Steel Pipe

STEEL PIPE – ASTM A 53 (A)

Nominal Size Outside Thickness Test Pressure
DN NPS Diameter (mm) (mm) Sch Psi Kg/cm2
20 3/4 26.7 2.87 40 700 49
25 1 33.4 3.38 40 700 49
32 1 1/4 42.2 3.56 40 1200 85
40 1 1/2 48.3 3.68 40 1200 85
50 2 60.3 3.91 40 2300 161
65 2 1/2 73 5.16 40 2500 175
80 3 88.9 3.18 - 1290 91
3.96 - 1600 112
4.78 - 1930 136
5.49 40 2220 156
100 4 114.3 3.18 - 1000 70
3.96 - 1250 88
4.78 - 1500 105
5.56 - 1750 123
6.02 40 1900 134

 

 

STEEL PIPE – BS 1387:1985 Heavy Series (H)

Nominal Size Outside diameter T (mm) Wall Thickness Hydrostatic Test
DN (mm) Thread Size R Max (mm) Min (mm)
Psi BAR
50 2 60.8 59.8 4.5 730 50
65 21/2 76.6 75.4 4.5 730 50
80 3 89.5 88.1 5.0 730 50
100 4 114.9 113.3 5.4 730 50
125 5 140.6 138.7 5.4 730 50
150 6 166.1 164.1 5.4 730 50

BS 1387:1985 Medium Series (M)

Nominal Size Outside diameter T (mm) Wall Thickness Hydrostatic Test
DN (mm) Thread Size R Max (mm) Min (mm)
Psi BAR
20 3/4 27.2 26.6 2.6 730 50
25 1 34.2 33.4 3.2 730 50
32 11/4 42.9 42.1 3.2 730 50
40 11/2 48.8 48 3.2 730 50
50 2 60.8 59.8 3.6 730 50
65 21/2 76.6 75.4 3.6 730 50
80 3 89.5 88.1 4.0 730 50
100 4 114.9 113.3 4.5 730 50
125 5 140.6 138.7 5.0 730 50
150 6 166.1 164.1 5.0 730 50

BS 1387:1985 Light (L)

Nominal Size Outside diameter T (mm) Wall Thickness Hydrostatic Test
DN (mm) Thread Size R Max (mm) Min (mm)
Psi BAR
20 3/4 27.2 26.6 2.3 730 50
25 1 34.2 33.4 2.9 730 50
32 11/4 42.9 42.1 2.9 730 50
40 11/2 48.8 48 2.9 730 50
50 2 60.8 59.8 3.2 730 50
65 21/2 76.6 75.4 3.2 730 50
80 3 88.7 87.9 3.2 730 50
100 4 114.9 113.3 3.6 730 50

STEEL PIPE – BS EN 10255:2004 (E) Heavy Series (H)

Nominal Size Specified outside Outside diameter Wall Thickness Hydrostatic Test
DN Thread Size diameter Max Min
(mm) R (mm) (mm) (mm) T (mm) Psi BAR
50 2 60.3 60.8 59.7 4.5 730 50
65 21/2 76.1 76.6 75.3 4.5 730 50
80 3 88.9 89.5 88 5.0 730 50
100 4 114.3 115 113.1 5.4 730 50
125 5 139.7 140.8 138.5 5.4 730 50
150 6 165.1 166.5 163.9 5.4 730 50

BS EN 10255:2004 (E) Medium Series (M)

Nominal Size Specified outside Outside diameter Wall Thickness Hydrostatic Test
DN Thread Size diameter Max Min
(mm) R (mm) (mm) (mm) T (mm) Psi BAR
20 3/4 26.9 27.3 26.5 2.6 730 50
25 1 33.7 34.2 33.3 3.2 730 50
32 11/4 42.4 42.9 42 3.2 730 50
40 11/2 48.3 48.8 47.9 3.2 730 50
50 2 60.3 60.8 59.7 3.6 730 50
65 21/2 76.1 76.6 75.3 3.6 730 50
80 3 88.9 89.5 88 4.0 730 50
100 4 114.3 115 113.1 4.5 730 50
125 5 139.7 140.8 138.5 5.0 730 50
150 6 165.1 166.5 163.9 5.0 730 50

 

BS EN 10255:2004 (E) Type L

Nominal Size Specified outside Outside diameter Wall Thickness Hydrostatic Test
DN Thread Size diameter Max Min
(mm) R (mm) (mm) (mm) T (mm) Psi BAR
20 3/4 26.9 27.3 26.5 2.3 730 50
25 1 33.7 34.2 33.3 2.9 730 50
32 11/4 42.4 42.9 42 2.9 730 50
40 11/2 48.3 48.8 47.9 2.9 730 50
50 2 60.3 60.8 59.7 3.2 730 50
65 21/2 76.1 76.6 75.3 3.2 730 50
80 3 88.9 89.5 88 3.2 730 50
100 4 114.3 115 113.1 3.6 730 50
125 5 139.7 140.8 138.5 4.5 730 50
150 6 165.1 166.5 163.9 4.5 730 50

BS EN 10255:2004 (E) Type L1

Nominal Size Specified outside Outside diameter Wall Thickness Hydrostatic Test
DN Thread Size diameter Max Min
(mm) R (mm) (mm) (mm) T (mm) Psi BAR
20 3/4 26.9 27.3 26.5 2.3 730 50
25 1 33.7 34.2 33.3 2.9 730 50
32 11/4 42.4 42.9 42 2.9 730 50
40 11/2 48.3 48.8 47.9 2.9 730 50
50 2 60.3 60.8 59.7 3.2 730 50
65 21/2 76.1 76.6 75.3 3.2 730 50
80 3 88.9 89.5 88 3.6 730 50
100 4 114.3 115 113.1 4.0 730 50

BS EN 10255:2004 (E) Type L2

Nominal Size Specified outside Outside diameter Wall Thickness Hydrostatic Test
DN Thread Size diameter Max Min
(mm) R (mm) (mm) (mm) T (mm) Psi BAR
20 3/4 26.9 27.3 26.5 2.3 730 50
25 1 33.7 34.2 33.3 2.6 730 50
32 11/4 42.4 42.9 42 2.6 730 50
40 11/2 48.3 48.8 47.9 2.9 730 50
50 2 60.3 60.8 59.7 2.9 S 50
65 21/2 76.1 76.6 75.3 3.2 730 50
80 3 88.9 89.5 88 3.2 730 50
100 4 114.3 115 113.1 3.6 730 50

 

 

STEEL PIPE – JIS G 3444 STK 290

Nominal Size Outside Diameter (mm) Thickness (mm) Cros Sectional Area cm²
A B
15 1/2 21.7 2.0 1.238
20 3/4 27.2 2.0 1.583
2.3 1.799
25 1 34 2.3 2.291
32 11/4 42.7 2.3 2.919
2.5 3.157
40 11/2 48.6 2.3 3.345
2.5 3.621
2.8 4.029
3.2 4.564
50 2 60.5 2.3 4.205
3.2 5.760
4.0 7.100
65 21/2 76.3 2.8 6.495
3.2 7.349
4.0 9.085
80 3 89.1 2.8 7.591
3.2 8.636
100 4 114.3 3.2 11.17
3.5 12.18
4.5 15.52
125 5 139.8 3.6 15.4
4.0 17.07
4.5 19.13
6.0 25.22
150 6 165.2 4.5 22.72
5.0 25.16
6.0 30.01
7.1 35.26

 

STEEL PIPE – JIS G 3444 STK 400

Nominal Size Outside Diameter (mm) Thickness (mm) Cros Sectional Area cm²
A B
40 11/2 48.6 2.8 4.029
3.2 4.564
50 2 60.5 3.2 5.760
65 21/2 76.3 2.8 6.495
3.2 7.349
80 3 89.1 2.8 7.591
3.2 8.636
100 4 114.3 3.2 11.17
3.5 12.18
125 5 139.8 3.6 15.4
4.0 17.07
4.5 19.13
6 25.22
150 6 165.2 4.5 22.72
5.0 25.16
6.0 30.01
7.1 35.26

 

STEEL PIPE – JIS G 3452 SGP Black And Galvanized Pipe

Nominal Size Outside Diameter (mm) Thickness
(mm)
Test Pressure
A B Psi Kgf/cm2
20 3/4′ 27.2 2.8 365 25
25 1′ 34 3.2 365 25
32 1 1/4” 42.7 3.5 365 25
40 1 1/2″ 48.6 3.5 365 25
50 2′ 60.5 3.8 365 25
65 2 1/2″ 76.3 4.2 365 25
80 3′ 89.1 4.2 365 25
100 4′ 114.3 4.5 365 25
125 5′ 139.8 4.5 365 25
150 6′ 165.2 5.0 365 25

 

 

STEEL PIPE – JIS G 3454 STPG 370

Nominal Size Outside Thickness Test Pressure
DN NPS Diameter (mm) (mm) Sch Bar Kgf/cm2
20 3/4 27.2 2.90 40 59 60
25 1 34 3.40 40 59 60
32 1 1/4 42.7 3.60 40 59 60
40 1 1/2 48.6 3.70 40 59 60
50 2 60.5 3.20 20 34 35
3.90 40 59 60
65 2 1/2 76.3 4.50 20 34 35
5.20 40 59 60
80 3′ 89.1 4.50 20 34 35
5.50 40 59 60
100 4 114.3 4.90 20 34 35
6.00 40 59 60
125 5′ 139.8 5.10 20 34 35
6.60 40 59 60
150 6′ 165.2 5.50 20 34 35
7.10 40 59 60

NOTE : Non standard sizes are available upon request and subject to minimum quantity.

Electrical Resistance Welded Furniture Pipe

Size (inch)
OD (Outside Diameter)
Test Pressure
5/8”
15.8
1.0 ~ 2.0
3/4”
19.1
1.0 ~ 2.0
7/8”
22.2
1.0 ~ 2.0
1”
25.4
1.0 ~ 2.5
1 1/4”
31.8
1.0 ~ 3.0
1 1/2”
38.1
1.0 ~ 3.0
2”
50.8
1.0 ~ 3.0

NOTE : Non standard sizes are available upon request and subject to minimum quantity.

 

Nominal Size Outside Diameter (mm) Thickness (mm) Cros Sectional Area cm²
A B
15 1/2 21.7 2.0 1.238
20 3/4 27.2 2.0 1.583
2.3 1.799
25 1 34 2.3 2.291
32 11/4 42.7 2.3 2.919
2.8 3.510
40 11/2 48.6 2.3 3.345
2.8 4.029
3.2 4.564
50 2 60.5 2.3 4.205
3.2 5.760
4.0 7.100
65 21/2 76.3 2.8 6.465
3.2 7.439
4.0 9.085
80 3 89.1 2.8 7.591
3.2 8.936
4.0 10.690
100 4 114.3 3.2 11.170
3.6 12.520
4.5 15.520
5.6 19.120
125 5 139.8 3.6 15.400
4.0 17.070
4.5 19.130
6.0 25.220
150 6 165.2 4.5 22.720
5.0 25.160
6.0 30.010
7.0 34.790

 

 

ERW Pipe – SNI-07-0068-1987 PKB 41

Nominal Size Outside Diameter (mm) Thickness (mm) Cros Sectional Area cm²
A B
32 11/4′ 42.7 2.8 3.510
40 11/2′ 48.3 2.8 4.029
3.2 4.564
50 2 60.5 2.3 4.205
3.2 5.760
65 21/2 76.3 2.8 6.465
3.2 7.349
80 3 89.1 2.8 7.591
3.2 8.936
100 4 114.3 3.2 11.170
3.6 12.520
125 5 139.8 3.6 15.400
4.0 17.070
4.5 19.130
6.0 23.600
150 6 165.2 4.5 22.720
5.0 25.160
6.0 30.010
7.0 34.790

 

 

SNI – 07 – 0039 – 1987 (Medium) Galvanized Pipe

Nominal Size Outside Diameter (mm) Thickness
(mm)
Test Pressure
A B Max Min Psi Kgf/cm2
20 3/4′ 27.2 26.4 2.7  710  50
25 1′ 34 33.4 3.25 710 50
32 1 1/4” 42.7 42.1 3.25 710 50
40 1 1/2″ 48.6 48.0 3.25 710 50
50 2′ 60.5 59.8 3.65 710 50
65 2 1/2″ 76.3 75.4 3.65 710 50
80 3′ 89.1 88.1 4.05 710 50
100 4′ 114.3 113.3 4.5 710 50
125 5′ 139.8 138.7 4.85 710 50
150 6′ 165.2 164.1 4.9 710 50

 

 

JIS G 3445 – Carbon Steel Tube For Machine Structural Purposes

Nominal Size Designation Chemical Composition % Mechanical Properties
C Max Si Max Mn Max P Max S Max Tensile Test
Flatning Test
(D: Outside Diameter)
Bending Test
Ts Min Ys Min El Min (%) Bending Angle Inside Radius
N/mm2 N/mm2 Test no 12 Test no 5
GRADE 11 A STKM 11 A 0.12 0.35 0.6 0.04 0.04 290 - 35 30 ½ D 180 o 4 D
GRADE 12 A STKM 12 A 0.2 0.35 0.6 0.04 0.04 340 175 35 30 ⅔ D 90 o 6 D
GRADE 12 B STKM 12 B 0.2 0.35 0.6 0.04 0.04 390 275 25 20 ⅔ D 90 o 6 D

Grade Tensile tests for the pipe with thickness less than 8 mm performed with stem test no. 12 or no. 5, the minimum elongation value can be calculated by reducing the elongation is a rate reduction of 1.5% per 1 mm.

Standard Tolerances
Division
Tolerances on Outside Diameter
Division
Tolerances on Wall Thickness
No. 1 Under 50 mm ± 0.5 mm No. 1 Under 4 mm + 0.6 mm
50 mm or over ± 1 % - 0.5 mm
No. 2 Under 50 mm ± 0.25 mm 4 mm or over + 15 %
50 mm or over ± 0.5 % - 12.5 %
Under 25 mm ± 0.12 mm
25 mm or over to and excl. 40 mm ± 0.15 mm
40 mm or over to and excl. 50 mm ± 0.18 mm No. 2 Under 3 mm ± 0.3 mm
50 mm or over to and excl. 60 mm ± 0.2 mm 3 mm or over ± 10 %
No. 3 60 mm or over to and excl. 70 mm ± 0.23 mm
70 mm or over to and excl. 80 mm ± 0.25 mm
80 mm or over to and excl. 90 mm ± 0.3 mm No. 3 Under 2 mm ± 0.15 mm
90 mm or over to and excl. 100 mm ± 0.4 mm 2 mm or over ± 8 %
100 mm or over ± 0.5 mm
Tolerances length 2 ± 2 % (Length mm x 2%)