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English Translations » 信息处理 » BL3/BL2 are materials specified in YB/T4155, but in material

BL3/BL2 are materials specified in YB/T4155, but in material lists for pipes, the designation used is usually BL3/BL2?

2010-12-07View Original

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This post was last edited by security on 2010-12-7 22:50. BL3/BL2 are materials specified in YB/T4155; however, in the tables detailing pipeline materials, hex head bolts are described as having the material specification BL3/BL2. Why not use BL3 or BL2 to represent it directly? Do they mean bolt and nut respectively?
Reply #22011-01-21
Yes, the first one represents the bolt material, and the second one represents the nut material.

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Translated at 2026-07-24 21:03:59

Original: https://bbs.hcbbs.com/thread-771847-1-1.html

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