3PE Coating Machine for Steel Pipe 426-820mm with 2.5-3.7mm PE Layer

Hot bending pipe shot blasting and rust removal operation line can clean hot bending pipe (including some section steel and structural parts with reasonable size) at one time. It can not only remove the rust and scale on the surface of the workpiece, but also remove the welding slag on the structural parts. It can also eliminate the welding stress of the workpiece, improve the fatigue strength of the workpiece, obtain a bright surface with a certain roughness, increase the adhesion of the epoxy powder or anti-corrosion coating of the hot bending pipe (or section steel components), and finally achieve the purpose of improving the surface and internal quality.

Basic work condation:
Process parameters of winding anticorrosion:
Production line size: 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.

Elbow conveyor line

Independent center of rotation drive

Gear ring gear drive

frequency control 

The main parts adopt protective supporting wheel

The supporting wheel is equipped with slide rail, which is easy to install

Fixed angle of self-locking structure of transmission line

Height lift adjustment

Medium frequency heating

Angle handwheel adjustment

Front and rear electric adjustment

The height is adjusted through the conveyor line

Narrow thickness to avoid uneven heating in bending section

If power 350kW

Voltage and current double close regulation

Powder spraying for elbow

Annular dusting chamber

Front and rear electric adjustment of powder spraying chamber

The spray gun swings left and right

CNC adjustment of powder quantity

There are 12 powder guns

U-shaped bottom blowback recovery

Overall material 304 stainless steel

The hard negative pressure of recovery air duct does not deform

Powder injection recovery

The drawing air duct is suitable for the change of pipe diameter

Cyclone + filter cartridge dust removal standard discharge

U-shaped bottom structure + pulse back blowing to recover powder more thoroughly

304 stainless steel fluidization tank, vibrating screen powder filter, equipped with 12 venturi powder pumps

Winding machine

Automatic belt locking

One side with corrosion protection

Continuous operation of winding tape

The strip is wound tightly

High degree of automation

Automatic calculation of strip by computer

The deviation of straight pipe from the center does not affect the winding work

PLC control systerm

Data collection

edit

With memory function

Automatic calculation of strip consumption

Automatic acquisition and correction of transmission speed

Variable Conveyor Line - Handles different pipe diameters, radii, and angles on one production line.

Precise Arc Technology - Eliminates internal stress, ensures accurate bending without springback or deformation.

Coaxial Winding Device - Enables continuous, precise winding for pipes with different diameters.

Advanced Spray Coating - Uniform electrostatic spraying with strong adhesion, hardness, and corrosion resistance.

Efficient FBE Heating - Fluidized boiling technology ensures stable melting, low energy use, and reliable performance.

Qingdao Huashida Machinery Co., Ltd was established in 2003. Since its inception, Huashida has focused on plastic polyurethane insulation pipe production line, 3PE anti-corrosion pipe production line, large diameter underground pipe production line and plastic pipe joints for 20 years. We always attach great importance to research and development,collaborating closely with Beijing University of chemical technology, Qingdao university of technology and scientific research institutions. by absorbing advanced technology home and abroad, after 20 years of endeavor we now rank one of the top 3 manufacturers in the industry in China.  Huashida machines have been well received in Saudi Arabia, Kazakhstan, Uzbekistan, United Arab Emirates, Turkey, Russia, etc.

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