Standard:: GB, ASTM, API, GB/T29047-2012, EN253, GB 5310-1995, GB/T 8162-1999, GB/T 9711.1-1997, GB/T 8163-1999, ASTM A106-2006, ASTM A53-2007, API 5L

Grade:: A53(A,B), A106(B,C), 20#, Q235, Q345, API J55, API L80, API K55, API P110, API N80, A53-A369, 10#-45#, Q195-Q345, API J55-API P110

Surface Treatment:: shot blasting

Tolerance:: ±3%

Processing Service:: Bending, Welding, Decoiling, Punching, Cutting

Product:: pre-insulated pipe

Grade of work steel pipe:: 20# and Q235B

Length per pcs:: ususlly 5.8m or 11.8m

Structure:: steel pipe,polyurethane insulation layer ,HDPE outer protection pipe

Expectation of life:: 30 years in 120℃

Application:: heat insulation field/central heating field,anti-corrosive

Diameter:: 25-1600MM

Process of steel pipe:: SML, ERW, SAW

Technique:: SAW

Certification:: CE

Type:: Spiral Welded Pipe

Supply Ability

Supply Ability:: 40000 Meter/Meters per Month

Packaging & Delivery

Products Description

Factory directly sales competitive price polyurethane foam filled insulation steel pipe from China supplier

Structure	Steel pipe-- insulation layer--HDPE outer protection pipe
Steel pipe standard and material	1. GB 20#, Q235B 2. ASTM A53 GrB 3. API Spec 5L 16Mn, X42-X80
Application	1. district heating 2. district cooling 3. crude oil transportation 4.cogeneration project
Specification	DN25-1800mm(1 inch-72 inch)
Medium temperature	Less than 120℃( accidental peak 140 ℃)
Medium pressure	Less than 2.5MPa
Related products	1. The pre-insulated pipe with alarming line 2. Joint materials 3. Insulation fittings

Main Indexs of Pre-insulated Pipe
Product Name	Product Indexes	Reference Standard	Unit	Standard Requirement
Finished product	Steel pipe without thermal 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 years
		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	more than 20MΩ
Outer protection pipe	Density	CJ/T114-4.2.3.1	kg/m3	≥940
		Elongation at break	CJ/T114-4.2.3.4	%	≥350
		Tensile yield stength	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	>1500h free 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		≤1/3 the thickness of insulation layer
Working steel pipe	Seamless steel pipe(≤DN150)	GB8163	20#	Up to standards
Working steel pipe		Spiral steel pipe (≥DN200)	GB/T9711 or SY/T5037	Q235B	Up to standards

Quality control

Use first-class auxiliary materials

"three inspection system" effectively
controls product quality.

The first batch of qualified products through 30 years of aging test in China.

Orange insulation pipe

Composite plastic insulation pipe

Anti-corrosive and insulation pipe

Galvanized iron sheet insulation pipe

Spray and wind insulation pipe

3PE anti-corrosive pipe

Intelligent detection system

HDPE insulation pipe

Insulation fittings

Company Introduction

1.The company's test center successfully approved the review through the CNAS field.

2.In 2015, our company got 4 kinds management system certificates,such as quanity ,enviroment ,HSE,health and safety

3.Up to now, we have services for more than 130 cities and more than 800 projects at home and abroad.

4.For open Europe market, We got CE certificate in 2014

5.For open Middle East market , we are applying EHP certificate from RISE Lab in 2018, still now our insulation layer specifications are meet EN253 request

we have our own lab and invested more than $5000 on various third party tests every year.

Member of National Standards Compilation for insulation
pipe. We participated in the formation of 18 industry standards

OEM &ODM

we have an R&D team, 14 technicians, we can produce according to customer's requirement.

Engineering case

Steam pipeline for underground

Location: Korea

Project demand: 350℃，2.5MPa

Service life: 30 years

Quantity:5864 Meters

Steam project

Location: Russia

Diameter: DN150MM

Project demand: 350℃，1.6MPa

Service life: 30 years
Quantity:1450 Meters

District cooling project

Location: Vietnam

Diameter: DN50-600MM
Project demand: 10℃，1.6MPa
Service life: 30 years
Quantity: 5602Meters

Oil transportation project

Location: Uganda

Diameter: DN65-450MM
Project demand: 60℃，1.6MPa
Service life: 30 years
Quantity: 50000Meters

Chemical material transportation

Location: Korea

Diameter: DN168MM
Project demand: 65℃，smooth inner wall
Quantity: 1600Meters

District cooling project

Location: Cambodia

Project demand: 10℃，1.6MPa

Service life:30 years
Quantity: 3692Meters

FAQ

1: Are you a manufacturer or a trading company?
We are a insulation and anti-corrosive manufacturer which has more than 26 years' history.Lcated in Yutian industry Zone,Tangshan
City, Hebei Province, China.
100KM from Beijing Airport;
110KM from Tianjin Airport;
125KM from Tianjin seaport.

2: How do you control the products' quality?
a. Use good-qualityauxiliary materials
b. Establishing and perfecting supplier examination mechanism.
c. Effectively controls the product quality by implementing the verification method of the "three-inspection system"
d. Chinese people's insurance insured products

3: Can I customize some other sizes of products?
Yes! We can produce according to the customer's request.
We provide OEM/ODM.
If you have any other questions, please don't hesitate, contact us.

4:Can we get a sample? how to pay?
If you need some samples to test, we can make as per your request .You should pay for the transportation freight of samples and our samples cost, while the samples cost can be refundable after you place the order if the amount meets our requirement.

5:Whether your company support Trade Assurance order?
Yes, we can. (100% product quality protection; 100% on-time shipment protection; 100% payment protection)

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