资讯动态
PN160～320螺母_阀门标准
|
钢 号 |
σb |
σs |
δ |
Ψ |
αk |
HB |
备 注 |
|
MPa |
% |
N·m/cm2 |
|||||
|
≥ |
|||||||
|
35 |
540 |
320 |
20 |
45 |
70 |
179~217 |
JB/T 2775 |
|
40Mn |
600 |
360 |
17 |
60 |
187~229 |
||
|
40Cr |
800 |
600 |
15 |
80 |
235~277 |
||
|
25 |
451 |
274 |
23 |
50 |
49 |
149~170 |
中石化 管道器材 |
|
20CrMo |
686 |
490 |
16 |
45 |
78.4 |
197~241 |
|
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