GB/T 38442-2020 General constructions rules of gas burning appliances for domestic use

GB/T 16411-2008 Universal test methods of gas burning appliances for domestic use GB/T 3280-1992 Cold rolled stainless steel sheets and plates GB/T 3280-2007 Cold rolled stainless steel plate, sheet and strip GB/T 3280-2015 Cold rolled stainless steel plate, sheet and strip GB 4806.3-2016 Food Safety National Standards Porcelain Products GB 4806.9-2016 Food Safety National Standards for Metal Materials and Products Used for Food Contact GB 4806.9-2023 National Standard for Food Safety of Metallic Materials and Products for Contact with Food GB 4806.10-2016 National Standards for Food Safety: Coating and Coating for Food Contact GB/T 7306.1-2000 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads—Part 1:Parallel internal and taper external threads GB/T 7306.2-2000 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads—Part 2:Taper internal and external threads GB/T 7307-2001 Pipe threads with 55 degree thread angle where pressure-tight joints are not made on the threads GB/T 12716-2002 Pipe threads with the thread angle of 60 degrees where pressure-tight joints are made on the threads GB/T 12716-2011 Pipe threads with the thread angle of 60 degrees where pressure-tight joints are made on threads GB/T 13611-1992 Classification of town gas GB/T 13611-2006 Classification and essential property of city gas GB/T 13611-2018 Classification and basic characteristics of city gas GB/T 30597-2014 General requirements of safety and control devices for gas burners and gas-burning appliances GB 4806.10-2025 Food Safety National Standards for materials and products used in contact with food, coatings and coatings