HG/T 20635-2009 钢制管法兰、垫片、紧固件选配规定(Class系列)
HG/T 20635-2009.Specification for selection of steel pipe flanges, gaskets and b...
行业标准2023.08.08
HG/T 20635-2009.Specification for selection of steel pipe flanges, gaskets and b...
行业标准2023.08.08
HG/T 20672-2005.Specification for design of urea prilling tower.1总则1.0.1尿素造粒塔既是构...
行业标准2023.08.08
HG/T 20634-2009.Bolting for use with steel pipe flanges(Class designated).1范围HG/...
行业标准2023.08.08
HG/T 20627-2009.Non-metallic flat gaskets for use with steel pipe flanges(Class...
行业标准2023.08.08
HG/T 20698-2009.Code for design of heating ventilation and air conditioning for...
行业标准2023.08.08
HG/T 20623-2009.Large diameter steel pipe flanges(Class designated).1总则1.0.1 HG/...
行业标准2023.08.08
HG/T 20615-2009.Steel pipe flanges(Class designated).1总则1.0.1HG/T 20615规定了钢制管法兰(...
行业标准2023.08.08
HG/T 20614-2009.Specification for selection of steel pipe flanges, gaskets and b...
行业标准2023.08.08
HG/T 20633-2009.Metallic ring joint gaskets for use with steel pipe flanges(Clas...
行业标准2023.08.08
HG/T 20613-2009.Bolting for use with stc:l pipe flanges(PN designated).1范围HG/T 2...
行业标准2023.08.08