室内铸铁排水管道安装（Installation of cast iron drainage pipes for indoor use）.doc

室内铸铁排水管道安装（Installation of cast iron drainage pipes for indoor use） The cast iron drainage pipe installation Release date: 2011-12-06 09:29:24 1. material requirements 1.1 cast iron pipes and pipe fittings specifications should comply with the design requirements. The wall thickness of cast iron is uniform and smooth, clean, no Floating sand, sand, sand, but does not allow the blisters, cracks, fly and bumps perversing. Inside and outside the socket pipe diameter and other rules, flat flange interface Is smooth and tight, drain water returning bending buckling distance must be consistent, not biased buckle, buckle, buckle, buckle out other phenomena. 1.2 galvanized carbon steel pipe and pipe fittings galvanized inside and outside wall of uniform, no rust, no fly wall puncture, tube partial buckle, buckle, buckle, disorderly threads can not The whole, are not allowed to view the phenomenon. 1.3, Yau Ma velvetleaf to be neat, a decadent phenomenon is not allowed. Asphalt paint, antirust paint, paint and powder must have factory certification. 1.4 cement with 325 cement, must have a certificate or certificate examination. 1.5 other materials: gasoline, oil, rubber cloth, electric welding rod, steel wire, bolts and nuts, etc.. 2. main equipments 2.1 sets of equipment: wire machine, welding machine, bench drill, impact drill, electric hammer, grinding machine etc.. 2.2 sets of tools: wire plate, hammer, hammer, hand saw, broken tube, chisel, twist drill chisel, hemp, pressure case, table vice, clamp, car etc.. 2.3 others: the level of scale, line sinkers, steel tape, small line etc.. 3. operating conditions 3.1 underground drainage pipeline laying must be based on a wall at or near the elevation of + 0 to the bottom of the tube, the real soil backfill or slightly high, The real heart along the pipeline location no deposit, and the pipeline through the building foundation, has according to the design requirements for good pipe hole. The 3.2 layer drainage pipeline laying