Residential construction metal pipe laying

Site processing shall meet the following requirements: In order to prevent cable wear scratches cables, nozzle should be no thorns and sharp edges . To reduce the processing tube straight tube mouth when subsidence shear force on the cable , the mouth should be made ​​of metal pipe flare . After bending metal tube should not have cracks and obvious Hydraulic adapters phenomenon . If the degree of bending is too large, will reduce the effective diameter line pipe , causing difficulty in threading . Metal pipe bending radius of not less than the minimum allowed penetrate the cable bending radius . Galvanized pipe coated with zinc coating anticorrosive paint flaking Department should , in order to increase service life.1 . Metal tube processing requirements.2 . Metal pipe cutting threading : .3 . Metal pipe bending : . 4 . Metal pipe connections :5 . Metal pipe laying :
6 . Dark metal pipe located on the following requirements of the construction