| 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
25.4-38.1 Incl.
38.1-50.8 excel.
50.8-63.5 excel.
63.5-76.2 excel.
76.2-101.6 Incl. |
0.10
0.15
0.20
0.25
0.30
0.38 |
0.10
0.15
0.20
0.25
0.30
0.38 |
+20 +20
+22
+22
+22
+22 |
-0
-0
-0
-0
-0
-0 |
3.17
3.17
3.17
3.76
4.76
4.76 |
0
0
0
0
0
0 |
Tension Test
Flattening Test
Flare Test
Hardness Test
100% Hydrostatic Test
Refer to ASTM A – 450 |
| ASTM A -249
Welded Boiler Super heater, Heat Exchanger and Condenser Tubes |
Under 25.4
25.4-38.1 Incl.
38.1-50.8 excel.
50.8-63.5 excel.
63.5-76.2 excel.
76.2-101.6 Incl. |
0.10
0.15
0.20
0.25
0.30 0.36 |
0.10
0.15
0.20
0.25
0.30 0.36 |
+10
+10
+10
+10
+10
+10 |
-10
-10
-10
-10
-10
-10 |
3.17
3.17
3.17
4.76
4.76
4.76 |
0
0
0
0
0
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 |
| ASTM A-269
Seamless & Welded Tubing for General Service |
Up to 12.7
12.7-38.1 excl.
38.1-88.9 excl.
88.9-139.7 excl.
139.7-203.2 excl. |
0.13
0.13
0.25
0.38
0.76 |
0.13
0.13
0.25
0.38
0.76 |
+15
+10
+10
+10
+10 |
-15
-10
-10
-10
-10 |
3.2
3.2
4.8
4.8
4.8 |
0
0
0
0
0 |
Flare Test
Flange Test (Welded Only)
Hardness Test
Flattening Test, Reverse
Flattening100% Hydrostatic |
| ASTM A -312
Seamless & Welded Pipe |
13.70-48.3 incl.
48.3-114.3 incl.
114.3-220 incl. |
0.40
0.79
1.60 |
0.79
0.79
0.79 |
+12.5 |
-12.5 |
6.4
6.4
6.4 |
0
0
0 |
Tension Test
Flattening Test
100% Hydrostatic Test Refer to ASTM A-530 |
| (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 |
