Bend Steel Pipe 3lpe Anticorrosion Coating Machinery for Oil and Gas Pipelines
The external 3PE anti-corrosion production line for bent pipes can complete tasks such as pipe rust removal, epoxy powder spraying, and 3PE winding on bent pipes.
Huashida steel pipe elbow external coating pipe is produced by a process of coating wirh a primer and polyethylene(PE) or polypropylene(PP) layer for small and medium diameter by extruded method, and for large diameter by the spiral wrapping method. Bend Pipe 3PE Coating Equipment is used to bend pipe 3PE coating, it consists of bend pipe transportation equipment, bend pipe blasting machine, bend pipe intermediate frequency heating, bend pipe 3PE coating, bend pipe spraying cooling.
3 layer PE anti-corrosion coating consists of first FBE coating, middle adhesive layer and outer polyethylene layer.
Overall dimension: 20 m X 15 m
Total water consumption: 30 cubic meters
Total power consumption: 450 kilowatts
Total gas consumption: 6 cubic meters/min.
Temperature condition: the temperature inside the workshop is higher than 5 degrees.
The diameter of steel pipe: 426, 630, 720, 820, 1020, 1220, 1420, 1620
Curvature radius: 4-6D
Bending angle: 15-90 degrees.
Steel tube wall thickness: 8 mm -12 mm
Epoxy powder thickness: ≥170 um
AD copolymer adhesive thickness: 170-250 um
PE layer thickness: 2.5 - 3.7 mm
Elbow pipe rust removal equipment Epoxy powder equipment for pipe bending
1. Variable bend pipe conveyor line
Breaking through the overall framework of conventional conveyor lines, a "variable elbow pipe conveyor line" with a fixed anti-corrosion center for bent pipes has been designed, allowing pipes with different elbow pipe diameters, curvature radii, and angles to undergo anti-corrosion operations on the same production line.
2. Precise arc determination technology
Developed precise arc determination technology, using alloy expansion heads to enlarge the diameter of steel pipes and eliminate internal stress during heating deformation. Subsequently, rapid cooling and tempering treatment were carried out to obtain precise curved pipes, overcoming the problem that existing CNC equipment cannot accurately handle springback, elongation, and forming radius.
3. Coaxial winding device for curved pipes
A coaxial winding device for curved pipelines has been designed, which adopts the asynchronous principle of inner and outer shafts and the internal expansion and contraction diameter technology to solve the problem of winding with different diameters rotating at the same line speed, achieving continuous and precise automatic winding.
4. Spray coating technology
Developed Elbow pipe external high-voltage electrostatic spraying technology to achieve automatic electrostatic spraying processing. Effectively improve the uniformity of surface spraying on steel pipes. The surface coating is thin, uniform, and has good glossiness. At the same time, the coating has good adhesion, high hardness, and good corrosion resistance.
5. Sulfide boiling technology
Applied fluidized boiling technology to achieve automatic control of FBE powder heating and melting. Easy to operate, low energy consumption, and stable physical performance.
2PE,3PE and FBE Epoxy coated steel pipe is widely used in pipeline systems for the transmission of oil, gas, water and other fluids. They have high resistance to corrosive from chemicals, moisture, harmful environment, etc.
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