??????????????ˉ??|457*20?????ˉ??
| ??ˉ?? |
20G |
GB5310-2008 |
457*10-12-15-18 |
???? |
??? |
| ??ˉ?? |
20G |
GB5310-2008 |
457*20-25 |
???? |
??? |
| ??ˉ?? |
20G |
GB5310-2008 |
530*10-12-14-18 |
???? |
??? |
| ??ˉ?? |
20G |
GB5310-2008 |
530*20-25-30 |
???? |
??? |
| ??ˉ?? |
20G |
GB5310-2008 |
560*10-12-14-16 |
???? |
??? |
| ??ˉ?? |
20G |
GB5310-2008 |
560*18-20-25 |
???? |
??? |
| ??ˉ?? |
20G |
GB5310-2008 |
560*28-30 |
???? |
??? |
20g
????(2008???????Q245??)
????????е???????????ˉ?塣
????g???ˉ???С????????????????g.
??????б????GB713-1997(???????????д?????
???????÷?Χ?????6mm-150mm???塣
?????????????????????????????????????????????????????????????????????????????????????????С???????????????????????????????????????????????????????????,??????????????20#??45#??16MN??Q345??A/B/C/D/E????27SIMN??15CrMO??12Cr1MOV??10CrMO910??304??304L??316??316L??321??P11??P22??P91??T91.??й???GB8162-99?????GB8163-99????????????ù?????????GB3087-99??GB5310-85????????ˉ?ù??GB5312-8???ù??...
???????????0510-88264321??88223334 ???棺0510-88223334 ?????18921237777
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