标准

  1. Q/SGZGS 314q-sgzgs-314-lid299422
  2. SHIMOMURA SSshimomura-ss-lid299423
  3. SHIMOMURA SSshimomura-ss-lid299424
  4. PN-H-94023pn-h-94023-roll-gorged-rings-madeof-unalloyedand-alloyed-steel
  5. PN-H-74245pn-h-74245-cold-drowningor-rolled-seamless-steel-tubesof-specified-application
  6. PN-H-74246pn-h-74246-seamless-steel-pipes-conctrolled-general-purposes
  7. GB/T 18457gb-t-18457
  8. GB/T 18457gb-t-18457-lid299430
  9. GB/T 18457gb-t-18457-lid299431
  10. GB/T 18457gb-t-18457-lid299432
  11. GB/T 18457gb-t-18457-lid299433
  12. GB/T 18457gb-t-18457-lid299434
  13. CNS H 3166cns-h-3166
  14. CNS H 3166cns-h-3166-lid299436
  15. GB/T 2056gb-t-2056
  16. GB/T 470gb-t-470
  17. GB/T 2056gb-t-2056-lid299439
  18. GB/T 470gb-t-470-lid299440
  19. BDS EN 10088-1bds-en-10088-1-1
  20. BDS EN 10302bds-en-10302