ASTM A53

api 5l-api 5l gr.b-api 5l material specification

What is ASTM A53 Pipe?

At UNIASEN, we present to you the ASTM A53 steel pipes, designed for mechanical and pressure applications, and perfectly suited for your ordinary uses in steam, water, gas, and air lines.

With the ability to withstand welding and forming operations like coiling, bending, and flanging, our pipes are crafted to meet specific qualifications.

Whether you need Seamless or Welded, Black or Hot-Dipped Galvanized pipes, we have the ideal solution for your coiling, bending, flanging, and other special purposes.

Trust in our quality, as we ensure that the pipes are suitable for welding and conform to the highest industry standards.

Specification of ASTM A53 Pipe

Our ASTM A53 steel pipes come with a comprehensive specification that includes dimensions, production procedures, steel grades, surface coatings, end types, joint methods, and machining services. We offer pipes ranging from NPS 1/8 to NPS 26, processed through open-hearth, basic-oxygen, or electric-furnace methods. With options in carbon, manganese, phosphorus, sulfur, copper, nickel, chromium, molybdenum, and vanadium, we provide seamless or welding processes, ensuring adherence to mechanical properties and hydrostatic tests. Choose UNIASEN for precision and quality, tailored to your specific needs.

  • Standard: ASTM A53
  • Procedure: ERW, SMLS
  • Dimensions: 10.3mm – 660.4mm

                          1/8″ – 26″

                          DN6 – DN650

  • Thickness: 1.65mm – 25.4mm

                       SCH 5S – SCH XXS

  • Unit Length: Single Random 4.88 – 6.71mtrs

                          Double Random — 6.71 – 10.67mtrs”

  • Steel Grade: ASTM A53 GRA, ASTM A53 GRB
  • Surface Coating: Varnishing, Oiling, Hot Dip Galvanizing

                                  FBE, 2PP, 3PP, 2PE, 3PE

  • End Type: Square cut, Plain, Bevelled, Threaded, Grooved
  • Joint Method: Fitting, Flange, Coupling, Clamp, Pipe Shoulder, Welding
  • Pipe Machining: Welding, Bending, Hole Drilling, Punching, Swaging, Tapering, Flaring, Expanding

Dimension of ASTM A53 Pipe

Explore our extensive dimension table for ASTM A53 steel pipes, offering a wide range of sizes and configurations to suit your project requirements. From the nominal wall thickness to the specific diameter, our pipes are designed for coiling, bending, flanging, and more. With UNIASEN, you can find the exact dimensions that fit your application, ensuring efficiency and reliability in your operations. Our expert team is here to guide you in selecting the perfect dimensions for your unique needs.

Steel Pipe Dimensions Chart ANSI B36. 10 & 36.19

Nominal
Pipe Size

Outside
Diameter
(mm)

Nominal Wall Thickness Schedule

NPS

DN

OD

SCH
5

SCH
10

SCH
20

SCH
30

SCH
STD

SCH
40

SCH
60

SCH
XS

SCH
80

SCH
100

SCH
120

SCH
140

SCH
160

SCH
XXS

1/8

6

10.3

–

1.24

–

1.45

1.73

1.73

–

2.41

2.41

–

–

–

–

–

1/4

8

13.7

–

1.65

–

1.85

2.24

2.24

–

3.02

3.02

–

–

–

–

–

3/8

10

17.1

–

1.65

–

1.85

2.31

2.31

–

3.20

3.20

–

–

–

–

–

1/2

15

21.3

1.65

2.11

–

2.41

2.77

2.77

–

3.73

3.73

–

–

–

4.78

7.47

3/4

20

26.7

1.65

2.11

–

2.41

2.87

2.87

–

3.91

3.91

–

–

–

5.56

7.82

1

25

33.4

1.65

2.77

–

2.9

3.38

3.38

–

4.55

4.55

–

–

–

6.35

9.09

1 1/4

32

42.2

1.65

2.77

–

2.97

3.56

3.56

–

4.85

4.85

–

–

–

6.35

9.70

1 1/2

40

48.3

1.65

2.77

–

3.18

3.68

3.68

–

5.08

5.08

–

–

–

7.14

10.15

2

50

60.3

1.65

2.77

–

3.18

3.91

3.91

–

5.54

5.54

–

–

–

8.74

11.07

2 1/2

65

73

2.11

3.05

–

4.78

5.16

5.16

–

7.01

7.01

–

–

–

9.53

14.02

3

80

88.9

2.11

3.05

–

4.78

5.49

5.49

–

7.62

7.62

–

–

–

11.13

15.24

3 1/2

90

101.6

2.11

3.05

–

4.78

5.74

5.74

–

8.08

8.08

–

–

–

–

–

4

100

114.3

2.11

3.05

–

4.78

6.02

6.02

–

8.56

8.56

–

11.13

–

13.49

17.12

5

125

141.3

2.77

3.40

–

–

6.55

6.55

–

9.53

9.53

–

12.70

–

15.88

19.05

6

150

168.3

2.77

3.40

–

–

7.11

7.11

–

10.97

10.97

–

14.27

–

18.26

21.95

8

200

219.1

2.77

3.76

6.35

7.04

8.18

8.18

10.31

12.70

12.70

15.09

18.26

20.62

23.01

22.23

10

250

273.0

3.40

4.19

6.35

7.80

9.27

9.27

12.70

12.70

15.09

18.26

21.44

25.40

28.58

25.40

12

300

323.8

3.96

4.57

6.35

8.38

9.53

10.31

14.27

12.70

17.48

21.44

25.40

28.58

33.32

25.40

14

350

355.6

3.96

6.35

7.92

9.53

9.53

11.13

15.09

12.70

19.05

23.83

27.79

31.75

35.71

–

16

400

406.4

4.19

6.35

7.92

9.53

9.53

12.70

16.66

12.70

21.44

26.19

30.96

36.53

40.49

–

18

450

457

4.19

6.35

7.92

11.13

9.53

14.27

19.05

12.70

23.83

29.36

34.93

39.67

45.24

–

20

500

508

4.78

6.35

9.53

12.70

9.53

15.09

20.62

12.70

26.19

32.54

38.10

44.45

50.01

–

22

550

559

4.78

6.35

9.53

12.70

9.53

–

22.23

12.70

28.58

34.93

41.28

47.63

53.98

–

24

600

610

5.54

6.35

9.53

14.27

9.53

17.48

24.61

12.70

30.96

38.89

46.02

52.37

59.54

–

26

650

660

–

7.92

12.70

–

9.53

–

–

12.70

–

–

–

–

–

–

Chemical Requirement of ASTM A53 Pipe

At UNIASEN, we adhere to stringent chemical requirements for our ASTM A53 steel pipes. Ensuring the perfect balance of carbon, manganese, phosphorus, sulfur, copper, nickel, chromium, molybdenum, and vanadium, our pipes undergo seamless or welding processes. We conduct tension, bend, and flattening tests, along with nondestructive electric tests, to guarantee full compliance with the standard. Trust in our expertise to provide pipes that meet your specific chemical needs, delivering performance and durability.

A53/A53M − Chemical Requirements

Composition, max, %

Grade

Carbon

Manganese

Phosphorus

Sulfur

CopperA

NickelA

ChromiumA

MolybdenumA

VanadiumA

Type S (seamless pipe)

Grade A
Grade B

0.25B
0.30C

0.95
1.20

0.05
0.05

0.045
0.045

0.40
0.40

0.40
0.40

0.40
0.40

0.15
0.15

0.08
0.08

Type E (electric-resistance-welded)

Grade A
Grade B

0.25B
0.30C

0.95
1.20

0.05
0.05

0.045
0.045

0.40
0.40

0.40
0.40

0.40
0.40

0.15
0.15

0.08
0.08

Type F (furnace-welded pipe)

Grades A and B

0.30B

1.2

0.05

0.045

0.4

0.4

0.4

0.15

0.08

A    The total composition for these five elements shall not exceed 1.00 %.

B    For each reduction of 0.01 % below the specified carbon maximum, an increase of 0.06 % of manganese above the specified maximum will be permitted up to a maximum of 1.35 %.

C    For each reduction of 0.01 % below the specified carbon maximum, an increase of 0.06 % of manganese above the specified maximum will be permitted up to a maximum of 1.65 %.

Mechanical Requirement

Your mechanical requirements are our priority at UNIASEN. Our ASTM A53 steel pipes are subjected to rigorous mechanical tests, including tension, bend, and flattening, to ensure adherence to the standard’s mechanical properties. With hydrostatic tests applied without leakage through the weld seam or pipe body, we guarantee that our pipes meet your mechanical demands. Choose UNIASEN for pipes that deliver strength, resilience, and reliability in all your applications.

Tensile Requirements

Mechanical Properties

Grade A

Grade B

Tensile strength, min, psi [MPa]

48 000 [330]

60 000 [415]

Yield strength, min, psi [MPa]

30 000 [205]

35 000 [240]

Elongation in 2 in. or 50 mm

A, B

A, B

The minimum elongation in  2  in.  [50  mm]  shall  be determined  by  the following equation:
e = 625000 [ 1940] A 0.2/U 0.9
Where:
e     =    minimum elongation in 2 in. or 50 mm in percent, rounded to the nearest percent,
A     =    the lesser of 0.75 in.2  [500 mm2] and the cross-sectional area of the
tension test specimen, calculated using the specified outside diameter of
the pipe, or the nominal width of the tension test specimen and the
specified wall thickness of the pipe, with the calculated value
rounded to the nearest 0.01 in.2  [1 mm2], and
U     =    specified minimum tensile strength, psi [MPa].
B        See  Table  X4.1  or  Table  X4.2,  whichever  is  applicable,  for  the  minimum
elongation values that are required for various combinations of tension test specimen size and specified minimum tensile strength.

Steel Grades

UNIASEN offers ASTM A53 steel pipes in two distinct steel grades: Grade A and Grade B. Whether you require Furnace-butt welded continuous Welded Pipe (Type F), Electric Resistance Welded Pipe (Type E), or Seamless Pipe (Type S), our steel grades are crafted to meet your specific needs. With the raw steel generated using open-hearth furnace, electric furnace, or basic-oxygen process, we ensure quality and consistency in every grade. Trust in our expertise to provide the right grade for your project.

Production Tolerance

Precision is paramount at UNIASEN, and our ASTM A53 steel pipes are produced with exacting tolerances. From the dimensions to the chemical composition, we adhere to strict standards, ensuring that every pipe meets your specific requirements. Our production process includes meticulous inspections and tests, giving you the confidence that our pipes will perform to your expectations. Choose UNIASEN for ASTM A53 steel pipes that deliver accuracy, quality, and reliability, every time.

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