1. ** Dab tsi yog qhov txawv ntawm P22 thiab P91? **
P22 yog chromium-molybdenum alloy steel muaj txog 2.25% chromium thiab 1% molybdenum. Nws muaj zoo-kub lub zog thiab oxidation tiv thaiv piv rau cov hlau hlau. P91 yog qib siab tshaj plaws-Molybdenum-vanadium alloy alloy steels thiab 1% molybdenum, nrog ntxiv ntawm vanadium thiab niobium. P91 muaj ntau lub zog muaj zog, cov plawg siab, thiab oxidation tsis kam muab piv rau P22. Qhov no tso cai rau cov phab ntsa thinner hauv cov tshuab siab / cov tshuab hluav taws xob siab / kub-kub. P91 tseem yuav tsum tau tswj hwm ntau lub sijhawm vuam thiab kev kho cua sov.
2. ** Dab tsi yog qhov txawv ntawm A335 thiab SA335? **
Muaj qhov tsis muaj kev sib txawv ntawm cov khoom siv ntawm ASTM A335 thiab ASME SA335. ASTM A335 yog cov khoom siv tshwj xeeb tsim los ntawm Astm International rau seamless ferritic alloy-steel yeeb nkab rau kev pab kub-steel. ASME SA335 yog ASME BOILER THIAB SIAB RAU LUB HLAU CODE (BPVC) kev txais yuav cov AVTM A335 SPECATION. SA335 suav nrog txhua qhov yuav tsum tau ntawm A335 tab sis tau luam tawm nyob rau hauv Asme code system thiab yog Version * CODE * rau cov khoom siv boilers thiab cov nkoj siab).
3. ** Dab tsi yog qhov txawv ntawm A53 thiab A500 yeeb nkab? **
A53 cov yeeb nkab (ASTM A53) yog tus qauv txheem rau cov yeeb nkab dub thiab kub siv rau cov yeeb nkab thiab cov pa roj av (chav dej, roj, roj av) thiab kev txhawb nqa. A500 Yeeb Nkab (Astm A500) yog tus qauv txheem rau cov roj ntoo txias thiab cov khoom siv seamless rau hauv ntau cov duab (puag ncig, duab plaub, duab plaub, sib dhos, thiab lwm yam). Nws yog tshwj xeeb tsim rau cov ntawv thov qauv tsim (zoo li kev tsim cov thav duab, cov choj) Qhov chaw siab yog qhov tseem ceeb, tab sis nws yog * npaj rau cov ntawv thov nias siab.
4. ** Dab tsi yog qhov tuab ntawm P91 yeeb nkab? **
Tsis muaj ib tus qauv tuab rau P91 cov yeeb nkab. Lub thickness ntawm tus qauv p91 yog txiav txim siab los ntawm cov qauv tsim nyog raws li cov tshuab hluav taws xob uas yuav tsum tau siv rau hauv. P91 yeeb nkab yog tsim nyob rau hauv cov tsheb txheem txheem txheem sib xyaw (zoo li tus qauv 40, 80, 160, xxs) lossis rau kev cai cov phab ntsa thicknesses.
5. ** Dab tsi yog lub siab ntsuas ntawm A500 yeeb? **
ASTM A500 cov qauv tubing ** tsis muaj tus qauv ntsuas siab ". Nws yog tsim thiab tsim tawm rau cov ntawv thov qauv, tsis yog rau kev muaj lub siab sab hauv. Thaum cov khoom siv nws tus kheej muaj cov khoom muaj zog, cov kev cai tshwj xeeb tsis muab cov kev ntsuas ntsuas lossis hydrostatic kev cai. Siv A500 rau cov piping siab yog ** tsis pom zoo thiab tuaj yeem tsis zoo **. Txog cov tshuab nqus tau, kav dej yoog raws li cov lus qhia zoo li ASTM A53, A106, lossis A333 (nyob ntawm lawv, raws li lawv tau sim, thiab muaj kev siab.
