ASTM A268 thiab ASTM A270 yog ob qho qauv muaj txiaj ntsig rau cov hlau stainless tubing, txhua qhov kev pab cuam txawv txawv. ASTM A268 npog seamless thiab werded ferritic cov hlau stainless leeg rau cov kev pabcuam uas dav corrosive. Cov hlab no muaj feem ntau siv nyob rau hauv cov ntawv thov uas muaj kev cuam tshuam ntau dua, xws li tshav kub hluav taws xob, thiab cov khoom noj kom sov hauv ntau qhov txheej txheem roj av. Cov qib raug nyob hauv cov kev qhia tshwj xeeb no suav nrog TP430 thiab TP444. Hauv kev sib piv, Astm A270 yog tus qauv tshwj xeeb rau kev sib khi thiab welded owenenitic stainless hlau qhuav tubing. Tus qauv no tau tsim tshwj xeeb rau cov ntawv thov tau xav tau qib siab tshaj plaws ntawm kev nyiam ua kom huv thiab huv si, cov khoom noj qab zib, dej haus, thiab tshuaj lom neeg muag khoom. Tubes yoog mus rau A270 zoo heev polished sab hauv thaj chaw, hu ua tiav, kom tiv thaiv cov kab mob kev loj hlob thiab cia kom huv. Cov qib kawm nyob hauv A270 nyob rau hauv A270 nrog rau TPP36L. Thaum ob tus qauv tswj hwm tus qauv stainless hlau, tus yuam sij sib txawv nyob hauv lawv lub hom phiaj: A268 yog rau kev pab cuam ncaj ncees rau huv thiab huv si. **
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ASTM A268 |
Txheem Qhov kev qhia tshwj xeeb rau kev sib khi thiab werred ferritic thiab martensitic stainless hlau tubing rau kev pab cuam dav dav |
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ASTM A270 |
Txheem Qhov Tshwj Xeeb Rau Seamless Thiab Welded Austenitic Stainless Hlau Huv Si Tesing |
