Astm Standard

Specification Allowable outside Diameter Variations in MM Allowable wall Thickness variations Specification Exact length Tolerances In mm Testing
Nominal Diameter Over Under Over % Under % Over % Under %

ASTM A -213
Seamless Boiler Super heater and Heat Exchanger Tubes

 Under 25.4 0.10 0.10 +20 +20 -0 3.17 0 Tension Test
25.4-38.1 Incl. 0.15 0.15 +22 -0 3.17 0 Flattening Test
38.1-50.8 excel. 0.20 0.20 +22 -0 3.17 0 Flare Test
50.8-63.5 excel. 0.25 0.25 +22 -0 3.76 0 Hardness Test
63.5-76.2 excel. 0.30 0.30 +22 -0 4.76 0 100% Hydrostatic Test
76.2-101.6 Incl. 0.38 0.38 -0 4.76 0 Refer to ASTM A - 450

ASTM A -249
Welded Boiler Super heater, Heat Exchanger and Condenser Tubes

 Under 25.4 0.10 0.10 +10 -10 3.17 0

Tension Test
Flattening Test
Flare Test/Flange Test
*Reverse Bend Test
Hardness Test
100% Hydrostatic Test
* Reverse Flattening Test
Refer to ASTM A - 450
*Wherever Applicable
25.4-38.1 Incl. 0.15 0.15 +10 -10 3.17 0
38.1-50.8 excel. 0.20 0.20 +10 -10 3.17 0
50.8-63.5 excel. 0.25 0.25 +10 -10 4.76 0
63.5-76.2 excel. 0.30 0.30 +10 -10 4.76 0
76.2-101.6 Incl. 0.36 0.36 +10 -10 4.76 0

ASTM A-269
Seamless & Welded Tubing for General Service

 Up to 12.7 0.13 0.13 +15 -15 3.2 0

Flare Test
Flange Test (Welded Only)
Hardness Test
Flattening Test, Reverse
Flattening
100% Hydrostatic
12.7-38.1 excl. 0.13 0.13 +10 -10 3.2 0
38.1-88.9 excl. 0.25 0.25 +10 -10 4.8 0
88.9-139.7 excl. 0.38 0.38 +10 -10 4.8 0
139.7-203.2 excl. 0.76 0.76 +10 -10 4.8 0

ASTM A -312
Seamless & Welded Pipe

 13.70-48.3 incl. 0.40 0.79 +12.5 -12.5 6.4 0

Tension Test
Flattening Test
100% Hydrostatic Test Refer to ASTM A-530
48.3-114.3 incl. 0.79 0.79 6.4 0
114.3-220 incl. 1.60 0.79 6.4 0
(Normally Random Lengths Ordered)

ASTM A -554 Mechanical Steel Tubing

Up to 5" 127 mm

0.1 to 0.5

to 0.5

+10

-10

1.6 to 4.88

0

As per Customer Requirement