Product Details
foam insulation pipe equipment,HDPE Jacket Extrusion Line
gas/oil /water pipeline Puf Pre-Insulated Pipe PE shell casing
plastic Machinery
The equipment consists of a steel pipe chain conveyor and pipe
assembling table. The conveyor continuously passes the steel pipe
into the PE jacket on the assembling table.
1. Name: HSD-1220# New type circulating double-chain pipe conveyor
and assembling machine.
2. Transmission power: 960r/min 4.0KW.
3. Current: 380V 50HZ three-phase four-wire.
4. Transmission type: cycloid reducer, chain transmission.
5. Lubrication: gear oil, industrial butter.
6. Control: Mechanical
7. Installation requirements: horizontal installation.
8. Appearance size: a total of 4 sections 26x1.3x0.65 (m)
9, can wear Ф219-Ф1220 steel pipe.
Technical Prameters:
| PE-365/760 | PE-420/960 | PE-850/1372 | PE-960/1680 |
Main extruder | SJ-90/33 | SJ-90/33 | SJ-120/33 | SJ-150/33 |
Pipe diameter (mm) | Φ365-960 | Φ420-960 | Φ850-1372 | Φ960-1680 |
capacity (kg/h) | 550-700 | 550-700 | 700-900 | 800-1200 |
Installed power (kw) | 360 | 380 | 440 | 580 |
Length (m) | 35 | 36 | 40 | 48 |
In summary, the Huashida insulation pipe production line represents
the pinnacle of China's industrial innovation and technological
advancement. Its groundbreaking core technologies, innovative
design concepts, and unparalleled production capabilities make it a
force to be reckoned with in the insulation pipe manufacturing sector.
HDPE Jacket Process Flow:
- Vacuum Feeding of PE Granules: The raw PE granules are automatically fed into the system via
vacuum suction.At the initial stage of the plastic pipe production process, raw
polyethylene (PE) granules are efficiently introduced into the
system through a sophisticated vacuum feeding mechanism. This
automated process eliminates manual handling, minimizing the risk
of contamination and ensuring a continuous, uninterrupted flow of
raw material. The vacuum suction creates a powerful force that
draws the PE granules from their storage containers, transporting
them smoothly and precisely into the next stage of the production
line.
- Hot Air Drying: The granules are dried using hot air to remove moisture, ensuring
optimal extrusion quality.To achieve optimal extrusion quality, the PE granules undergo a
critical drying step using hot air. A state-of-the-art hot air
drying system circulates heated air around the granules,
effectively removing moisture and volatile compounds. This
meticulous drying process is crucial as moisture can adversely
affect the melting behavior and ultimate quality of the extruded
plastic. By ensuring that the granules are thoroughly dried, the
subsequent extrusion process is optimized, resulting in pipes with
superior mechanical properties and dimensional stability.
- Extrusion Plasticizing: The dried granules are plasticized through the extruder, heated
and mixed to form a molten plastic mass.The dried PE granules are then fed into the extruder, where they
undergo a rigorous plasticizing process. The extruder, equipped
with a rotating screw and heating elements, gradually heats and
mixes the granules, transforming them into a viscous, molten
plastic mass. This plasticizing phase is highly controlled,
ensuring that the temperature and mixing conditions are precisely
maintained to achieve a uniform and homogeneous melt. The resulting
molten plastic is ready to be shaped into the desired pipe profile.
- Mold Shaping: The molten plastic is shaped into the desired pipe profile by
passing through the extrusion die.
- Vacuum Sizing: The pipe is then subjected to vacuum sizing, adjusting its
dimensions to precise specifications.
- Water Cooling: The pipe is cooled rapidly by immersion in a water tank to
solidify its shape and structure.
- Pulling Out: The solidified pipe is pulled out of the cooling tank at a
controlled speed.
- Cutting: The pipe is cut to the desired length using a precision cutting
machine.
- Carrier Laying-off: The cut pipes are then neatly laid off onto a carrier for further
handling or packaging
Composition of Equipments:
- Hopper Dryer
- Single Screw Extruder
- Extrusion Mould Die
- Head Bracket
- Vacuum Calibration Device
- Water Cooling Tank
- Haul-off Unit
- Planetary Cutting Machine
- Pipe Bracket
- Loader
- PLC (Programmable Logic Controller)
The production steps of the insulation layer for a pre-insulated
pipe, specifically focusing on the polyurethane (PU) foam
insulation, are outlined below in detail:
- Formation of the Casing Structure:
- The steel pipe is first inserted into the high-density polyethylene
(HDPE) outer protection pipe, creating a casing structure.
- Supports are evenly arranged in the annular space between the steel
pipe and the HDPE outer pipe to maintain a uniform distance and
prevent the two pipes from touching directly.
- The two ends of the casing are sealed with flanges to ensure that
the polyurethane foaming material will be contained within the
space during the injection process.
- Preparation of the Steel Pipe Surface:
- Prior to the injection of the insulation material, the surface of
the steel pipe undergoes pre-treatment such as shot blasting or
blast cleaning. This step removes any impurities, rust, or scale,
providing a clean and suitable surface for optimal adhesion of the
polyurethane insulation.
- Additionally, corona treatment of the polyethylene pipe shell's
surface may also be performed to enhance its adhesion properties.
- Injection of Polyurethane Foaming Material:
- The casing structure is hoisted onto a foaming platform
specifically designed for this purpose.
- A high-pressure foaming machine is used to inject the polyurethane
foaming material into the casing. The material expands and fills
the entire annular space between the steel pipe and the HDPE outer
pipe.
Company Profile
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.
