ASTM A312 i A778
Norma: ASTM A312/A778, ASME B36.19M, ASME B36.10M
Stop: 301,304/304L, 305,316/316L,430,409L (DIN 1.4301,1.4307,1.4401, 1.4404)
ASTM A312 kontra ASTM A778
A778 nadaje się do zastosowań w cienkościennych rurociągach o małych średnicach, a A312 jest stosowany do dużych średnic i wyższych ciśnień
Rury ASTM A778 i A312 są dostępne w harmonogramie 5S, 10S, 40S, 80S, STD i XS o grubości ścianki (WT)
Produkcja A778 jest lepsza w porównaniu do ASTM A312
Specyfikacja ASTM A312/ASTM A778
| Średnica nominalna | Średnica zewnętrzna | Nominalna grubość ścianki | |||
| SCH5S | SCH 10S | SCH 40S | |||
| N.B | Wskaźnik NPS | Mm | Mm | mm | Mm |
| 8 | 1/4 | 13.72 | 2.24 | ||
| 10 | 3/8″ | 17.15 | 2.31 | ||
| 15 | 1/2* | 21.34 | 1.65 | 2.11 | 2.77 |
| 20 | 3/4″ | 26.67 | 1.65 | 2.11 | 2.87 |
| 25 | 1* | 33.4 | 1.65 | 2.77 | 3.38 |
| 32 | 1-1/4″ | 42.16 | 1.65 | 2.77 | 3.56 |
| 40 | 1-1/2″ | 48.26 | 1.65 | 2.77 | 3.68 |
| 50 | 2* | 60.33 | 1.65 | 2.77 | 3.91 |
| 65 | 2-1/2″ | 73.03 | 2.11 | 3.05 | 5.16 |
| 80 | 3* | 88.90 | 2.11 | 3.05 | 5.49 |
| 90 | 3-1/2″ | 101.60 | 2.11 | 3.05 | 5.74 |
| 100 | 4″ | 114.30 | 2.11 | 3.05 | 6.05 |
| 125 | 5* | 141.30 | 2.77 | 3.4 | 6.55 |
| 150 | 6* | 168.28 | 2.77 | 3.4 | 7.11 |
| 200 | 8* | 219.08 | 2.77 | 3.76 | 8.18 |
| 250 | 10* | 273.05 | 3.40 | 4.19 | 9.27 |
| 300 | 12* | 323.85 | 3.96 | 4.57 | 9.52 |
Rura ze stali nierdzewnej o dużej średnicy
Specyfikacja rur spawanych ASTM A312/ASTM A778
| Średnica Nomina | Średnica zewnętrzna | Nominalna grubość ścianki | ||||
| SCH 5S | SCH 10S | SCH 20S | SCH 40S | |||
| (A) | (B) | Mm | Mm | Mm | Mm | Mm |
| 350 | 14 | 355.6 | 3.96 | 4.78 | 7.92 | 11.13 |
| 400 | 16 | 406.4 | 4.19 | 4.78 | 7.92 | 12.7 |
| 450 | 18 | 457.2 | 4.19 | 4.78 | 7.92 | 14.27 |
| 500 | 20 stopni | 508.0 | 4.78 | 5.54 | 9.53 | 15.09 |
| 550 | 22 | 558.8 | 4.78 | 5.54 | 9.53 | 15.09 |
| 600 | 24 | 609.6 | 5.54 | 6.35 | 9.53 | 17.48 |
| 650 | 26 | 660.4 | 5.54 | 7.92 | 12.7 | 17.48 |
| 700 | 28″ | 711.2 | 5.54 | 7.92 | 12.7 | 17.48 |
| 750 | 30 stopni | 762.0 | 6.35 | 7.92 | 12.7 | 17.48 |
| 800 | 32″ | 812.8 | 7.92 | 12.7 | 17.48 | |
| 850 | 34* | 863.6 | 7.92 | 12.7 | 17.48 | |
| 900 | 36 | 914.4 | 7.92 | 12.7 | 19.05 | |
| 1000 | 40 stopni | 1016.0 | 9.53 | |||