The HDPE Large Diameter Spiral Corrugated Pipe Making Machine, also known as the Krah Pipe or HDPE Spiral Wound Pipe production line, is designed to manufacture large-caliber spiral drainage pipes with a diameter range of 300-1200mm. These pipes are widely used in municipal sewerage and drainage systems, serving as a modern alternative to traditional cement and cast iron pipes due to their low assembly cost, ease of operation, reliable connections, and economical construction. The pipes offer high ring stiffness, high impact strength, low weight, excellent creep deformation resistance, outer pressure resistance, erosion resistance (against acids, alkalis, salts, etc.), and a long service life of approximately 50 years with no pollution.

The production line consists of two main parts: the PE Pipe Extrusion Line and the Spiral Forming Line.

PE Pipe Extrusion Line Components:
Vacuum Loader: Automatically feeds raw materials into the system.
Hopper Dryer: Dries HDPE material to ensure quality extrusion.
High-Efficiency Single Screw Extruder and Diehead Mould: Extrudes square-shaped HDPE pipes with low energy consumption and low-temperature plastication, suitable for high molecular weight materials. Features a unique screw design with solid-liquid separation and high mix-melting.
Vacuum Calibration Table: Ensures precise pipe dimensions during cooling.
Water Spraying Tank: Further cools the pipe to maintain shape and quality.
Hauling Machine: Pulls the pipe through the production line at a consistent speed.
Spiral Forming Line Components:
High-Efficiency Single Screw Extruder and Diehead: Extrudes melting glue material for bonding.
Spiral Forming Unit: Equipped with an advanced multi-axes transmission box for high transmission force and stable operation. Uses a composite die-head and rotational molding for spiral pipe formation.
Cutting Machine: Cuts pipes to desired lengths using a saw, controlled by an OMRON or MITSUBISHI PLC system with a touch screen interface.
Stacker: Collects and organizes finished pipes.
PLC Controlling System: Features a touch screen interface for automatic, reliable operation, synchronously controlling pipe extrusion, adhesive extrusion, winding, and cutting. Offers high-speed processing, large storage capacity, and dual touch screens for independent control of extruders and the winding unit.

√ Advanced Extrusion Technology
√ Spiral Forming Unit
√ PLC Control System
√ Cutting Precision
√ High-Quality Output

Municipal sewerage and drainage systems
Replacement for traditional cement, cast iron, and other pipes
Applications requiring high durability, corrosion resistance, and cost-effective installation

Qingdao Huashida Machinery Co., Ltd. is a specialized manufacturer engaged in the development and production of plastic pipe machinery, municipal pipe equipment, pipe insulation and anti-corrosion systems, as well as pipe jointing and anti-corrosion materials.

Our main product lines include:

HDPE Jacket Pipe Production Line for Pre-insulated Pipes (Diameter: 110-2000mm)

Rigid Pre-insulated Pipe Production Line

Flexible PERT Pre-insulated Pipe Production Line

Steel Pipe Anti-corrosion Coating Line for FBE, 2LPE, and 3LPE coatings

Steel Pipe Surface Derusting (Shot Blasting) Line

PE Pressure Pipe / Water and Gas Supply Pipe Extrusion Line

PP/PE Plastic Sheet, Board, and Geomembrane Production Line

NBR/PVC Thermal Insulation Tube and Sheet Production Line

Pipeline Anti-corrosion Materials & Tools, including:

○Heat Shrink Joint Coating Sleeves

○Electrofusion Weldable Joint Sleeves

○Portable Plastic Welding Guns (Extruders)

○ PE/PP Welding Rods

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1. company profile

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. 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.

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. Global 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. Core Team

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.