GB/T 4336 Determination of multi-element content in carbon steel and medium and low alloy steel Spark discharge atomic emission spectrometry (conventional method) Amendment No. 1
SY 4118 Technical code for construction of gathering and transmission distributing station projects in highly hydrogen sulfide gas field
SY/T 4119 Technical specifications for the construction of gathering and transportation pipeline projects for gas fields with high hydrogen sulfide content*, 2016-12-05 Update
SY/T 6880-2012 history
2021SY/T 6880-2021 Technical specifications for spectral detection of steel materials in gas fields with high hydrogen sulfide content
2012SY/T 6880-2012 Technical code for spectrometric detection of steel material in high hydrogen sulfide gas field