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Technical Process
Raw material inspection→pipe surface cleaning→inside sandblast rust removal→outside sandblast/ball-blast rust removal→test→heat up→plastic coating→solidification/curing→final inspection→package and stock
Application Domain
We try hard to develop application domains of plastic coating steel products(plain pipes, corrugated pipes, corrugated plates for culvert, cable tray etc.)
Colliery Suitable for Water Supplying and Drainage, Spray-slurry, Plus & minus pression aeration, Gas drainage, Fire fighting water pipes net.
Municipal engineering Suitable for electric power net, Communication engineering, Water supply for high buildings, Heat supply, Public waterworks, Gas pipes net, Buried pipes etc.
Electric power plant Suitable for Water supply and return pipes, Waste discharge pipes.
Cable tray Suitable for Anti-corrosion, Crush resistance, Exposed cable tray for power, comunication, public construction, Mine, Petroleum, Chemical plant etc.
Fire fighting Excellent suitable for Fire fighting water spray pipes systerm.
Sewage treatment Suitable for Sewage discharge, transportation and sewage treatment pool.
Highway Suitable for Power, Comunication cable protection pipes in High way.
Agriculture Suitable for Irrigation pipes, Deep well pipes, Water drainage pipes etc.
Technic data of Plastic coating steel composite pipes for Coal mine
| Item | Technic requirement | ||
| Appearance | Interior & exterior coating should be smooth, no cracks, pinhole, burs etc. and suitable for use. | ||
| Perpendicularity of top side | Both top side should be cut level off and vertical to axial line. The perpendicularity should be 90°±5° | ||
| Interior/Exterior coating thickness mm | Interior | 0.5～3.0 | |
| Exterior | 0.5～3.0 | ||
| Hydraulic pressure test | Test pressure time not less than 5s, no seepage | ||
| Surface resistance | ≤1*106 Ω | ||
| Alcohol blast burner burn | With flame | Average(s) | ≤3 |
| Max （s） | ≤10 | ||
| Without flame | Average（s） | ≤20 | |
| Max（s） | ≤60 | ||
plastic coated steel pipe, polyethylene coated steel pipe, epoxy coated steel pipe
