I 团体标准 T/CFA 0102012 — 2021 耐热低合金铁素体球墨铸铁件 Ferritic ductile iron casting with low alloy for heat ...
I 团体标准 T/CFA 0106023 -- 2021 灰铸铁件焊补规范 Specifications for welding and repairing of gray iron castings ...
团体标准 T/CFA 020202031—2021 球形大气压力冒口套 Spherical atmospheric pressure riser sleeve (公告稿) 2021–03–25 ...

