主要零件材料 Materials for main parts
零件名稱 Part name | 閥體、閥蓋 Body Bonnet | 閥桿 Stem | 閘板 Wedge gate | 密封面 Sealing face | 閥桿螺母 Yokenut | 填料 Parking | 緊固件 Fastener |
NKZ44H NKZ41H-C型 NKZ944H-C型 NKZ941H | WCB | 2Crl3 | 25 | H:合金鋼 H:alloy steel | 鋁青銅 Albronze | 膨脹復(fù)合石墨 Expanding comDound graphite | 優(yōu)質(zhì)碳鋼 High-grade carbon steel |
NKZ44 NKZ41Y-I型 NKZ944-I型 NKZ941 | 鉻鉬鋼 Cr.Mo steel | 20CrlMo1VA 38CrMoAlA | 鉻鉬鋼 Cr.Mo steel | Y:硬質(zhì)合金 Y:carbide alloy | 鉻鉬鋼 Cr.Mo steel |