The price of this song is uncertain, which is related to the installation length, caliber and region. 1. The gas pipeline should be laid along the wall of non-combustible materials. When it meets other pipelines, it should meet the following requirements: when it is laid vertically parallel, the clear distance should not be less than 100mm, and when it is laid outside other pipelines, the clear distance should not be less than 50 mm.. 2. The indoor gas pipe should not pass under the bucket. When crossing is necessary, a casing shall be added, and the diameter of the casing shall be larger than that of the gas pipe. There shall be no interface between the gas pipe and the casing, and both ends of the casing shall extend out of the side of the water bucket by 20 mm.. 3. After the installation of the gas pipeline is completed, a leak test should be conducted, and the test pressure is 300mm water column, and the pressure does not drop to be qualified within 3 minutes. 4. Gas appliances, electric meters and electrical equipment shall be set in a staggered manner, and the horizontal clear distance shall not be less than 500mm. When it is impossible to misplace, thermal insulation protection measures should be taken. 5. Fire prevention measures must be taken when the wall of the gas appliance is made of wood or other flammable materials. 6. The distance between the sides of all kinds of gas appliances and the walls, buckets and doorframes, and the distance between gas appliances and gas appliances shall not be less than 200mm. When two gas appliances or one gas appliance and a water bucket are formed.