合金钢+硬质合金 Wedge gate

硬钢 [材] hard steel ; High Steel ; flint steel

钢硬密封陶瓷球阀 FCCV

淬硬钢 [材] Quenched Steel ; Chilled Steel ; hardening steel ; quench hardening steel

钢硬化能带钢 HsteelH

顶硬钢 prehardened steel

特硬钢 Glass-Hard Steel ; Extra Hard Steel ; Adamant Steel

硬化钢 hardening steel ; quenched steel ; hardening g steel

不硬化钢 Armco Steel

钢球硬度 [材] ball hardness