indoor Fire hydrant System pipeline installation process construction organization scheme
1 Scope This process standard is applicable to the installation of indoor hydrant system pipes in civil and general industrial buildings. 2 Construction preparation 2.1 Main materials: 2.1.1 The pipes for the fire hydrant system shall be selected according to the design requirements. Generally, carbon steel pipes or seamless steel pipes shall be used. The pipes shall not be bent, rusted, double skinned or uneven. 2.1.2 The specification and type of fire hydrant box shall meet the design requirements, and the box surface shall be flat and smooth. The metal box shall be free of rust and scratch, and the door shall be opened flexibly. The box is square and complete with accessories. The plug valve is regular in appearance, free of cracks, flexible in opening and closing, tight in closing, intact in sealing filler, and provided with factory certificate. 2.2 Main machines and tools: threading machine, grinding wheel saw, bench drill, electric hammer, hand grinding wheel, hand electric drill, electric welding machine, electric pressure test pump, etc. Threading plate, pipe wrench, bench clamp, pressure clamp, chain clamp, hammer, hacksaw, wrench, nail gun, chain block, electric welding and other tools.
