External 3PE anti-corrosion:
The product adopts a three-layer composite structure: the bottom layer is epoxy powder to achieve anti-corrosion function; The middle layer is an adhesive to enhance the bonding strength between layers. The outer layer is made of polyethylene, which combines mechanical protection and environmental tolerance.



Internal anti-corrosion:
By spraying epoxy paint, taking advantage of its strong adhesion and excellent chemical corrosion resistance, it prevents the oil, gas, water and other media transported inside the steel pipe from corroding.

To meet the anti-corrosion requirements of pipelines, a dual solution of external 3PE composite structure (chemical anti-corrosion + mechanical protection) and internal epoxy coating is adopted: the outer 3PE enhances the anti-corrosion ability through interlayer synergy, while the inner epoxy coating specifically addresses the problem of medium corrosion. The overall solution is highly efficient, durable and has a long service life.

It has been widely applied in fields such as oil transportation, natural gas pipelines, and water supply and drainage pipe networks, effectively ensuring the long-term safe and stable operation of various pipelines.

The anti-corrosion coating processing line includes:
-steel pipe transmission system
-Internal and external shot blasting system
-dust collection system
-pipe heating system
-electrostatic spraying system
-PE coating system
-water cooling system
-end cutting system
-hydraulic and pneumatic system
-testing system
-PLC electronic control system

Upload pipes→pipes screw conveyor→inernal rust removal →external rust removal→ intermediate frequency heating→Internal Epoxy powder coating→External Epoxy powder coating→ outer layer adhesive polyethylene coating→cooling spray→pipes screw conveyor→grinding pipe ends→dowload pipes

√ High-sealing design, energy-saving, cost-reducing and environmentally friendly.
√ The operation is simple and efficient, with a service life of 30 to 50 years.
√ Low-temperature impact resistance and stability, safe and reliable.
√ Internal and external anti-corrosion: The inner wall is resistant to media, while the outer wall is of high strength and low water absorption.
√ PLC intelligent control linkage sensors achieve high-precision production.

1. Pipe diameter: 159-4200mm
2. Processing capacity: ≥250m²/h
3. Cleaning level: ≥Sa2.5
4. Materials for production: epoxy powder, adhesive, polyethylene

Delivery

Exhibition

Certifications

1. Our Factory

Qingdao Huashida Machinery Co., Ltd. is located in Qingdao High & New Technology Industrial Area- Qingdao Huashida industrial Park, covers an area of about 4000 square meters. We have tens of years experience in plastic pipe, sheet, and board extrusion lines, and pipe joints and welding tools such as heat shrinkable sleeve, Electro fusion sleeve etc.

2. Our main products

Our main products include as following,

HDPE PU pre-insulation Jacket Pipe extrusion line

3PE steel pipe anticorrosion&coating machinery

Rubber&plastic foam flexible insulation tube/sheet production line

HDPE water supplying pipe extrusion line

PE PP sheet board extrusion line

Heat shrinkable sleeve production line

Hollow wall spiral pipe production line

Plastic welding rod extrusion line

Radiation cross-linked PE heat shrinkable sleeve

Electro fusion tape

Portable extrusion welder

3. Our products Application.

Our machines make products what are widely used as jacket pipe of PU foam insulation pipe in municipal heating pipe system; Municipal water supplying and drainage pipeline; Oil and gas pipeline; Pipe joints of plastic drainage water pipes, PU foam insulation pipelines, 2PE/3PE oil and gas pipelines;

Besides manufacturing machines, we also make Heat shrinkable sleeves and electro fusion sleeves and plastic welders, which are widely used as pipe joints and sealings of plastic drainage water pipes, PU foam insulation pipelines, 2PE/3PE oil and gas pipelines;

4. Our certificates and Patents

5. Our Purpose and Market

Our purpose is to supply highest cost-effective products and the most suitable solutions to our clients, as well as intimate help and service, on this basis we reach a win-win situation.

For over 14years We have exported to many foreign countries, such as Russia, Iran, Turkey, U. A. E, Sudan, Ukraine, Uzbekistan, Azerbaijan, South Asia, Poland etc.

6. Guarantee and after service

The guarantee period is 12 months from the date of installing, but no more than 14 months from the date of delivery. After this period we are obliged to provide with lifelong service at the expense of Buyer.

During the warranty period we are responsible to provide trouble shootings and help the customer to solve the problems, provide spare parts which are broken, except breakings caused by the Buyer.

We will provide the technical service train the workers from the buyers for free.

We can also send technicians to the buyer's companies abroad for help installation and testing the lines. But the buyer shall pay for the round trip tickets, accommodation, transportation, medicine treatment and insurance of the technicians in foreign countries and some salary accordingly.