1. Dab tsi yog attm 312 cov khoom siv yeeb nkab?
** ASTM A312 ** yog tus qauv kev qhia tshwj xeeb rau ** Seamless, Welded, thiab ntau txias txias ua haujlwm Austenitic Stainless Hlau Pipes ** npaj rau qhov kev pabcuam kub thiab cov kev pab cuam corrosive. It covers nominal (average) wall and minimum wall pipes in various stainless steel grades (eg, 304, 316, 316L). Cov kav dej no tau siv rau hauv cov ntawv thov uas zoo li kev ua yeeb yam, roj thiab roj av, ua zaub mov, thiab lub zog ua haujlwm thiab lub zog ntawm cov kub.
2. Dab tsi yog qhov sib txawv ntawm Astm A312 thiab 316?
- ** AVEM A312 **: A ** Tus qauv uas tswj hwm kev tsim khoom, qhov ntev, kev xeem, thiab ntawv pov thawj ntawm * Autrenitic Stainless hlau kav *. Nws qhia txog cov tseev kom muaj rau ntau qib (TPP36, TP321, thiab lwm yam).
- ** TSHOOJ ": Ib qho Tseeb ** (tshuaj lom neeg stainless hlau Nws muaj 16-18% chromium, 10-14% npib tsib xee, thiab 2-3% molybdenum rau kev txhim kho corrosion.
** TSEEM CEEB TSHUAJ TAWM ** ASTM A312 yog * cov yeeb nkab specification *, thaum 316 yog ib tug * Cov Khoom Siv Qib * suav nrog ** A312 **).
3. Dab tsi yog ATTM cov qauv rau cov yeeb nkab steel?
ASTM thoob ntiaj teb luam tawm ntau cov qauv rau cov kav dej hlau. Cov uas muaj xws li:
- ** ASTM A53 **: Cov yeeb nkab roj teeb rau cov qauv kev hloov pauv \/ kev siv tshuab.
- ** ASTM A106 **: Seamless Cov Yeeb Nkab Rau Cov Kev Pab Kub Kub Kub.
- ** ASTM A312 **: Austenicial Stainless Hlau Yeeb (raws li saum toj no).
- ** ASTM A335 **: Seamless ferritic alloy-steel yeeb nkab rau kev pab kub-kub.
- ** AVEM A333 **: Seamless \/ Welded Cov Yeeb Nkab Tsawg-Kub Kub-Kub Kub.
- ** ASTM A790 **: Seamless \/ Welded Ferritic \/ Austenitic (Duplex) Stainless Hlau Yeeb Nkab.
4. Dab tsi yog cov lus sib xyaw ntawm Astm A312 TP 316L?
** ASTM A312 TP316L ** LUJ (LUJ%):
- ** Cov pa roj carbon (c) **: tsawg dua lossis sib npaug rau 0. 030%
- ** MANAGUSE (MN) **: tsawg dua lossis sib npaug rau 2. 00%
- ** Phosphorus (p) **: tsawg dua lossis sib npaug ntawm 0. 045%
- ** SENULFUR (s) **: Tsawg dua lossis sib npaug rau 0. 030%
- ** SILICON (SI) ** ** tsawg dua lossis sib npaug rau 0. 75%
- ** chromium (cr) **: 16. 00}} {{{%
- ** Nickel (NI) **: 10. {00}} {{{%
- ** Molybdenum (mo) **: 2. {00}} - {{{%
- ** HLAU (FE) **: Tshuav
* Nco tseg: "L" txhais tau cov pa roj carbon ntau rau kev txhim kho wardability thiab corrosion tsis kam. *
5. Dab tsi yog qhov txawv ntawm 316 thiab 316L?
| ** Khoom **|** 316 **|** 316L ** |
|---------------------|-----------------------|------------------------|
| ** Cov ntsiab lus carbon **|Tsawg dua los yog sib npaug rau {{0}}}. 08%|Tsawg dua los yog sib luag rau ** 0.030% ** |
| ** Corrosion Kuj **|Zoo, tab sis nquag rau * rhiab * (carbide nag lossis daus) thaum vuam|** Superior ** Nyob rau hauv welded \/ txhoj puab vim muaj kev txo cov carbide tsim |
| ** Weldability **|Yuav tsum muaj post-weld annealing rau cov ntawv tseem ceeb|** Zoo **; Tsawg cov pa roj av tiv thaiv cov rhiab heev |
| ** lub zog **|Me ntsis siab dua tensile muaj zog|Me ntsis qis zog lub zog |
| ** Cov ntawv thov **|Kev Siv (Tsis-Welded)|Welded fabriccement, cov tubrog nkoj, tshuaj lom neeg, acidic ib puag ncig |
** TSEEM TAKEWAY **: 316L's carbon-tsawg cov pa roj carbon-tsawg (tsawg dua lossis sib npaug ntawm weld akipitation ntawm welded qauv raug rau corrosive.
