文档标签: 材質密度密度SECCSPCC 系统标签: 耐火砖密度柞栎赛璐珞氟塑料尼龙 材質說明密度SECC鍍鋅鋼板7.85SECD7.85CR6無鍍鋅鐵板SGCC熱浸鍍鋅板7.85SPCC冷扎鋼板7.8SPHC生鐵7.85SPCE拉伸用SPTE馬口鐵7.8SPTD鍍鉛鐵板SPTH鍍錫鐵板SUS3017.93SUS3047.93SUS4307.7SUS316白鐵7.8C2680黃銅8.7COPPER8.7C51918.84BRASS青銅C5210P磷青銅...