合江鸿远燃气有限公司
Hejiang Hongyuan Gas Co., Ltd
Home
About
Cases
Culture
Blog
Contact
Hotline
86-17313496841
Company News
Industry News
Article 1: In order to standardize the construction and operational management of rural piped natural gas projects (hereinafter referred to as “rural gas”) and to ensure the safety of rural gas supply and consumption, these Guidelines are hereby formulated.
Aug 14,2025
This standard specifies the terms and definitions, general provisions, basic requirements, pipeline gas supply services, bottled gas supply services, vehicle‑mounted gas supply services, and service quality evaluation for gas services.
The “Standard for Construction and Acceptance of Urban Gas Transmission and Distribution Projects” is hereby approved as a national standard, designated GB/T 51455-2023, and shall come into force on September 1, 2023. The former industry standard, “Code for Construction and Acceptance of Urban Gas Transmission and Distribution Projects,” CJJ 33-2005, is hereby repealed.
This document specifies the classification, specifications and model designations, appearance, structure and dimensions, performance requirements, test methods, inspection rules, marking and instruction manuals, as well as packaging, transportation, and storage for rubber composite flexible hoses intended for connecting gas appliances.
This document specifies the classification, specifications and model designations, materials, appearance, structure and dimensions, performance requirements, test methods, inspection rules, marking and installation/operating instructions, as well as packaging, transportation, and storage for metal‑sheathed flexible hoses used for connecting gas appliances.
In accordance with the requirements of the Ministry of Housing and Urban–Rural Development’s Notice on Issuing the “2009 Plan for the Formulation and Revision of Engineering Construction Standards and Specifications” (Jianbiao [2009] No. 88), the drafting group, after conducting extensive surveys and research, carefully summarizing practical experience, and referencing relevant international standards and advanced foreign standards, has prepared this code based on broad solicitation of opinions.
Thank you for your attention. Please feel free to share your thoughts and suggestions!