** 1. Dab tsi yog astm rau square raj? **
Thawj Astm specification rau square (thiab duab plaub) tubing siv nyob rau hauv cov ntawv thov txheej txheem yog ** astm A500 **. Qhov qauv no coj tus mob txias {{2} Taug kev welded thiab seamless picking carbon hlau tubing hauv round, square, thiab duab plaub. Nws yog qhov tshwj xeeb tshaj plaws rau cov qauv tubing hauv kev tsim kho lub tsev, txuas hniav, thiab lub hom phiaj dav dav. Lwm qhov kev cuam tshuam yog ** astm a501 ** rau kub - tsim welded thiab seamless cov hlau txheem tubing.
** 2. Dab tsi yog qhov sib txawv ntawm A53 thiab A500 Yeeb Nkab? **
ASTM A53 thiab ASTM A500 yog rau cov hom phiaj sib txawv:
* ** ASTM A53 ** yog qhov tshwj xeeb rau ** Yeeb **. Nws yog npaj rau cov ntawv thov siab thiab kev sib xyaw ntawm cov kua thiab roj av (piv txwv li, hauv cov kais dej, hluav taws kub roj av). Nws los hauv welded (hom e, f) thiab seamless (hom s).
* ** ASTM A500 ** YOG IB YAM RAU ECLICATION RAU E ** LUB CEV KHIB **. Nws yog tsim rau load - cov kev siv tshuab (piv txwv li cov thav duab ua txhua yam (kab ntawv, txhawb). Nws los hauv cov roj carbon steel: puag ncig, square, thiab duab plaub.
Tus yuam sij tseem ceeb yog lawv cov kev siv siv (siab thiab cov ntaub ntawv a500 muaj cov duab sensile thiab duab plaub, thaum A53 tsuas yog rau cov yeeb nkab hloov.
** 3. Dab tsi yog lub ntsiab lus ntawm Astm C? **
Nyob rau hauv Astm Naming System, tsab ntawv ** "** ** ** ** ** ** XWB ** CALEMASE, cov khoom siv pob zeb ua vaj tse **. Pab pawg no tsim cov qauv rau cov khoom siv xws li pob zeb ua pob zeb, av nplaum thiab pob zeb, iav, gypsum, thiab rwb thaiv tsev. Piv txwv li, Astm C150 yog rau Portland Maas, thiab Astm C33 yog rau cov pob zeb ua pob.
** 4. Dab tsi yog cov khoom sib npaug ntawm Astm A285 qib C? **
ASTM A285 Qib C yog cov pa hlau phaj rau kev pab cuam nruab nrab thiab qis dua hauv cov hlab ntsha siab. Nws cov ntaub ntawv sib npaug los ntawm lwm cov qauv thoob ntiaj teb yog:
* ** EN 10028-2: P265GH ** (Qhov no yog qhov sib ze heev European sib npaug rau kev siv nkoj siab siv)
* ** JIS G3115: SPV235 ** (Japanese txheem)
* ** DIN 17155: Hii ** (Laus dua German tus qauv, tam sim no ntau superseded los ntawm cov qauv)
** 5. Dab tsi yog ATM qib ntawm haastelloy C? **
"Hastelloy C" yog hais txog ib tse neeg ntawm Nickel {{chromium {}} molybdenum alloys paub txog kev zam corrosion. Tsis muaj ib qho "Astm C" qib; Hloov chaw, muaj ob peb qhov tshwj xeeb antm specifications rau sib txawv txawv nyob rau hauv tsev neeg no. Cov feem ntau muaj yog:
* ** ASTM B574 / ASTM B575 **: Cov no yog thawj cov kev tshwj xeeb rau seamless thiab raj rau "hastellloy c-276" (tsis yog N10276).
* ** ASTM B574 / ASTM B574 / ASTM B575 ** NTXIV NPLOOJ qib nyiam ** "Hastelloy C-22" ** (tsis yog N06022) thiab ** "hastelloy c-2000" ** (tsis yog n06200).
Cov khoom siv yog feem ntau txheeb xyuas los ntawm nws ** tus lej tsis muaj tseeb ** (piv txwv li, N10276 rau C-276) nyob rau Astm tus qauv
