Standard |
Size Range |
OD Tolerance |
W.T Tolerance |
Fixed Length Tolerance |
ASTM A 106
Pipes for high
temperature service |
1/8" - 1-½" NB incl.
1-1/2" NB incl.
4" -8 NB incl. |
+ / - 0.40 mm
+ / - 0.80 mm
+1.60 / - 0.80 mm |
-12.5%
(Weight tolerance + 10%, -3.5%)
|
+/ - 5 %
|
ASTM A 179
Seamless Low Carbon
H. E. & Condenser Pipes |
Upto 25.4 mm
25.40 - 38.10 mm incl.
38.10 - 50.8 mm excl. |
+ / - 0.10 mm
+ / - 0.15 mm
+ / - 0.20 mm |
+20 / - 0 %
+20 / - 0 %
+22 / - 0 % |
+3 / - 0 mm
+3 / - 0 mm
+3 / - 0 mm |
ASTM A 192
Seamless Carbon
Steel Boiler Tubes |
50.8 - 63.5 mm excl.
63.5 - 76.2 mm excl.
76.2 - 101.6 mm excl. |
+ / - 0.25 mm
+ / - 0.30 mm
+ / - 0.38 mm |
+22 / - 0 %
+22 / - 0 %
+22 / - 0 % |
+5 / - 0 mm
+5 / - 0 mm
+5 / - 0 mm |
ASTM A 210
Seamless Medium Carbon
Steel Boiler & H.E. Tubes |
|
+0.38 / -0.64 mm
|
+22 / - 0 %
|
+5 / - 0 mm
|
BS 3059
Steel Boiler &
Super Heaterr Tubes
|
Part I CF & Part II S1
Part II S2 |
+ / - 0.5% min.
≥ + / 0.10 mm
+ / - 0.75% min
≥ + / 0.30 mm |
+ / - 7.50%
+ / - 10% |
+3.0 / - mm
Upto to 6 Mtr.
|
DIN 2391
Seamless & Precision
Steel Tubes |
Upto 29.97 mm
29.97 - 40.64 mm
39.98 - 50.01 mm excl. |
+ / - 0.076 mm
+ / - 0.152 mm
+ / - 0.20 mm |
+ / - 10%
+ / - 10%
+ / - 10% |
|
BS 6323 (Part4)
Seamless Tubes
automobiles, mechanical
& general engg. purpose
|
Upto 29.97 mm
31 - 50 mm
51 - 70 mm
71 - 90 mm
91 - 110 mm
111 -130 mm
131 - 160 mm
|
+ / - 0.10 mm
+ / - 0.152 mm
+ / - 0.20 mm
+ / - 0.25 mm
+ / - 0.30 mm
+ / - 0.35 mm
+ / - 0.45 mm
|
+ / - 10%
(Min + / - 0.10 mm)
|
+2 / - 0 mm
(Upto 500 mm)
+ 3 / - 0 mm)
(500 - 2000 mm)
+ 5 / - 0 mm
(2001 - 5000 mm)
+10 / - 0 mm
(5001 - 10000 mm) |
Stainless Steel