Polyethylene tape at the request of the construction?
in the first place is the surface pretreatment of PE tape:
1, with a grinding machine or grinding wheel grinding weld projections and sharp corners.
2, from a spray ( Cast) Peening, to the steel surface before coating corrosion level and descaling grade specified in GB/T8923 Sa2 level or St3 level, and clear the surface dust.
3, but also for primer. Before primer coating, should mix in the container, the rust removal qualified steel pipe coating primer on the surface, make them form a uniform thin film, after being dry primer table, can tie belt. When primer is thick, should join with primer matching thinner.