Cov khoom
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ASTM A671 EFW Cov Yeeb Nkab Hlau: Cov Lus Qhia Qib Ua Tiav rau Kev Pabcuam Siab Huab Cua thiab Kub Qis
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ASTM A691 1Cr CL22 EFW Cov Yeeb Nkab Hlau: Qib Nkag-Qib Chrome-Moly rau Kev Pabcuam Kub Siab
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ASTM A691 2.25Cr CL22 EFW Cov Yeeb Nkab Hlau rau Kev Pabcuam Kub Siab: Cov Lus Qhia, Kev Vuam thiab Daim Ntawv Thov
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ASTM A671 CC70 CL22 EFW Cov Yeeb Nkab Hlau: Kev Tsim Khoom & Cov Lus Qhia Tshwj Xeeb
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ASTM A691 5Cr CL22 EFW Cov Yeeb Nkab Hlau rau Chaw Tsim Khoom thiab Kev Pabcuam Fais Fab: Cov Lus Qhia, PWHT thiab Daim Ntawv Thov
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ASTM A671 CC65 CL22 EFW Cov Yeeb Nkab Hlau: Kev Tsim Khoom & Cov Lus Qhia Tshwj Xeeb
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ASTM A691 9Cr CL22 EFW Cov Yeeb Nkab Hlau rau Lub Hoobkas Fais Fab thiab Kev Pabcuam Kub Siab: Cov Lus Qhia, PWHT Cov Teeb Meem thiab Cov Ntawv Thov
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ASTM A671 CC60 CL22 EFW Cov Yeeb Nkab Hlau: Kev Tsim Khoom & Cov Lus Qhia Tshwj Xeeb
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ASTM A691 Chrome Moly EFW Cov Yeeb Nkab Hlau: Cov Lus Qhia Qib Ua Tiav rau Kev Pabcuam Kub Siab thiab Siab