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

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