines, agriculture & irrigation (water mains, sewerage systems,industrial water lines, ;ant piping, deep tube-wells & casing);
For machinery manufacturing, such as engineering purpose, fencing, scaffolding, line pipes etc.;
For Gas pipe lines (pipe lines for natural gas), LPG and other non-toxic gas.

The specification of ERW steel pipe provided by Prime Steel Pipe:

OD (Outside Diameter): 21.3mm ~ 660mm
WT (Wall Thickness): 1mm ~ 17.5mm
Length: 0.5mtr ~ 22mtr (5.8/6/11.8/12 meters, SRL(Single the length, the nominal length is 40FT, 12m), DRL(Double the length, The nominal length is 20FT, 6m))

The standard & grade of ERW steel pipe:

The standard and grade provided by Prime Steel Pipe is ASTM A53 and Grade A/B/C.
ASTM A53 is a carbon steel alloy, used as structural steel or for low-pressure plumbing. The alloy specifications are set by ASTM International, in specification ASTM A53/A53M. A53 pipe comes in three types and two grades, A53 Type F, which is longitudinally furnace butt welded or continuous welded (Grade A only), A53 Type E, which is longitudinally electric resistance welded (Grades A and B), and A53 Type S, which is seamless pipe, produced by hot working, and possibly cold finishing, the steel (Grades A and B).

Grade A/B/C Chemical Composition

Symbol Chemical composition
C max Si max  Mn max  P max  S max
Grade A 0.14 0.04 0.90 0.035 0.040
Grade B 0.17 0.04 0.90 0.035 0.040
Grade C 0.24 0.04 0.90 0.035 0.040


Grade A/B/C Mechanical Properties
Symbol Yield point min MPa Tensile strength MPa Elongation in 2 in.(50mm)%
Grade A 165 310-450 30 min
Grade B 185 345-450 28 min
Grade C 205 380-515 25 min

The End of ERW steel pipe:

Square Ends/Plain Ends (straight cut, saw cut, torch cut), Beveled/Threaded Ends

The surface of ERW steel pipe:

Bare, Lightly Oiled, Black/Red/Yellow Painting, Zinc/Anti-corrosive Coating

The packing of ERW steel pipe:

Bundled/In Bulk, Plastic Caps Plugged, Waterproof Paper Wrapped

About Hunan Prime Steel Pipe Co., Ltd

HUNAN PRIME STEEL PIPE is the export gateway of SHINESTAR HOLDINGS GROUP. We are dedicated in providing and exporting high performance-price ratio welded & seamless steel pipes and fittings covering various steel grades. At Prime Steel Pipe, we believe that honest communication, expertise in our industry, and prompt execution lead to strong long-term relationships. Our professioanl team provides " one-stop procurement" servics to coordinate with your project regulation, site and terrain, and ensure the best quality of products by assigning skillful experts at every stage of production. Our principles is to keep the honesty in mind, to win reputation by trust. We strives to providing quality products, competitive price and value-added services to our clients throughout the world.

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