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
