资讯动态
美标阀门用螺栓、螺母材料配对_阀门标准
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螺栓 |
螺母 |
适用范围 |
||
|
标准 |
牌号 |
标准 |
牌号 |
|
|
ASTM A 193 |
B7 |
ASTM A 193 |
2H |
-29～425℃ |
|
B7M |
2HM |
-29～425℃执行NACE标准的抗硫阀 |
||
|
B16 |
7 |
-29～593℃ |
||
|
B8 |
8 |
-196～700℃ |
||
|
B8M |
8M |
|||
|
ASTM A 320 |
L7 |
4 |
-46～101℃低温阀 |
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