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Structural Steel Pipe

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

               

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.


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