You are here: Home » Products » Steel Wires Welded Skeleton Reinforced Polyethylene Composite Pipe

Share to:

Steel Wires Welded Skeleton Reinforced Polyethylene Composite Pipe

The composite pipe formed by continuous winding and welding mesh steel wire skeleton and polyethylene resin is suitable for liquid, solid and mixed transportation, as well as the transportation of drinking water, fire water, industrial wastewater, corrosive liquid, gas and other media. When transporting gas medium, the temperature of the medium shall no more than 40℃; When transporting other types of media, the temperature of the media shall no more than 80C。

Availability:

Quantity:



Inquire Add to Basket

Brand:
SHUANGTENG

Product Description

Product Specification

Nominal Outer Diameter dₙ / mm	Average Outer Diameter dₑₘ and Deviation / mm	Nominal Wall Thickness eₙ and Tolerance / mm					Clearance Between Steel Wire and Inner/Outer Wall / mm
		Nominal Pressure / MPa
		1.0	1.6	2.0	2.5	4.0
75	75^+1.0₀	—	—	9.0^+1.5₀	9.0^+1.5₀	9.0^+2.5₀	≥1.8
90	90^+1.0₀	—	—	9.0^+1.5₀	9.0^+1.5₀	9.0^+2.5₀
110	110^+1.0₀	—	—	9.0^+1.5₀	9.0^+1.5₀	9.0^+2.5₀
125	125^+1.0₀	—	9.0^+1.5₀	9.0^+1.5₀	9.0^+2.0₀	9.0^+3.0₀
140	140^+1.0₀	—	10.0^+1.5₀	10.0^+1.5₀	10.0^+2.0₀	10.0^+3.0₀
160	160^+1.5₀	—	12.0^+1.5₀	12.0^+1.5₀	12.0^+2.0₀	12.5^+3.0₀
180	180^+1.5₀	—	12.0^+1.5₀	12.0^+1.5₀	12.0^+2.0₀	12.5^+3.0₀
200	200^+1.5₀	—	12.0^+1.5₀	12.0^+1.5₀	12.0^+2.0₀	12.5^+3.0₀
225	225^+1.5₀	—	12.0^+2.0₀	12.0^+2.0₀	12.0^+2.0₀	—	≥2.5
250	250^+2.0₀	12.5^+2.0₀	12.5^+2.0₀	12.5^+2.0₀	13.0^+2.0₀	—
280	280^+2.0₀	12.5^+2.0₀	12.5^+2.0₀	12.5^+2.0₀	13.0^+2.0₀	—
315	315^+2.0₀	12.5^+2.0₀	12.5^+2.0₀	12.5^+2.0₀	13.0^+2.5₀	—
355	355^+2.5₀	14.0^+2.0₀	14.0^+2.0₀	14.5^+2.0₀	—	—
400	400^+2.5₀	15.0^+2.5₀	15.0^+2.5₀	15.5^+2.5₀	—	—
450	450^+2.5₀	15.0^+2.5₀	15.0^+2.5₀	15.5^+2.5₀	—	—	≥3.0
500	500^+2.5₀	15.5^+2.5₀	15.5^+2.5₀	16.0^+3.0₀	—	—
560	560^+3.0₀	15.5^+3.0₀	16.0^+3.0₀	16.5^+3.0₀	—	—
630	630^+3.0₀	19.0^+3.0₀	20.0^+3.0₀	—	—	—

1. Hydrostatic strength and bursting pressure

Item	Conditions	Requirements
Hydrostatic Strength	Temperature: 20℃, Duration: 1 h, Test Pressure: Nominal Pressure × 2	No leakage, no rupture
	Temperature: 80℃, Duration: 165 h, Test Pressure: Nominal Pressure × 1.5 × 0.76	No leakage, no rupture
	Temperature: 80℃, Duration: 1000 h, Test Pressure: Nominal Pressure × 1.5 × 0.71	No leakage, no rupture
Burst Pressure	Temperature: 20℃, Continuous pressure increase until specimen bursts	≥ Nominal Pressure × 3

2. Physical and mechanical properties.

Serial Number	Item	Conditions	Requirements
1	Stress Crack Stability	Compress to 50% of the outer diameter and hold for 10 min	No cracks
2	Longitudinal Reversion Rate / (%)	110℃, hold for 1 h	≤ 0.4
3	Thermal Stability (Oxidation Induction Time) / (min)	210℃	≥ 20
4	Melt Mass Flow Rate (MFR) / (g/10 min)	190℃, 5 kg	Change before and after processing shall not exceed ±20%
5	Ash Content / (%)	(850 ± 50)℃	≤ 0.1

3. Nominal pressure correction factor

Temperature t / ℃	-20 < t ≤ 20	20 < t ≤ 30	30 < t ≤ 40	40 < t ≤ 50	50 < t ≤ 60	60 < t ≤ 70	70 < t ≤ 80
Nominal Pressure Correction Factor	1	0.95	0.90	0.86	0.81	0.70	0.60

4. Bending radius

Nominal Outer Diameter / dₙ	75	90	110	125	140	160	200	225	250	315	355	400	450	500	560	630
Minimum Allowable Bending Radius	80d				100d						110d

5. Support spacing

Nominal Outer Diameter / dₙ	75	90	110	125	140	160	200	225	250	315	355	400	450	500	560	630
Support Spacing / m	2.5		3.0			3.5			4.0			5.0

5. Chemical corrosion resistance (Common corrosive media, see Appendix B of QB/T5538-2020 for other media)

Chemical Medium	Concentration (Mass Fraction)	20℃	60℃
Acetaldehyde	100%	Excellent corrosion resistance	Limited corrosion resistance
Gasoline, Petroleum, Aliphatic Hydrocarbons	–	Excellent corrosion resistance	Limited corrosion resistance
Mercury	100%	Excellent corrosion resistance	Excellent corrosion resistance
Toluene	100%	Limited corrosion resistance	Poor corrosion resistance
Sodium Hydroxide	40%	Excellent corrosion resistance	Excellent corrosion resistance
Sulfuric Acid	50%	Excellent corrosion resistance	Excellent corrosion resistance
	98%	Excellent corrosion resistance	Poor corrosion resistance
	Mist	Poor corrosion resistance	Poor corrosion resistance

6. Other engineering design parameters

Parameter Name	Unit	Value	Parameter Name	Unit	Value
Linear Expansion Coefficient	1/°C	35 × 10⁻⁶	Vicat Softening Point	°C	117.9
Longitudinal Shrinkage Rate	%	≤ 0.4	Tensile Yield Strength	MPa	22–23
Elastic Modulus	GPa	4.0	Shore Hardness	—	60
Thermal Conductivity at 20°C	W/(m·K)	0.43	Notched Impact Strength	J/mm²	15
Absolute Equivalent Roughness	mm	0.01	Flexural Creep Modulus	MPa	800

Standards And Technical Specification

◉《Steel wires welded skeleton reinforced polyethylene composite pipes and fitting》QB/T 5538-2020

◉《Non-metallic composite pipe for petroleum and natural gas industries -Part 1: Steel skeleton reinforced

polythene composite pipes》SY/T6662.1-2022

◉《Technical specification for buried plastic pipeline of water supply engineering》CJJ101-2016

◉《Code for construction and acceptance of water and sewerage pipeline works》GB/T 50268-2008

◉《Technical specification for steel skeleton polyethylene(PE) composite engineering》CECS 315-2012

Product Features

◉ The composite of steel and plastic materials is uniform and reliable, with good creep resistance and high lasting mechanical strength.

◉ Good corrosion resistance

◉ Good temperature resistance.

◉ It has good impact resistance, rigidity and dimensional stability, and has certain flexibility. It is suitable for underground, overhead and other laying methods.

◉ Small coefficient of thermal expansion.

◉ Rapid cracking will not occur.

Application Area

◉ Oil field gathering and transmission pipe, sewage pipe, crude oil and product oil transmission pipe, oil well injection polymer pipe, brine treatment pipe, etc. It is especially suitable for the transportation of sulfur-containing oil, gas, water and other media.

◉ Chemical industry is used for industrial piping and discharge pipelines for the transportation of corrosive media in petrochemical, acid-base salt manufacturing, chemical fertilizer, pesticide, pharmaceutical and other industries.

◉ Municipal construction, urban water supply and drainage, natural gas and gas transmission.

◉ Domestic piping and structural piping such as sewage pipe, water supply and drainage pipe and ballast pipe on board.

◉ Mine slurry delivery pipe, engineering well pipe and pumping pipe

◉ Agriculture is used for deep well pipe, filter pipe, dry land irrigation pipe, underdrain pipe, etc.

◉ Seawater transportation is used for seawater transportation in seawater desalination plants, coastal power plants and seaport cities.