ASTM A672 Yeeb Nkab
Kev kho cua sov
ASTM A672 Yeeb Nkabyog Standard Specification rau Electric-Fusion-Welded Steel Yeeb Nkab rau High-Pressure Service nyob rau hauv nruab nrab kub.ASTM A672 LSAWpipeline siv cov txheej txheem kub dov uas tuaj yeem ua qauv, quenched, tshuaj tua kab mob, thiab tsim nyog rau cov ntsuas kub thiab lwm yam kev kho cua sov, kev siv LSAW pipeline feem ntau yog siv rau av, offshore roj, roj av, roj thee thiab lwm yam kev sib kis mus ntev.
ASTM A672 piping khoom cov tshuaj muaj pes tsawg leeg suav nrog 0.25 carbon max, 0.98 Manganese, 0.64 molybdenum thiab 0.45 Silicon. Nws tso cai rau qee yam khoom siv xws li Yield Strength (Mpa) 37 thiab Tensile Strength (Mpa) li 65.
TxogASTM A672 L65 kav dejcov khoom siv tshuaj lom neeg yooj yim thiab kev siv, yog tias koj muaj lus nug thov hu rau peb, peb tuaj yeem muab ASTM A672 L65 LSAW pipeline nrog cov khoom zoo thiab cov nqi sib tw, hauv Suav teb.
Chav kawm 10, 11, 12 thiab 13 tsis raug kho kom sov. Tag nrho lwm cov chav kawm yuav tsum tau kho cua sov raws li cov kev ntsuas hauv qab no:
| Kev kho cua sov tsis ua haujlwmA | |||||
| Qib yeeb nkabB | Specification thiab qibC | Tom qab-weld kub kho kub ntau yam degree F (degree) | Normalizing kub, max, degree F (degree) | quenching kub, max, degree F (degree) | Tempering kub, min, degree F (degree) |
| A 45 | A285A | 1100-1250 (590-680) | 1700 (925) | … | … |
| A 50 | A285B | 1100-1250 (590-680) | 1700 (925) | … | … |
| A 55 | A285C | 1100-1250 (590-680) | 1700 (925) | … | … |
| B 60 | A515-60 | 1100-1250 (590-680) | 1750 (950) | … | … |
| B 65 | A515-65 | 1100-1250 (590-680) | 1750 (950) | … | … |
| B 70 | A515-70 | 1100-1250 (590-680) | 1750 (950) | … | … |
| C 55 | A516-55 | 1100-1250 (590-680) | 1700 (925) | 1650 (900) | 1200 (650) |
| C 60 | A516-60 | 1100-1250 (590-680) | 1700 (925) | 1650 (900) | 1200 (650) |
| C 65 | A516-65 | 1100-1250 (590-680) | 1700 (925) | 1650 (900) | 1200 (650) |
| C 70 | A516-70 | 1100-1250 (590-680) | 1700 (925) | 1650 (900) | 1200 (650) |
| D 70 | A537-1 | 1100-1250 (590-680) | 1700 (925) | … | … |
| D 80 | A537-2 | 1100-1250 (590-680) | … | 1650 (900) | 1200 (650) |
| H 75 | A302-A | 1100-1250 (590-680) | 1800 (980) | … | 1100 (590) |
| H 80 | A302-B, C lossis D | 1100-1250 (590-680) | 1800 (980) | … | 1100 (590) |
| J 80 | A533-C11C | 1100-1250 (590-680) | … | 1800 (980) | 1100 (590) |
| J 90 | A533-C12C | 1100-1250 (590-680) | … | 1800 (980) | 1100 (590) |
| J 100 | A533-C13C | 1100-1250 (590-680) | … | 1800 (980) | 1100 (590) |
| K 75 | A202A | 1100-1250 (590-680) | … | … | … |
| K 85 | A202B | 1100-1250 (590-680) | … | … | … |
| L 65 | A204A | 1100-1200 (590-650) | … | … | … |
| L 70 | A204B | 1100-1200 (590-650) | … | … | … |
| L 75 | A204C | 1100-1200 (590-650) | … | … | … |
| N 75 | A299 | 1100-1200 (590-650) | 1700 (925) | … | … |
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AQhov twg ellipses (…) tshwm hauv cov lus no, tsis muaj qhov yuav tsum tau ua. BCov lej qhia qhov tsawg kawg nkaus tensile lub zog hauv ksi. CTxhua qib siv tau. |
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