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1 inch composite plastic pre-insulated pipe
the working pipe can be PP-R, PVC-C, PE-RT.
2 inch underground pre-insulated pipe
Product structure ①Service pipe ②Polyurethane insulation layer ③Polyethylene casing pipe Application range： product application：Heating supply,cooling supply, Anti-corrosion in the field of crude oil delivery, insulation pipeline engineering. medium temperature：≤120℃（Accidental peak＜140℃）。 medium pressure：≤2.5MPa。 laying mode：It is mainly used for direct laying, as well as for trench or overhead laying pipeline. Product Advantages: 1、The mechanical properties of the outer protection pipe are improved. 2、The thickness of the outer protection pipe is reduced. 3、the water absorption of the insulation layer is reduced, 4、The percentage of close area of the insulation layer is improved. 5、The axis eccentricity of insulation pipe is reduced. 6、The uniformity of insulation layer density is improved. 7、The compression strength of the insulation layer is improved. 8、The thermal conductivity of the insulation layer is reduced and the energy loss is reduced. Classic case: Central heating supply: Weifang annual economic zone high temperature hot water pipe project, spray winding pre-insulated directly buried pipe project.
PUR Preinsulated Pipe Monitoring System
● Product Scope：DN50～DN1600mm ● Production Capacity：2000km/a
3pe anti-corrosive pipe
●Product classification：3PE anti-corrosive、2PE anti-corrosive ●Production Scope：DN100mm～DN1000mm ●Usage Area: gas transport ●Production Line：2 ●Production Capability：1000km/year

prefabricated directly buried insulated pipe

●Production Scope：DN20mm～DN1600mm

●Usage area: centre heating,cooling ,heat and power cogeneration project

●Production Line：7
●Production Capability：3000km/year

Color :
balck yellow
Payment :
according to agreement
original region :
China
Lead Time :
10-15days after receiving deposit

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product description

High quality Pre-insulation pipe

Pre-insulated pipe specification

Name	Pre-insulated Pipe
Item NO.	DN400mm
structure	work steel pipe/polyurethane insuation layer /HDPE outer protection pipe
the material of insuation layer	polyurethane foam
dia and thinkness of steel pipe	426*7.0mm
dia and thickness of HDPE pipe	560*8.8mm
Thickness of insulation layer	58.2mm
Installation Method	1.cold installation 2.Prestress Installation 3.Preheat Installation Method 4.One-Time Compensator Installation Method

Main Indexes of Polyurethane insulation layer

indexes	preference Standard	unit	standard requirement
Density	CJ/T114-4.3.2	kg/m3	≥60
Average	CJ/T114-4.3.1	mm	≤0.5
Percentage of close area	CJ/T114-4.3.1	%	≥ 88
Compressive strength	CJ/T114-4.3.3	MPa	≥ 0.3
Water Absorption	CJ/T114-4.3.5	%	Immesion in boiling water 90 minute,bubble water absorption should be not more than 10%
Cavity	CJ/T114-4.3.1		≤ 0.033

Specification of pre-insulated Pipe

steel pipe (mm)		HDPE Pipe(mm)		Thickness of insulation layer
diameter	thickness	diameter	thickness
32	3.0	90	2.5	26.5
45	3.5	110	2.5	30
57	3.5	120	3.0	28.5
76	4.0	140	3.0	28.5
89	4.0	150	3.0	27.5
108	4.5	180	3.0	33
133	4.5	225	3.5	42.5
159	5.0	250	3.9	41.6
219	6.0	315	4.9	43.1
273	6.0	365	5.6	40.4
325	7.0	420	7.0	40.5
377	7.0	500	7.8	53.7
426	7.0	560	8.8	58.2
478	8.0	600	8.8	52.2
529	8.0	655	9.8	53.2
630	8.0	760	11.5	53.5
720	8.0	850	12.0	53
820	10.0	960	14.0	56
920	10.0	1055	14.0	53.5
1020	10.0	1155	14.0	53.5
1120	12.0	1256	14.0	54
1220	12.0	1370	16.0	59
1220	14.0	1370	16.0	59
1420	14.0	1580	16.0	64
1420	16.0	1600	18.0	72

Advantage of the pre-insulated pipe

1.	good insulation properties
2.	low heat loss
3.	heat loss is 25% of the traditional pipe.
4.	energy saving
5.	about 30 yeas move the service life, low cost
6.	has a strong waterproof and corrosive resistance and high mechanical strength
7.	no attached trench ,can be directly buried in the ground or water.