Legal analysis: The Code for Design of Town Gas (GB50028-2006) was revised by china municipal engineering North China Design and Research Institute in conjunction with relevant units according to the requirements of the Notice of the Ministry of Construction on Printing and Distributing the Revision Plan of National Standards for Engineering Construction in 2000-2006 (Jian Biao No.87). In the process of revision, the compilation team conducted extensive investigation and study according to the relevant national policies and the actual situation of urban gas in China, carefully summarized the experience of urban gas engineering construction and code implementation in China in the past ten years, absorbed the advanced code achievements of developed countries in the world, carried out necessary special studies and technical discussions, and extensively solicited opinions from relevant units across the country. Finally, the Ministry of Construction and relevant departments reviewed and finalized the draft.

Legal basis: Code for Design of Town Gas (GB50028-2006)

10.2.32 concealed gas pipelines in houses refer to gas pipelines hidden in cabinets, ceilings, pipe trenches and other parts.

10.2.33 in order to facilitate the installation and maintenance of indoor concealed gas pipelines in commercial and industrial enterprises, and to prolong the service life to achieve the purpose of safety and reliability, the provisions put forward laying methods and measures.

10.2.34 indoor horizontal main pipes in civil buildings should not be buried in underground and above-ground concrete layers, mainly for anticorrosion and easy maintenance. Industrial and laboratory gas pipelines can be buried in concrete floor with reference to the provisions of "Building Code" of the former Soviet Union.

10.2.36 The clear distance between electric meters, electrical sockets, power switches and gas pipelines specified in this article is the practical experience of Shanghai and Hong Kong, and others are stipulated in the building codes of the former Soviet Union.

10.2.38 in order to prevent the gas pipeline from being damaged during house settlement, being easily replaced during pipeline maintenance, and the gas pipeline from expanding and contracting with the temperature change due to the indoor temperature change, the provisions stipulate that the gas pipeline must be installed with sleeves when passing through the load-bearing wall, floor or floor.

10.2.39 The purpose of setting the radiation pipe is to purge the air and impurities accumulated in the gas pipeline when the workshop, boiler room and large and medium-sized gas equipment of industrial enterprises are used for the first time or reused after long-term use. When stopping the boiler, if the main valve is improperly closed, the gas leaked into the pipeline can be dispersed through the radiation pipe to avoid accidents when the gas enters the furnace and flue.