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3lpe Polyethylene Steel Pipe Anticorrosion Coating Processing Line
Description
The epoxy powder is a kind of thermosetting nontoxic coating,
forming the high molecular weight cross-linking structure coating
after solidifying, featuring good chemical anticorrosion and higher
mechanical properties.The function of epoxy-powder bottom layer is
to form continuous coating, providing excellent adhesion by
agglutinating and solidifying the steel tube surface with good
chemical resistance and cathodic disbanding resistance.The function
of polymer adhesive is to agglutinate the epoxy powder before
gelation, and to agglutinate the polyethylene top layer, which
unites all three layers together.The three-layer PE process, with
the epoxy powder coating as bottom layer, binding and bundling
through polyethylene PE and adhesive, is widely used in
anticorrosion of steel pipes at home and abroad, and applied to the
oil pipeline and gas pipeline, as well as to the gas supply and
water supply for civil use.
Note:For the diameters over 1420 mm "FERRUM" S.A.Can make coating
by polyethylene tapes acc.To DIN 30672 class B30, C30 and C50.
N-n, N-v coating with low density polyethylene (LDPE) or medium
density polyethylene (MDPE) with regular n and reinforced v
thickness
S-n, S-v coating with high density polyethylene (HDPE) with regular
n and reinforced v thickness
Anticorrosive coating 3LPE/ 3LPP according to PN-EN ISO 21809-1 is
composed of:
Epoxy layer of minimum 125 μM thickness,
Copolymer layer of minimum 150 μM thickness,
Polyethylene or polypropylene layer from 1,8 mm to 4,7 mm.
Technological processes
Upload pipes→pipes screw conveyor→rust removal of intermediate frequency heating→Epoxy powder coating→outer layer soli quid & polyethylene coating→cooling spray→pipes screw conveyor→grinding pipes, send→unload pipes
Main Equipment List
No. | Name | Set |
A. Derusting Equipment | ||
1 | Pipe-conveying Equipment | 1 |
2 | Shot Blast Cleaning Machine | 1 |
3 | Cyclone Dust Collector | 1 |
4 | Pulse dust collector | 1 |
5 | Centrifugal exhaust fan | 1 |
6 | Rust removal equipment PLC | 1 |
B. Coating equipment | ||
1 | Coating transfer equipment | 1 |
2 | IF heating device | 1 |
3 | Powder spraying device | 1 |
4 | Automatic loading dryer | 2 |
5 | SJ-65/30 Extruder | 1 |
6 | SJ-180/30 Extruder | 1 |
7 | Hot melt adhesive extruder die | 1 |
8 | PE sheet extruder head mold | 1 |
9 | Hot melt adhesive/PE sheet coating device | 1 |
10 | Environmental Protection Ventilation equipment | 1 |
11 | Cooling Spray equipment | 1 |
C.Platform Equipment | ||
1 | Steel pipe platform | 1 |
2 | Post-rust removal transition platform | 1 |
3 | Product tube storage platform | 1 |
4 | Hydraulic Equipment | 3 |
D.Groove Equipment | ||
1 | PE Beveling Machine | 2 |
2 | Hydraulic Lifting and Turning Machinery | 1 |
3 | Hydraulic Equipment | 1 |
4 | PLC | 1 |
E.Compressed air Equipment | ||
1 | Screw Air Compressor | 1 |
2 | Cold dry machine | 1 |
3 | Precision filters | 3 |
4 | Gas tanks | 1 |