材料类别
Grade of material

Ⅰ

Ⅱ

Ⅲ

使用温度
Applied temperature(T)

-20℃～150℃

-45℃～420℃

-45℃～420℃

零件名称
Part name

壳体（体、盖）
Pump casing (casing, cover)

HT200

ZG230-450

1 Cr13Ni

叶  轮
Impeller

HT200

ZG230-450

1 Cr13Ni

轴
Shaft

45

35CrMo

3Cr13

壳体密封环
Sealing ring of casing

HT250

HT250

1 Cr13MoS

叶轮密封体
　Sealing ring of impeller

QT500

QT500

3Cr13

壳体螺栓
bolt of casing

Q235-A

35CrMo

35CrMo

填料轴套
Shaft sleeve of packing

3Cr13

1Cr13

1 Cr13

机械密封套
Mechanical sealing gland

3Cr13

3Cr13

3Cr13