5、轴承铬钢

选用GCr15，适用于公称压力小于等于300MPa、温度小于等于300度的超高压阀门中。

用于制作阀杆的材料较多，还有4Cr10Si2Mo马氏体耐热钢、4Cr14Ni14W2Mo奥氏体耐热钢等。

阀杆螺母与阀杆以螺纹相配合，直接承受阀杆轴向力，而且牌与支架等阀件的摩擦之中。因此，阀杆螺母除要有一定的强度外，还要求具有摩擦系数小、不锈蚀、不与阀杆咬死等性能。

台湾佳王CHIA WANG单向顺序阀SVC-03G SVC-06G SVC-10G

台湾佳王CHIA WANG节流阀MTC-02W-20

MTC-02-W-K-20 MTC-02-W1-K-20 MTC-02-A-K-20 MTC-02-A1-K-20 

MTC-02-B-K-20 MTC-02-B1-K-20 MTC-03-W-K-20 MTC-03-W1-K-20 

MTC-03-A-K-20 MTC-03-A1-K-20 MTC-03-B-K-20 MTC-03-B1-K-20

台湾CHIA WANG减压阀（叠加式减压阀）

MBR-02-P1-K-2H-20 MBR-02-P1-K-L-20 MBR-02-P3-K-20 MBR-02-P3-K-2H-20

MBR-02-P1-K-20 MBR-02-P2-K-20 MBR-02-A1-K-20 MBR-02-A2-K-20   MBR-02-A3-K-20

MBR-02-B1-K-20 MBR-02-B2-K-20 MBR-02-B3-K-20 MBR-02-P2-K-L-20 MBR-02-P3-K-L-20

MBR-02-P2-K-20 MBR-02-P1-K-20 MBR-02-P3-K-20 MBR-02-A2-K-20   MBR-02-A1-K-20 

MBR-02-A3-K-20 MBR-02-B2-K-20 MBR-02-B1-K-20 MBR-02-B3-K-20   MBR-03-P2-K-20 

MBR-03-P1-K-20 MBR-03-P3-K-20 MBR-03-A2-K-20 MBR-03-A1-K-20   MBR-03-A3-K-20

MBR-03-B2-K-20 MBR-03-B1-K-20 MBR-03-B3-K-20 MBR-03-P3-K-L-20 MBR-03-P1-K-L-20