Подземная система водяного охлаждения, предварительно сформированная изоляция из полиуретана, 6 дюймов, теплоизоляционная стальная труба из пенополиуретана

Product Overview

Description

underground water cooling system with pu foam thermal heat insulation steel pipe coated by hdpe pipe

Application

1.chilled water and hot water supply;

2.district heating and cooling system;

3.central heating and cooling distribution;

4.crude oil pipeline;

5.heat insulation liquid supply pipeline;

Main Indexes of Pre-insulated pipe
Product Name	Product Indexes	Reference Standard	Unit	Standard Requirement
finished product	steel pipe withou termal insulation layer	CJ/T114-4.4.1	mm	150~250
	increasing rate of HDPE outer protection pipe	CJ/T114-4.4.2	%	≤2
	Axis eccentricity	CJ/T114-4.4.3	mm	see clause 4.4.3
	Expectation of life	CJ/T114-4.4.4.1	year	120℃30 year
	shear strength                   (170℃,1450h after aging)	CJ/T114-4.4.4.2	Mpa	(23±2℃)≥0.12                     (140±2℃)≥0.08
	Shock resistance	CJ/T114-4.4.5	3kg/2m	see clause 4.4.5
	Resistance value between alarm line	CJ/T114-4.4.6	MΩ	2MΩ~∞
outer protection pipe	Density	CJ/T114-4.2.3.1	kg/m³	≥940
	Elongation at braek	CJ/T114-4.2.3.4	%	≥350
	Tensile yield strength	CJ/T114-4.2.3.4	Mpa	≥19
	Longitudinal shrinkage rate	CJ/T114-4.2.3.5	%	≤3
	Long term Mechanical properties	CJ/T114-4.2.3.6	80℃4.0MPa	>1500hfree from damage
	The difference of the melt flow rate	CJ/T114-4.2.3.2	g/10min	≤0.5
	Carbon Black Content	CJ/T114-4.2.3.1	%	2.5±0.5
polyurethane insulation layer	Density	CJ/T114-4.3.2	kg/m³	≥60
	Average pore size	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/T114-4.3.4	%	immersion in boiling water 90 minutes, bubble water absorption should be not more than 10%
	coefficient of thermal conductivity before aging	CJ/T114-4.3.5	W(m.k)	≤0.033
	Cavity	CJ/T114-4.3.1		≤1/3the thickness of insulation layer
working steel pipe	seamless steel pipe (≤DN150)	GB8163	20#	up to standards
	sprial steel pipe(≥DN200)	GB/T9711 or SY/T5037	Q235B	up to standards

products show

our products support any quality test as customer's request! we have got CE, ISO, CNAS certificate.

 

 

         

1: Are you a manufacturer or a trading company?

We are a manufacturer which has  more than   2 0 years' history.

2: Where is your manufacturer? How to visit it?

Our factory located in  Yutian Economic Development Zone ,TangShan , China. A bout 1.5 hours drive time to  Beijing and TianJin airport . Mainly producing pre-insulated pipes, HDPE outer protection pipe and 3PE anti-corrosive pipe.

You can take a plane to Beijing or Tianjin .then we could pick up you at the airport .

3: How do we control our products' quality?

We have professional quality control workers and quality inspection center(CNAS lab)  to control the entire production quality.     

4: How do you transport these products?

We use straps to hoist pre-insulated pipes, it can avoid no damage to our products, no hooks for lifting pipe directly. During the handling process, collision, tossing and more ground drag scrolling are strictly forbidden.

In the process of long distance transport, the pipes should be fixed, and not damage outer protecting pipes and insulating layers.

5: Can I customize some other sizes of products?

Yes! We can according to the customer's request.
If you have any other questions, please don't hesitate, contact us.

Let us begin to communicate immediately  >>> 

 

 

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