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Steel Wire Reinforced Thermoplastics (PE) Composite Pipe

Steel Wire Reinforced Thermoplastics (PE) Composite Pipe is also called steel mesh pipe,steel mesh skeleton plastic composite pipe,STsCP pipe,SRTP pipe and SPE pipe.It is a new kind of pipe,whose strengthened skeleton is spirally winded around high-tensile steel wires in positive and negative directions.Its inner and outer side are made of HDPE and is extruded through the hot melt adhesive.It keeps good performance of the steel pipe and characteristics of cleanness,easily laid,reliable joint and long service life of plastic pipes,etc.It not only suits water supply and drainage,fire control and gas transmission of the municipal and buildings,but also can be used to transmit chemical ubstances,petroleum,medicine,and other industrial obstacles.

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SHUANTENG

Product Description

Characteristic

◉ With long service life,it can be safely used for at least fifty years under normal conditions;

◉ Good creep resistance, high enduring mechanical strength;

◉ Good heat resistance;

◉ Rigidity,impact resistance, good dimensional stability,moderate flexibility, hardness and softness;

◉ The inside part of pipes is sleek and would not form scale. Its circulation volume is 30% more than that of steel pipe;

◉ Two sides corrosion resistance;

◉ Good self tracking performance;

◉ Its unexceptionable wearability is four times the steel tube;

◉ Excellent toughness. Even if the pipe is seriously distorted.it would not break because of its good earthquake-resistant performance;

◉The pipe is light and can be bent. It can be easily fixed and has low construction cost.

Structure

Steel wire reinforced thermoplastics (PE) composite pipe is a new kind of pipe, whose strengthened skeleton is spirally winded around high-tensile steel wires in positive and negative direction, and its inner and outer side are made of HDPE. The pipe is connected by modified polyethylene adhesive resin. It is constructed through the continuous In extrusion. Pipes are connected through electrical hot melt and connection strength is in concordance with the pipe body.

Dimensions

Nominal outer diameter, nominal pressure, nominal wall thickness and limit deviation of the pipes for water supply and for secial type fluids

Nominal outside diameter dn (mm)		Nominal pressure /Mpa
Basic dimension	Limit deviation	0.8	1.0	1.25	1.6	2.0	2.5	3.5
Basic dimension	Limit deviation	Nominal thickness & Limit deviation / mm
50	+1.2/0	-	-	-	4.5^+1.2₀	5.0^+1.2₀	5.5^+1.5₀	5.5^+1.5₀
63	+1.2/0	-	-	-	4.5^+1.2₀	5.0^+1.2₀	5.5^+1.5₀	5.5^+1.5₀
75	+1.2/0	-	-	-	5.0^+1.2₀	5.0^+1.2₀	5.5^+1.5₀	6.0^+1.5₀
90	+1.4/0	-	-	-	5.5^+1.5₀	5.5^+1.5₀	5.5^+1.5₀	6.0^+1.5₀
110	+1.5/0	-	5.5^+1.5₀	5.5^+1.5₀	7.0^+1.5₀	7.0^+1.5₀	7.5^+1.5₀	8.5^+1.5₀
140	+1.7/0	-	5.5^+1.5₀	5.5^+1.5₀	8.0^+1.5₀	8.5^+1.5₀	9.0^+1.5₀	9.5^+1.5₀
160	+2.0/0	-	6.0^+1.5₀	6.0^+1.5₀	9.0^+1.5₀	9.5^+1.5₀	10.0^+2.0₀	10.5^+2.0₀
200	+2.3/0	-	6.0^+1.5₀	6.0^+1.5₀	9.5^+1.5₀	10.5^+2.0₀	11.0^+2.0₀	12.5^+2.2₀
225	+2.5/0	-	8.0^+1.5₀	8.0^+1.5₀	10.0^+2.0₀	10.5^+2.0₀	11.0^+2.0₀	-
250	+2.5/0	8.0^+1.5₀	10.5^+2.0₀	10.5^+2.0₀	12.0^+2.2₀	12.0^+2.2₀	12.5^+2.2₀	-
315	+2.7/0	9.5^+1.5₀	11.5^+2.0₀	11.5^+2.0₀	13.0^+2.5₀	13.0^+2.5₀	-	-
355	+2.8/0	10.0^+1.8₀	12.0^+2.2₀	12.0^+2.2₀	14.0^+2.5₀	-	-	-
400	+3.0/0	10.5^+2.0₀	12.5^+2.2₀	12.5^+2.2₀	15.0^+2.8₀	-	-	-
450	+3.2/0	11.5^+2.0₀	13.5^+2.5₀	13.5^+2.5₀	16.0^+2.8₀	-	-	-
500	+3.2/0	12.5^+2.2₀	15.5^+2.8₀	15.5^+2.8₀	18.0^+3.0₀	-	-	-
560	+3.2/0	17.0^+3.0₀	20.0^+3.0₀	-	-	-	-	-
630	+3.2/0	20.0^+3.0₀	23.0^+3.0₀	-	-	-	-	-
710	+3.2/0	-	26.0^+3.0₀	-	-	-	-	-
800	+3.2/0	-	30.0^+3.0₀	-	-	-	-	-

Product specifications, pressure, and length not specified in the table can be adjusted or customized according to the actual needs of customers

Productstandards And Technical Regulations

●《Steel wire reinforced thermoplastics (PE) composite pipe and fitting》CJ/T 189-2007

●《Cross helically wound steel wires reinforced-polyethylene compositepipelincs for water supply》GB/T 32439-2015

●《Technical specification for steel wire mesh and plastic(PE)composite pipe water supply pipeline》CECS 181-2005

●《Technical specification for buried polyethylenepipeline of water supply engineering》CJJ 101-2016

●《Code for construction and accepttance ofwater and sewerage pipeline works》GB50268-2008

●《Technical code for fire protection water supply andhydrant systems》GB50974-2014

Major Technical Parameters

1. Nominal pressure correction factor
When transporting media above or below 20 ℃, the nominal pressure of the pipe should be corrected. The specific data is shown in the table below:

Temperature t / ℃	0 ≤ t ≤ 20	20 < t ≤ 30	30 < t ≤ 40	40 < t ≤ 50	50 < t ≤ 60
Calibration	1.0	0.95	0.9	0.86	0.81

2. Main engineering design parameters

Serial Number	Technical Performance Project	Index
1	Medium Temperature	-20℃ ≤ t ≤ 60℃
2	Elasticity Modulus	2.8--4.00Gpa
3	Corrasion Resistance	（Good）
4	Thermal Conductivity	0.2–0.3w/m.k
5	Wall Roughness	Ra=0.0007
6	Linear-Expansibility	12–15×10⁻⁵ m/m.k Wire mesh network

3. Hydrostatic strength and burst pressure

Purpose / Symbol	Test Temperature / (℃)	Short-term Hydrostatic Burst Pressure / MPa	Test Duration / h	Performance Requirements	Test Standard
L, T	20	Nominal Pressure × 2	1	No rupture, no leakage	GB/T 155560
L, T	20	Burst Pressure ≥ Nominal Pressure × 3	Continuous pressure increase until specimen bursts	Burst	GB/T 155560

4. Physical and mechanical properties

Serial Number	Test Item	Requirement	Test Standard
1	Pipe Color	— For water supply pipes: black or blue; black pipes shall have blue stripes — For special fluid pipes: black or red; black pipes shall have red stripes	CJ/T 189-2007
2	Stress Crack Stability	No cracks or cracking phenomenon	CJ/T 189-2007
3	Peel Strength	≥ 100 N/cm	GB/T 2791
4	Composite Layer Hydrostatic Stability	No rupture or leakage at the annular groove	CJ/T 189-2007
5	Weather Resistance	No rupture or leakage	GB/T 3681
6	Thermal Stability	> 20 min	GB/T 17391
7	Chemical Resistance	No cracking, tackiness, or abnormal changes	GB/T 17391
8	Melt Mass Flow Rate (MFR)	MFR change before and after processing shall not exceed ±20%	GB/T 3682
9	Sanitary Performance^a	Shall meet the requirements of GB/T 17219	GB/T 17219

Comparisons Of Common Pipes

1. Comparisons of common pipes

Serial Number	Items	Steel wire reinforced thermoplastics (PE) composite pipe	Steel pipe	Ductile iron pipes	Cement pipe
1	Material	HDPE and high-tensile steel wires	Steels	Iron	Cement, sand and gravel
2	Sanitary Performance	Environment-friendly product	Secondary pollution and vulnerable to rust	Easy to produce bacterium and generate "yellow water"	It may leak water and pollute the environment
3	Corrosion resistance	Both sides of the pipe are corrosion-resistant and have good acid and alkali resistance, corrosion resistance, and anti-electrochemical corrosion of soil	Hard to resist corrosion, poor local anticorrosion performance and expensive cost for anticorrosion engineering	Requiring backing coat and anti-corrosion treatment, and poor anticorrosive ability	Poor corrosion resistance
4	Impact strength resistance	Composite pipe can bear as high pressure as the steel pipe	Good pressureproof performance	Poor impact resistance	Low, collision intolerance (rigid pipe)
5	Hydraulic characteristics	The inside part of pipes is sleek and highly circulated	Rough inwall, high water resistance, easy to form scale and thus poor circulation	Rough inwall and poor circulation	Rough inside and high resistance
6	Way of connection	Perfectly sealed and connected closely	Easily affected by human factors and difficult to operate	High construction requirements and great affect of installation quality by personal factors	Easily displaced and unreliable
7	Monomer mass	Light monomer mass	Heavy monomer mass	Heavy monomer mass	Heavy monomer mass
8	Construction period and charge	Short construction period and low investment in human, material and financial resources. The cost of construction is low	Long construction period and high construction expenses	Complex construction, long construction cycle and high construction costs	High basic requirements, heavy in weight, quite a lot of machines and tools, and high cost of installation
9	Heat preservation	Excellent	Poor	Poor	Poor
10	Service life	≥50 years	≤10 to 25 years	≤10 to 25 years	≤10 to 20 years