Report copyright - API 6D 中文-20200629NBR HNBR 24 SG 1 R G WCB 12311 24 SAF 1 R WCB 8 例: 例: A105N LF2 LF3 F11 F22 F5 ASTM Ref A105N A350 Gr.LF2 A350 Gr.LF3 A182 Gr.F11 A182 Gr.F22 A182 Gr.F5 主体材料
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