en 253 standard polyurethane thermal insulation pipe steel pipes

Model:	012
Brand:	HD
Origin:	Made In China
Category:	Construction & Decoration / Heat Insulation
Label:	insulation , polyurethane foam , thermal insulation
Price:	US $24.5 / pc
Min. Order:	10 pc

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Product Description

Diameter sheet

Specifications (mm)	OD ×Thickness (mm)	Outer protection tube diameter ×Wall thickness (mm)	Insulation thickness (mm)	Unit weight Kg/m
32/90	32×2.8	90×2.5	26.5	3
45/110	45×2.8	110×2.5	30.0	4
57/120	57×3.0	120×2.5	29.0	6
60/125	60×3.5	125×3.0	29.5	7
76/140	76×4.0	140×3.0	29.0	9
89/160	89×4.0	160×3.0	32.5	11
108/180	108×4.0	180×3.0	33.0	13
133/200	133×4.5	200×3.2	30.3	17
159/250	159×4.5	250×3.9	41.6	22
219/315	219×6.0	315×4.9	43.1	39
273/365	273×6.0	365×5.6	40.4	49
325/420	325×7.0	420×7.0	40.5	67
377/500	377×7.0	500×7.8	53.7	81
426/560	426×7.0	560×8.8	58.2	94
478/600	478×7.0	600×8.8	52.2	104
529/630	529×7.0	630×9.8	40.7	114
529/655	529×7.0	655×9.8	53.2	117
630/760	630×8.0	760×11.5	53.5	158
720/850	720×8.0	850×12.0	53.0	181
820/960	820×10.0	960×14.0	56.0	252
920/1055	920×10.0	1055×14.0	53.5	281
1020/1155	1020×10.0	1155×14.0	53.5	312
1220/1380	1220×12.0	1380×16.0	64.0	444
1420/1602	1420×14.0	1602×16.0	75.0	590

Structure of polyurethane insulation pipe

Advanced production technique

1. Shot blasting process

Shot blasting treatment is necessary before foaming.

First, this process polished outer surface of the qualified pipes,remove the oxide,dust and oil stain of the pipe surface

Then increase adhesion of the pipe.

Last,It improved the adhensive strength between the polyurethane insulation layer and the pipe.

2.Electric corona treatment process

Electrode corona process carry out the principle of high pressure electrode discharge. To make electric corona treatment for the inner surface of PE pipes.

3.Polyurethane foam

We use PU600 high-pressure foam machine.and its capacity of injection materials reaches 600L/min, pressure of injection material reaches 30MPa.Our polyurethane raw material is from Bayer Company in German.Which is fluorine-free products with best quality. Also it meet all the data of our chinese Ministry of Construction and European standards. , it can continously working under the temperature 148℃ and more than 30 years’s life..

4.Sweating soldering process

Firstly, this process makes the V type welding junction melted.at the same time, Under the pressure of welding machine, it makes the extruded melted PE to be welded tightly on the junction.

5.Hot plate welding process

According to the principle of PE sweating soldering, to preheat the junction of the pipe with different angles on the hot plate. after it reaches the resonable temperature.quickly exert the axial pressure on the pipes to enable the melted pipe orifice be welded perfect.

6.Electric sweating soldering interface process

Through the method of electrical heating, the joint coupling can be used with PE outer protecting pipes, which has high welding strngth, and is applicable for the construction that adopts various laying direct-buried prefabricated insulation pipe joints.

Machanical Property of Polyurethane foam layer

Items	Unit	Technical data	Testing method
Density	Kg/m³	≥60	CJ/T114
Compressive strength	MPa	≥0.3	GB/T12811
Water absorption	%	≤10	GB/T8813
Thermal conductivity	W/m.k	≤0.033	CJ/T114
Hole blind rate	%	≥88	GB/T10297
Heat resistance		140℃ 30 year	GB/T10799
Average pore diameter	mm	≤0.5	CJ/T114

Polyurethane foam machine

Machanical Property of PE Layer

Items	Unit	Reference standard	Performance requirements
Density	Kg/m³	CJ/T114-2000 EN253	≥940 ≥944
Carbon black content	%	CJ/T114-2000 EN253	2.5±0.5
Tensile yield strngth	MPa	CJ/T114-2000 EN253	≥19
Break elongation	%	CJ/T114-2000 EN253	≥350
Longirudinal shrinkage rate	%	CJ/T114-2000 EN253	≤3
Long-term mechanical properties	h	CJ/T114-2000 EN253	≥1500

The main properties of finished tube

Items	Unit	Reference standard	Performance requirements
Increase of external diameter	%	CJ/T114-2000 EN253	≤2
Impact resistance performance		CJ/T114-2000 EN253	No bovious crack on the outer sleeve
Axial shear strength	MPa	CJ/T114-2000 EN253	0.12 (23±2℃) 0.08 (23±2℃)
Exposed section of steel pipe end	mm	CJ/T114-2000 EN253	≥150

Our patent:

Production Progress map

Shipping

Products show

Construction field progress

Certificates

Service

1.Technical service,technical training,technical guidance and technical date are provided freely.

2.Filed service,implement a regular review system,help customers to solve problem in pipeline in time.

3.After sales service,adhearing to the "one-step"work style as our service concept,focus on providing customers with continuous system service.

FAQ

1.Never come here to visit, only by communicate,how to trust our products ?

From our company established, we won hundreds of bidding. which total amount all above $5 million.

2.how to trust our quality of products ?

We established good relationships with our cooperated clients, never received quality complaint from them.

Of course, The Third Party inspection will be welcome.

3.If we have special requirements for the production and material, can you accept ?

Of course,we own our professinal reserch and development group,any special requirements can be communicated. By the way, by experiment ,this group won the patent of pipe fittings tee.