1. Material requirements
1.1 Galvanized steel pipe wall thickness uniform, galvanized layer uniform, no splitting, sand holes, prickles, concave flat, no exfoliation phenomenon, and product certification, as well as inspection report.
1.2 The shape of locking nut (root nut) is intact, the thread is clear and the product is qualified.
1.3 The mouth guard should be intact and non-destructive, with product certificate.
2. Main machinery:
2.1 Pipe Ironing, Hydraulic Pipe Ironing, Hydraulic Opener, Pressure Case, Sleeving Machine, Casing Machine, Flat File, Round File
3. Operating conditions:
3.1 Pipe distribution in cast-in-situ concrete slab shall be coordinated with civil construction according to the dimensions of construction drawings before the upper reinforcement is not tied up after the binding of the bottom reinforcement. With the wall (masonry) to cooperate with the construction riser.
3.2 Wall piping, after the tie-up of civil steel bars, according to the wall line piping.
4. Personnel preparation
Due to various reasons, the main construction stage of the project will always be in the rush period, which requires the installation of construction teams to arrange the construction personnel reasonably, and do not appear inadequate personnel or unclear functions of personnel caused by the underemployment phenomenon.
5. Technical preparation
The technicians of the construction unit must be familiar with the drawings before the construction. They should be familiar with the difficult construction joints in the drawings and think about the measures to solve them in advance. The pipeline path of each system should be planned as a whole, and the phenomenon of multi-layer pipeline overlap should not occur. Understand the construction process, and communicate with the construction team leader in advance in the stage that requires a large number of personnel to adjust.
6. Prefabrication of materials
For the wire cutting of the joint at one end of galvanized steel pipe, the wooden box should be made well in advance for the box which needs to be embedded, and the casing which needs to be embedded should be processed in advance.