Q: Dab tsi yog qhov kev sib txuas seamless yeeb nkab tshwj xeeb rau siab -kev pabcuam kub?
A:ASTM A106 Gr. B. Qhov kev qhia tshwj xeeb no suav nrog seamless carbon steel yeeb nkab rau siab - kev pabcuam kub (xws li, hauv cov chaw tsim hluav taws xob, cov chaw tsim khoom).
Q: Dab tsi yog qhov kev qhia tshwj xeeb rau seamless txias -draw yeeb nkab rau kev siv tshuab?
A:ASTM A519 Cov Lus Qhia Tshwj Xeeb Nws npog seamless carbon thiab alloy steel mechanical tubing, feem ntau siv rau precision qhov chaw, machinery, thiab automotive Cheebtsam.
Q: Dab tsi yog qhov tshwj xeeb tshwj xeeb rau cov kab yeeb nkab siv hauv cov roj thiab cov pa xa hluav taws xob?
A:API 5L. Lub koom haum American Petroleum tus qauv no npog seamless thiab welded steel kab yeeb nkab. Nws suav nrog cov qib zoo li PSL1 thiab PSL2 nrog cov kev cai sib txawv.
Q: Lub npe peb hom API 5L qib.
A:API 5L Gr. B, X42, X52, X60, X65, X70, X80, thiab lwm yam. (Cov qib "X" yog High Strength Low Alloy - HSLA).
Q: "PSL2" txhais li cas hauv API 5L?
A:Product Specification Level 2. Nws imposes stringent chemical, mechanical, and testing requirements (zoo li hardness ntau dua) piv rau PSL1.
