Page 64 - 《金属管》总第184期电子杂志
P. 64

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                          GB/T64 79-2013( {-tfl~~fflffi)                 B/TS 163-20180Jiti*ffi)
          •               GB/18984-2016(iEE;~ffi@ffi}                    GB/T 8162-2018(!a~ffi)


                                                                         GB/T5310-2023(~ffii~iPffi)
                          B/T9948-2025(~1m~{-tffi)
                                  40Cr  42CrMo  15CrMoG 12Cr1 MoVG

            20G  20# 45# 27Sim A333/GR.6 A106B/GR.B BN/L245N X52N/L360
   59   60   61   62   63   64   65   66   67   68   69