### 1. Dab tsi yog qhov sib txawv ntawm Astm A790 thiab A928?
Ob qho tib si Astm A790 thiab ASTM A928 npog duplex (ferritic- Austenitic) stainless hlau yeeb nkab hlau. Cov lus sib txawv tseem ceeb hauv kev tsim khoom lag luam.
** ASTM A790 ** TSHWJ XEEB YUAV TSUM TAU RAU * seamless thiab welded * ruplex cov hlau yeeb nkab kev pabcuam. Qhov "Welded" yeeb nkab hauv A790 feem ntau yog hais txog cov kav dej tsim thiab welded tsis siv cov txheej txheem xws li laser lossis hluav taws xob ci ci).
** AVECTM A928 ** TSHWJ XEEB YUAV TSUM TAU RAU DUPLEX Stainless Hlau Yeeb Nkab Ua Los Ntawm Tus * Hluav Taws Xob} Welded * Txheej Txheem nrog kev sib ntxiv ntawm cov tubtawv Hlau. Cov qauv no tshwj xeeb yuav tsum tau hais tias txhua daim ntawv qhia dav dav 100% tshuaj xyuas. Yog li ntawd, A928 yog tus qauv rau filler {{}} mi {}}}}} mi}} mi}} ...- kev sim siab.
### 2. Dab tsi yog Astm A786?
** ASTM A786 ** yog tus qauv kev qhia tshwj xeeb rau * tiaj tus {1} {{2} {- Cov phiaj xwm *. Cov ntaub ntawv no feem ntau yog tsim los ntawm cov qauv- Zoo steel thiab yog siv rau cov ntawv thov hauv pem teb, thiab lwm cov ntawv thov uas yog qhov yuav tsum tau ua. Qhov tshwj xeeb no them rau cov tseev kom muaj rau tus qauv coj los txawv (xws li cov qauv ntoo lossis pob zeb diamond diamond) nyob saum npoo ntawm lub phaj.
### 3. Dab tsi yog astm A890 gr 1b sib npaug?
** AFTM A890 GR 1B ** YOG IB YAM RAU * CASTING, HLAU {}}}}}}}}}}}}}}}}}}}}}}}}} Nws npog ib tsev neeg ntawm Cam Khwb xim stuplex cov qib stainless.
Qhov sib npaug wrought khoom (zoo li phaj, yeeb nkab, lossis bar) rau t29 unt s31803 ** lossis ** ASTM A240 UNT S32205 **. Unrical uncon2205 yog cov tshiab tshiab, laver chemistry version nrog zoo sib xws thiab xeb tsis kam. Yog li ntawd, nws yog ib txwm muaj los hais tias cam khwb cia qib 1b yog qhov sib npaug sib npaug ntawm wrought 2205 duplex stainless hlau.
### 4. Dab tsi yog Attm A928? (Rov qab lo lus nug)
** AVETM A928 ** yog tus qauv kev qhia tshwj xeeb rau * Duplex Stainless Hlau Yeeb Nkab Hluav Taws Xob Fusion Welded Nrog Ntxiv Ntawm Muab Sau Rau Hlau *. Qhov qauv no cov kav npog cov kav dej ua los ntawm duplex (ferritic-}}}}}}}}}}}} pa fusion vuam txheej txheem nrog ntxiv ntawm cov muab cov hlau. Qhov tseem ceeb tshaj plaws ntawm qhov kev qhia tshwj xeeb yog tias txhua daim ntawv thov hluav taws xob ua kom ntseeg tau Weld ncaj ncees, ua rau kev siv daim ntawv thov siab thiab muaj kev pabcuam.
### 5. Dab tsi yog Astm E1592?
** ASTM E1592 ** Puas yog tus qauv xeem cov qauv rau * Cov kev ua tau zoo ntawm cov ntawv hlau vov thiab cov tshuab los ntawm kev sib txawv ntawm cov huab cua phem sib txawv *. Txoj kev ntsuas ntsuas no yog siv los txiav txim siab cov qauv kev ua haujlwm ntawm lub ru tsev thiab nqua lub tshuab, panels, thiab tus neeg muaj nyob hauv cov khaub noom zoo li qub cua tshuab siab. Nws yog feem ntau siv nyob rau hauv kev lag luam thiab kev tsim kho lub peev xwm los tiv thaiv cov cua tshuab hluav taws xob, suav nrog ob qho zoo thiab tsis zoo (Suction) pressures.
