Comparison of GB and ASME Standards - PSIG
Standards GB 50251 ASME B31.8 Remarks 3.Casing requirement For Class I and II highway and railway 4. Material Follow API 5L with: C < 0.25 % CE < 0.45 % S < 0.035 % P < 0.04 % Follow API 5 L in old revision. Note: Shell follows ISO 3183 in new revision C and CE etc are modified for sour service Suggest to limit carbon content P, S and CE as per ...