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Steel Pipes - All about Pipes & Tubes

Home » Steel Pipes & Tubes Specifications

Steel Pipes - All about Pipes & Tubes IS: 1161 / 1998 ( Structural Purposes )


Size N.B.
mm & Series
Outside Diameter (mm) Wall Thickness (mm) Weight (kg/mtr.) Plain end Mtr per Ton
15 L 21.30 2.00 0.947 1056
M   2.60 1.21 826
H   3.20 1.44 694
20 L 26.90 2.30 1.38 725
M   2.60 1.56 641
H   3.20 1.87 535
25 L 33.70 2.60 1.98 505
M   3.20 2.41 415
H   4.00 2.93 341
32 L 42.40 2.60 2.54 394
M   3.20 3.10 323
H   4.00 3.79 264
40 L 48.30 2.90 3.23 310
M   3.20 3.56 281
H   4.00 4.37 229
50 L 60.30 2.90 4.08 245
M   3.60 5.03 199
H   4.50 6.19 162
65 L 76.10 3.20 5.71 175
M   3.60 6.42 156
H   4.50 7.93 126
80 L 88.90 3.20 6.72 149
M   4.00 8.36 120
H   4.80 9.90 101
90 L 101.60 3.60 8.70 115
M   4.00 9.63 104
H   4.80 11.50 87
100 L 114.30 3.60 9.75 103
M   4.50 12.20 82
H   5.40 14.50 69
110 L 127.0 4.50 13.60 74
M   4.80 14.50 69
H   5.40 16.20 62
125 L 139.70 4.50 15.0 67
M   4.80 15.9 63
H   5.40 17.9 56
135 L 152.40 4.50 16.4 61
M   4.80 17.5 57
H   5.40 19.6 51
150 L 165.10 4.50 17.8 56
M   4.80 18.9 53
H   5.40 21.3 47
150 L 168.30 4.50 18.2 55
M   4.80 19.4 52
H1
  5.40 21.7 46
H2   6.30 25.2 40
175 L 193.70 4.80 22.4 45
M   5.40 25.1 40
H   5.90 27.3 37
200 L 219.10 4.80 25.4 39
M   5.60 29.5 34
H   5.90 31.0 32
225 H 244.50 5.90 34.70 29
250 H 273.00 5.90 38.90 26
300 H 323.90 6.30 49.30 20
350 H 355.60 8.00 68.60 15

NOTE:
» 1 MPa = 1N/mm2 = 0.102kgf/mm2
» Elongation percent for tubes up to and including 25mm nominal bore for all grades shall be minimum.

TOLERANCES:
A. Outside Diameter
    i) Upto and including
       48.3 mm
± 0.4 mm
- 0.8 mm
B. Thickness (For All Size):
     Welded tubes + Not Ltd.
- 10%
C. Weight:
     Single tubes Light:
     Med & Heavy
     10 Tons Lot Light:
     Med & Heavy

+ 10% - 8%
± 10%
± 5%
± 7.5%
D. Physical Properties
Grade Tensile Strength (Min). Yield Stress (Min.) Elongation on Gauge length 5.65 vS01 Min.
MPa MPa Percent
YSt 210 330 210 20
Yst 240 410 240 17



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