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Home Products Steel Pipes & Tubes M.S. Pipes International Standard DIN 2440 & DIN 2441 Tolerances

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International Standard DIN 2440 & DIN 2441 Tolerances
Tolerances
Outside diameter                As per the mentioned table
Wall thickness                     -12.5%, + No Limit
                                         
Weight               For single tube                ± 10%
                         For lot of 10 tons             ± 7.5%
 
Bend Test (For Tubes upto & including size DN - 25)
Bending angle Bending radius Position of welding to the direction of bending
90° 3 x O/D of the tube 180° & 90°
 
Bend Test (For Tubes above DN - 25 & upto DN - 50)
Bending angle Bending radius Position of welding to the direction of bending
90° 3.5 x O/D of the tube 180° & 90°
 
Flattening Test (For Tubes above of size DN - 50)
Weld Test                                               Position of Welding to the direction of Bending
Flattening upto 75% of tube dia                             180° & 90°
(without crack in weld)
 
Hydraulic test:                                  100%  hydro testing at 50 bar / online eddy testing
Mass of zinc coating                             400 gm / m² (min)
Zinc layer thickness                              56 (microns)
 
Mechanical Properties
Yield strength  185 N / mm
Tensile strength  310 to 510 N / mn (for wall thickness < 3mm)
180 (18)  290 to 510 N / mn (for wall thickness > 3mm)
Elongation  14% (For thickness > 2 & < 3 mm)
240 (24) 18% (For thickness > 3 & > 4 mm)
 

Tolerance on outside Diameter, Wall Thickness, Weight & Length of Pipe

ASTM Std. A53 Welded Steel Pipes and Seamless Steel Pipes
Available Sizes ( Dimensions and Weights)

NPS Designator Outside Diameter Wall thickness Weight Class Schedule No. Weight
In mm In mm Lb / ft Kg/ft Kg/m
8 8.625 219.1 0.188 4.78 - - 16.94 7.69 25.26
0.203 5.16 - - 18.26 8.29 27.22
0.219 5.56 - - 19.66 8.93 29.28
0.250 6.35 - 20 22.36 10.15 33.31
0.277 7.04 - 30 24.70 11.21 36.31
0.312 7.92 - - 27.70 12.58 41.24
0.322 8.18 STD 40 28.55 12.96 42.55
0.344 8.74 - - 30.42 13.81 45.34
0.375 9.52 - - 33.04 15.00 49.20
0.406 10.31 - 60 35.64 16.18 53.08
0.438 11.13 - - 38.30 17.39 57.08
0.500 12.70 XS 80 43.39 19.70 64.64
0.594 15.09 - 100 50.95 23.13 75.92
0.719 18.26 - 120 60.71 27.56 90.44
0.812 20.62 - 140 67.76 30.76 100.92
0.875 22.22 XXS - 72.42 32.88 107.88
0.906 23.01 - 160 74.69 33.91 111.27

 
Product Range
STEEL PIPES & TUBES
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Conduit Pipes & Tubes

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Square Steel Pipes | Scaffolding Pipes & Tubes | Rectangular Pipes & Tubes | Hollow Sections

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Steel Pipes Manufacturers India - Galvanized Pipes Exporters India - Hot Dipped GI Pipes, Galvanized Pipes - Black Steel Pipes Suppliers India - Scaffolding Pipes Manufacturing India

Corporate Office (Head Office)

G-55,Masjid Moth,
Greater Kailash-III.
New Delhi-110048 (INDIA)

+91-11-41637397, +91-11-29221350

DIRECTOR
Sushil Goyal: +91-9810004581

 

 

Works

A-48/9,Site-IV, Industrial Area,
Sahibabad.
Ghaziabad, UP (INDIA)

+91-120-2896306,  +91-120-2896302