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Pipe Type: Structural Pipe, Structural Welded Pipe, Welded Structural Pipe
Application: In the Structural Engineering Area and Construction Industry
Specification: OD: 88.9mm ~ 660mm
WT: 3mm ~ 17.5mm
LENGTH: 0.5mtr ~ 22mtr (5.8/6/11.8/12 meters, SRL, DRL)
Standard & Grades: ASTM A500 Grade 1/2/3, EN 10219
End: Square Ends/Plain Ends (straight cut, saw cut, torch cut), Beveled/Threaded Ends
Surface: Bare, Lightly Oiled, Black/Red/Yellow Painting, Zinc/Anti-corrosive Coating
Packing: Bundled/In Bulk, Plastic Caps plugged, Waterproof Paper wrapped
Production Process of Structural Steel Pipe
The structure steel pipe has hot - rolled seamless steel tube and welded steel tube.The seamless steel tube for structure is divided into two types according to the provisions of "seamless steel tube for structure" (GB/ t8162-2008) : hot rolling (extrusion, expansion) and cold drawing (rolling).The outer diameter of hot-rolled steel pipe is 32-630mm and the wall thickness is 2.5-75mm.The outer diameter of cold-drawn steel pipe is 5-200mm and the wall thickness is 2.5-12mm.Welded steel pipe is made of steel plate or steel strip after crimping and forming, which can be divided into straight welded steel pipe and spiral welded steel pipe.The outer diameter and wall thickness of the direct-welded steel pipe are 5-508mm and 0.5-12.7mm respectively, which shall comply with the provisions of GB/ t3793-2008.The welded steel pipe for low-pressure fluid transportation is also called common welded pipe, commonly known as clarkpipe. The specification is expressed in mm of nominal diameter, which should comply with the provisions of GB/ t3091-2008 for low-pressure fluid transportation.
Specification of Structural Steel Pipe
OD: 88.9mm ~ 660mm
WT: 3mm ~ 17.5mm
LENGTH: 0.5mtr ~ 22mtr (5.8/6/11.8/12 meters, SRL, DRL)
Technical Data of Structural Steel Pipe
Chemical Composition
|
Grade |
C |
Mn |
P |
S |
Si |
Cr |
Mo |
|
1010 |
0.08-0.13 |
0.30-0.60 |
≤0.04 |
≤0.05 |
- |
- |
- |
|
1020 |
0.08-0.23 |
0.30-0.60 |
≤0.04 |
≤0.05 |
- |
- |
- |
|
1045 |
0.43-0.50 |
0.60-0.90 |
≤0.04 |
≤0.05 |
- |
- |
- |
|
4130 |
0.28-0.33 |
0.40-0.60 |
≤0.04 |
≤0.05 |
0.15-0.35 |
0.80-1.10 |
0.15-0.25 |
|
4140 |
0.38-0.43 |
0.75-1.00 |
≤0.04 |
≤0.05 |
0.15-0.35 |
0.80-1.10 |
0.15-0.25 |
Mechanical Properties
|
Grade |
Condition |
Tensile strength Mpa(min) |
Yield stength Mpa(min) |
Elongation %(min) |
|
1020 |
CW |
414 |
483 |
5 |
|
SR |
345 |
448 |
10 |
|
|
A |
193 |
331 |
30 |
|
|
N |
234 |
379 |
22 |
|
|
1025 |
CW |
448 |
517 |
5 |
|
SR |
379 |
483 |
8 |
|
|
A |
207 |
365 |
25 |
|
|
N |
248 |
379 |
22 |
|
|
4130 |
SR |
586 |
724 |
10 |
|
A |
379 |
517 |
30 |
|
|
N |
414 |
621 |
20 |
|
|
4140 |
SR |
689 |
855 |
10 |
|
A |
414 |
552 |
25 |
|
|
N |
621 |
855 |
20 |
Surface of Structural Steel Pipe
Packing of Structural Steel Pipe