---Pipe diameter range:20-350mm
What is polyurethane foam PERT insulation pipe?
Polyurethane PERT insulation pipe is called flexible insulation pipe in international, Chinese standard name is II type heat-resistant polyethylene (PE-RTII) low-temperature direct buried heating pipe.

One-step pert flexible insulation pipe production line process flow:
Pipe unwinding - unwinding traction - V-shaped wheel conveying - track feeding - encapsulation and film coating - Pouring foaming - foam curing -PE layer O-shaped extrusion - Vacuum suction coating - spray cooling - winding

The flexible pre-insulated pipes production line consists of the following components:

1) Production line for inner pressure pipe (PERT, PEX)
2) Inner pipe unwinding device
3) Pipe feeding device
4) Conveyor
5) Pipe centering device
6) Preheating and temperature control
7) Film feeding device
8) High-precision foaming machine
9) Forming machine with temperature control
6) Extruder for casing pipe and water cooling
7) Pull-off device
8) Winding machine

Pipe Structure:
Inner pipe: PE, PE-RT, Steel,PERT-II, PE-Xa
Insulation layer: Polyurethane (PPU)
Outer sheath: HDPE

Advantages of the flexible pre-insulated pipe production line:
1.Substantial cost savings
2.Continuous production method enables long delivery lengths,less pipe ioints
3.Flexible pipes can insulated directly underground and demands smaller excavation
4.Excellent mechanical properties
5.Flexible pipes are easy to transport,handle and storage

Compare between PE-RTII insulation pipe and Ordinary insulation pipe

Picture	Weight/m	Cost of project	Pipe Length
	Light	Low	unlimited
	Weight	High	Fixed-lenghth

Style	Diameter (mm)	Extruder		Extrusion speed Meter	Capacity (Kg/h)	Dimension (m)
Style	Diameter (mm)	Style	Total Power (KW)	Extrusion speed Meter	Capacity (Kg/h)	Dimension (m)
SKRG1200	300-1200	SJ65× 30	230	1-12	320	26× 18× 5.0
SKRG2200	1000-2200	SJ90× 30	380	0.5-5	650	28× 19× 5.0
SKRG3000	1600-3000	SJ90× 30	390	0.3-3	800	48× 26× 6.0

District heating and cooling networks
Residential and commercial building pipelines
Industrial piping systems
Transportation of hot and cold fluids

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Continuous PU Foaming Pert Flexible Insulation Pipe Equipment for Heating Pipeline

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