Original standard number HGJ 29-1990 HG/T 20676-1990 Brick lining chemical equipment HG/T20676-1990 Standard download decompressio

Original standard number HGJ 28-1990 HG/T 20675-1990 Design code for electrostatic grounding in chemical enterprises HG/T20675-199

HG/T 20670-2000 Chemical and petrochemical pipe rack and pipe pier design regulations (with clause explanation) HG/T20670-2000 sta

This regulation applies to the preparation of chemical equipment design documents. In addition to referring to this regulation, th

This code is to classify the corrosive environment of chemical enterprises according to the severity of the release and the relati

HG/T 20665-1999 Chemical Engineering Buildings and Structures Seismic Fortification Classification Standard (with clause descripti

This regulation applies to the power supply design of newly built or expanded large and medium-sized chemical enterprises or devic

This regulation is applicable to the design of metering, packaging and palletizing systems for bagged chemical powder and granular