Polyurethane Spray Foam Preinsulated Pipe Production Line 30-100mm
Brand Name:HUASHIDA
Certification:CE, ISO9001:2008
Model Number:50-1600MM
Minimum Order Quantity:1
Delivery Time:60DAYS
Payment Terms:L/C,D/P,T/T
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Location:
Qingdao Shandong China
Address:
69 Jinsheng Second Road Chengyang District, Qingdao, Shandong, China
Supplier`s last login times:
within 23 hours
Product Details
Company Profile
Product Details
Polyurethane Spray Foam polyethylene Wrapping Preinsulated Pipe Production Line
PU Foaming spary Preinsulation Pipe Continuous Production Line
1. Pipe structure
Our company independently developed the spray winding insulation
pipe production line, which consists of three parts: shot blasting
and rust removal production line, polyurethane spraying production
line, and PE winding production line.
2. Polyurethane spray-wrapped insulated pipe is more efficient than
the traditional "pipe-in-pipe" process.
1. Its production requires no support, preventing thermal bridges
and shortened service life.
2. High-pressure spraying ensures uniform foam density and precise
material application.
3. The outer sheath is wound without internal stress, allowing for
reduced thickness and material savings.
This process not only improves product performance stability but
also significantly reduces the production and operating costs of
heating pipe networks.
3. Technological flow:
(1). Steel pipe rust removal: use a hydraulic lifter to transport the steel pipe to conveying line. The steel pipe rotates and enters the shot blasting chamber. When the internal sensor collects the signal of incoming steel pipe, the shot blasting machine starts to work. The shooting projectiles hits the outer surface of the steel pipe, removing rust and impurities attached to pipe surface, and the steel pipe moves onto the conveying line. After shot blasting treatment, the outer surface of the steel pipe meets the requirements of SA2.5.
(2). Polyurethane spraying: The steel pipe moves forward at a constant speed on rotating wheels. The spraying robot blow foaming materials to form umbrella shaped fog to evenly spray it onto surface of the rotating steel pipe. The polyurethane raw materials foam within a short period of time to achieve the required compressive strength and design thickness. When the insulation layer is very thick, multiple times of spraying can be required.
(3). Polyethylene pipe winding: The steel pipe that has been coated with polyurethane insulation layer rotates and moves along the conveying line. The extruder extrudes a certain thickness of molten polyethylene sheet and winds it on outer surface of the insulation layer. As the insulated steel pipe continues to move forward, the extruder continuously extrudes the molten polyethylene sheet material and wraps it on the surface of the polyurethane layer to form protective layer.
(4). Spray cooling: The semi-finished pipe wrapped with a polyethylene outer protective layer is cooled by an online spraying device. The polyethylene outer protective layer tightly wraps the polyurethane insulation layer on the steel pipe, completing the production of insulated steel pipe.
(5). Tracking and cutting: online track the pipe and cut automatically. When the sensor detects incoming pipe, the control system automatically starts the cutting saw. While the saw blade rotates at high speed, the cutting mechanism performs circumferential cutting around the pipe. Online cutting not only ensures high quality cutting ends, but also ensures the continuity of production and improves production efficiency.
4. Main indices of the composite pipe
| Item | Standard value | Tested value |
| Pipe diameter | DN500-DN1620 | |
| OD contraction rate | <=2% | 1.46 |
| Radial shear strength | ≥0.12(23±2ºC)MPa ≥0.08(140±2ºC)MPa | 0.14 0.09 |
| Shock strength | (-20ºC, 3Kg, hammer falls from 2 meters high) No visible cracks | OK |
| Peak Operating temperature | 140ºC | 150ºC |
| Continuous operating temperature | 120ºC | 140ºC |
| Service life | ≥30 years | OK |
PU Foaming spary Preinsulation Pipe Continuous Production Line
5.. Main line Composition of the polyurethane coating steel preinsulated pipe equipment:
| No. | name |
| 1 | External wall Shot blasting rust removel machine |
| 2 | Medium-frequency induction heating furnace |
| 3 | Polyurethane spray foaming unit |
| 4 | pipe rotator trolley |
| 5 | Single screw extruder and diehead mould |
| 6 | Finished pipe ends trimming machine |
| 7 | pipe Conveyers and racks |
| 8 | Electrical system and PLC |
Rust Removal
PE film jacket wrapping
PE Jacket Water quenching
Qingdao Huashida Machinery Co., Ltd was established in 2003. Since
its inception, Huashida has focused on plastic polyurethane
insulation pipe production line, 3LPE anticorrosion 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 22 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.
Polyurethane Spray Foam Preinsulated Pipe Production Line 30-100mm
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