** 1. Dab tsi yog ASTM A335 khoom siv? **
ASTM A335 yog tus qauv txheem tshwj xeeb rau * seamless ferritic alloy {} kem yeeb nkab rau siab- kub kev pab *. Cov ntaub ntawv no feem ntau tau hu ua "chrome - moly" yeeb nkab vim nws cov chromium thiab molybdenum alloy cov ntsiab lus. Nws yog tsim los ua nyob rau hauv high {{6} h siab thiab siab {} kev xaiv rau cov nroj tsuag muaj zog, thiab lwm yam kev lag luam roj av. Cov kav dej ua rau cov qauv no yog seamless, lub ntsiab lus lawv tau tsim los ntawm cov khoom siv hlau tsis muaj lub zog loj thiab muaj zog dua. Cov qib kawm nyob hauv A335 hauv A335 suav nrog P5, P11, P22, txhua tus uas muaj kev sib txawv thiab qhov kub tsis kam.
** 2. Dab tsi yog AQTM qib sib npaug ntawm S355? **
S355 yog European Txuj Ci (en) qauv txheej txheem txheej txheem hlau, paub txog nws qhov tsawg kawg yog lub zog ntawm 355 MPa. Tsis muaj ib qho, ncaj qha sib npaug nyob rau hauv ASTM system vim tias cov qauv sib txawv. Txawm li cas los xij, qhov ze tshaj plaws thiab feem ntau tau lees txais ovm sib txig rau s355j2 (ib qib nyuaj) yog ** ASTM A572 Qib 50 ** thiab ** AVETM A992 **. Ob qho ntawm cov qib no muaj cov txiaj ntsig tsawg kawg los lub zog ntawm 50 ksi (345 MPa), uas yog qhov ze rau 355 MPa. A992 feem ntau yog cov khoom siv uas nyiam tshaj plaws rau cov qauv dav} cov kab teeb ci (teeb meem) hauv Tebchaws Meskas, thaum qib A572 yog siv rau ntau yam qauv qauv thiab phiaj.
** 3. Dab tsi yog ASTM A325 tus qib steel? **
ASTM A325 yog tus qauv txheem tshwj xeeb rau * high {- Lub Zog Bolts rau cov qauv hlau pob qij txha *. Cov no yog cov qauv Hex hnyav tau hais tias yog "A325 Bolts," tsim los txuas cov tswv cuab txuas nrog cov vaj tse, txuas ntxiv thiab lwm yam qauv. Lawv tau tsim los ntawm cov hlau roj carbon hlau thiab yog cua sov -}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} nrhiav kom ua tiav kom ua tiav lub zog siab tensile lub zog. Nws yog ib qho tseem ceeb kom nco ntsoov tias A325 tus qauv tau raug hloov los ntawm ** F3125 Qib A325 ** tus qauv, uas ua rau muaj ntau lub siab- lub zog kub jolt specifications. Cov bolts no feem ntau yog siv nrog A563 hnyav Hex txiv ntoo thiab tau nruj rau ib qho kev ruaj khov ua ntej (clamping {{{{{{{{}} yam txuas.
** 4. Cov qib ntawm Astm A352 yog dab tsi? **
ASTM A352 yog tus qauv txheem kev cai rau * Hlau castings rau lub siab {}}}}}} kub kev pab *. Qhov no npog cov pa roj carbon thiab qis {{{{{{}} alllo ob lub ntsej muag) uas yuav tsum tau tiv thaiv qis- qhov chaw dej sov. Cov qhab nia raug xaiv nrog ib tsab ntawv "l" rau qhov kub tsawg. Cov qhab nia tseem ceeb suav nrog:
* ** LCA, LCB, LCB, LCC: ** CCBOY STEEL CASTEs nrog kev tshwm sim zoo dua kev cuam tshuam nyuaj ntawm tsawg kub.
* ** LC2, LC2, LC2 {{{{{{4 4}} 1, LC3: ** Tsawg-Alloy hauv LC2, eg, 2.25% hauv LC3)
* ** LCD: ** chromium- molybdenum alloy steel castings rau tsawg- kub kev pabcuam nrog txhim kho lub zog.
** 5. Dab tsi yog astm yeeb nkab qib? **
"Astm yeeb nkab qib" yog cov lus qhia dav dav hais txog cov qauv kev qhia tshwj xeeb nyob rau hauv ib qho qauv tshuaj thiab cov khoom siv me me ntawm cov yeeb nkab. Cov qhab nia no qhia cov yeeb nkab lub zog, tshuaj lom neeg muaj tshuaj lom neeg, thiab haum rau cov ntawv thov sib txawv. Lawv tau txheeb xyuas los ntawm tsab ntawv (feem ntau 'rau cov khoom siv ferrous) thiab tus lej, thiab qee zaum ib qib kev tsim qib. Cov qauv piv txwv suav nrog:
* ** ASTM A53 Qib A53 Qib B: ** Ib qho kev siv hlau roj carbon steel rau cov qauv dav dav thiab qis- cov kav dej.
* ** ASTM A106 qib B: ** Ib qho kev sib tw ntawm cov yeeb nkab steel tsis zoo rau high-} kev pab kub.
* ** ASTM A335 P11, P22, P22, P91: ** Seamless Alloy Steel Kave rau Siab {{{5} {} Siab} Siab Kev Pab Cuam hauv cov nroj tsuag fais fab.
* ** ASTM A312 TP304/3/13 316: ** Austenic Stainless Hlau Kav (piv txwv li, 304, 316) rau Corrosion Kuj.
* ** ASTM A333 Qib 6: ** Seamless thiab Welded Carbon Steel Yeeb Nkab Rau Tsawg- qhov kev pab kub.
* ** ASTM A790 / A 789 2205}}}}}}}}}}: ** Ruplex cov kav hlau loj heev thiab muaj zog ntawm corrosion.
