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Dikişli ve Dikişsiz Boru İmalat Toleransları (ASTM)
A 269
| Dışçap Outside diameter |
Et Kalınlığı Wall thickness |
|
| (Nominal Dış Çap) Nominal Outside diameter inches (mm) |
Eğilebilirlik Permited deviation inches (mm) |
Eğilebilirlik Permited deviation % |
| < 1/2 ( -12.7) >= 1/2 <1 1/2 ( 12.7 - 38.1) >= 1 1/2 < 3 1/2 ( 38.1 - 88.9) >= 3 1/2 < 5 1/2 ( 88.9 - 139.7) >= 5 1/2 < 8 ( 139.7 - 219.1) | ± 0.005 (0.13) ± 0.005 (0.13) ± 0.010 (0.25) ± 0.015 (0.38) ± 0.030 (0.76) | ± 15 ± 10 ± 10 ± 10 ± 10 |
A 450 - A 249
| Dışçap Outside diameter |
Et Kalınlığı Wall thickness |
|||
| (Nominal Dış Çap)
Nominal outside diameter inches (mm) |
Eğilebilirlik Permited deviation |
Eğilebilirlik Permited deviation % |
||
| (min) Lower inches (mm) |
(max) Upper inches (mm) |
Nom. wall A249 |
Min. wall |
|
| < 1 ( - 25.4) >= 1 <= 1 1/2 (25.4 - 38.1) >1 1/2< 2" (38.1 - 50.8) >=2 < 2 1/2 (50.8 - 63.5) >= 2 1/2< 3 (63.5 - 76.1) >=3 <=4 (76.1 - 101.6) >4 >=7 1/2 (101.6 - 190.5) >7 1/2 <= 9 (190.5 - 228.6) | 0.004 (0.10) 0.006 (0.15) 0.008 (0.20) 0.010 (0.25) 0.012 (0.30) 0.015 (0.38) 0.015 (0.38) 0.015 (0.38) | 0.004 (0.10) 0.006 (0.15) 0.008 (0.20) 0.010 (0.25) 0.012 (0.30) 0.015 (0.38) 0.025 (0.64) 0.045 (1.14) | ± 10 |
+18/-0 |
A 530 - A 778 - A 312
| Dışçap Outside diameter |
Et Kalınlığı Wall thickness |
||
| (Nominal Dış Çap)
Nominal outside diameter NPS (mm) |
Eğilebilirlik Permited deviation |
Eğilebilirlik Permited deviation |
|
| (min) Lower inches (mm) |
(max) Upper inches (mm) |
||
| 1/8" <= 1 1/2" (10.29 - 48.26) > 1 1/2" <= 4" (48.26 - 114.3) >4" <= 8" (114.3 - 219.8) >8" <= 18" (209.08 - 457.2) >18" <= 26" (457.2 - 660.4) >26" <= 34" (660.4 - 863.6) >34" <= 48" (863.6 - 1219.2) | 0.015 (0.4) 0.031 (0.8) 0.062 (1.6) 0.093 (2.4) 0.125 (3.2) 0.156 (4.0) 0.187 (4.8) | 0.031 (0.8) 0.031 (0.8) 0.031 (0.8) 0.031 (0.8) 0.031 (0.8) 0.031 (0.8) 0.031 (0.8) | (+) unspecified (-) 12.5 % |
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