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ASTM A53 / A53M Gr.B welded and seamless steel pipe

The Standard Specification is for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

ERW steel pipe (Electric resistance welding steel pipe), it is produced through Electric resistance welding process which is forming a seam by electric-resistance welding, wherein the edges to be welded are mechanically pressed together and the heat for welding is generated by the resistance to flow of electric current applied by induction or conduction.

SMLS steel pipe (Seamless steel pipe) is pipe without seam produced by a hot-forming process, which can be followed by cold sizing or cold finishing to produce the desired round shape, dimension and properties.

Mainly Technical Data

Out Diameter

O.D.:1/2″—24″ / 21.3mm-609.6mm /DN15-DN600

Wall thickness

SCH10, SCH20, SCH30, STD, SCH40, SCH60, SCH80, XS, XXS / 2mm-17.48mm

Pipe Length

 Single Random Length and double Random Length.
 SRL:5.8M-6M DRL:10-11.8M-12M

 Fixed length (5.8m, 6m, 9m,11.8m,12m,12.2m)
 As customer’s requirements

Surface Treatment

Black lacquer paint, varnish lacquer coated, oil coated, Hot dipped galvanized, Red Epoxy coating, anti-corrosion coated, etc.

Pipe Ends

Under 2inch plain end. 2 inch and above Beveled end.
Plastic caps (Small OD:1/2″-12″) & Steel protector (large OD: 14″-24″).
Grooved ends / Shoulder ring / Welded with flange

Square cut / Thread ends with coupling

Marking

Standard marking, or according to your request.

Marking Method: On-line Spray white paint

Packaging

Loose package;  
Packaged in hexagonal bundles (2.5Ton Max); bundled pipes with two slings at the both end for easy loading and discharging; waterproof woven bag.

Inspection & Test

Chemical composition (C Si Mn P S, etc.)
Mechanical property (Yield strength, Tensile strength, Elongation test)
Metallographic analysis
Heat treatment / Flatting test / Hydrostatic test
NDT test (UT test, EMAT test, ET test) 

Dimension measurement

Size information 

Size

Inch

OD

STD

SCH40

SCH80

XS

DN15

1/2″

21.3

2.77

2.77

3.73

3.73

DN20

3/4″

26.7

2.87

2.87

3.91

3.91

DN25

1″

33.4

3.38

3.38

4.55

4.55

DN32

1 1/4″

42.2

3.58

3.56

4.85

4.85

DN40

1 1/2″

48.3

3.68

3.68

5.05

5.08

DN50

2″

60.3

3.91

3.91

5.54

5.54

DN65

2 1/2″

73

5.16

5.16

7.01

7.01

DN80

3″

88.9

5.49

5.49

7.62

7.52

DN90

3 1/2″

101.6

5.74

5.74

8.08

8.08

DN100

4″

114.3

6.02

6.02

8.58

8.56

DN125

5″

141.3

6.55

6.55

9.53

9.53

DN150

6″

168.3

7.11

7.11

10.97

10.97

DN200

8″

219.1

8.18

8.18

12.7

12.7

DN250

10″

273.1

9.27

9.27

15.09

12.7

DN300

12″

323.8

9.53

10.31

17.48

12.7

DN350

14″

355.5

9.53

11.13

19.05

12.7

DN400

16″

406.4

9.53

12.7

21.44

12.7

DN450

18″

457.2

9.53

14.27

23.83

12.7

DN500

20″

508

9.53

15.09

26.19

12.7

DN550

22″

558.8

9.53

–

28.58

12.7

DN600

24″

609.6

9.53

17.48

30.96

12.7

 More information or any inquiry please contact us！

Ada Chen – Business development

Tianjin United Steel Pipe Co., Ltd

Email: ada.c@tuspipe.com

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