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Polyethylene (PE) pipe for gas

Huaxi Village brand PE gas pipeline, the product quality fully meets the national GB15558.1-2015 (buried polyethylene pipe for gas) requirements. The production process strictly implements the ISO9001 and IS014001 guarantee systems. Under the specified conditions of use (refer to CJJ63-2018), its service life can reach 50 years. Perfect quality assurance system, advanced testing methods and strict testing system ensure the excellent quality of the company's products. Over the years, the company's pipe pass rate is 100%, and the factory pass rate is 100%.


Key words



Product Details


hsEarthquake and weather resistance

It has strong adaptability to uneven foundation and dislocation, and can withstand harsh environments such as earthquakes and typhoons.

hsUltra high strength

Always maintain high strength, excellent resistance to environmental stress cracking, and good creep resistance.

hspreservative

Corrosion-resistant, no need for anti-corrosion treatment, and long service life.

hsEnvironmentally friendly and non-toxic

Non-toxic, safe and hygienic, polyethylene itself is a non-toxic and renewable material that will not pollute the environment.

hsEasy construction and maintenance

The connection is convenient and reliable, the construction and maintenance are simple (the water does not stop during the period), and it is suitable for excavation and trenchless technology.

hsLow temperature shock resistance

It has good low temperature impact resistance and can be used safely in the range of -20 to 40°C, and it will not be affected by winter construction.

 

Maximum allowable working pressure (MPA) for polyethylene pipes

Types of Town Gas PE80         PE100
SDR11 SDR17 SDR11 SDR17
natural gas 0.50 0.30 0.70 0.40
liquefied petroleum gas mixed air 0.40 0.20 0.50 0.30
gaseous 0.20 0.10 0.30 0.20
artificial gas dry gas 0.40 0.20 0.50 0.30
other 0.20 0.10 0.30 0.20

 

Performance requirements

performance unit Require Test parameters experiment method
Hydrostatic strength (HS) h Destruction time 2100

20°C (ring stress)

PE80 PE100

9.0Mpa 12.4Mpa

 
Destruction time N165

80°C (ring stress)

PE80 PE100

4.5Mpa 5.4Mpa

GB/T 6111-2003
Destruction time 21000

80°C (ring stress)

PE80 PE100

4.0Mpa 5.0Mpa

 
Elongation at break % 2350   GB/T 8804.3-2003
Weatherability is only available for non-black pipes  

After climate aging, the following properties should be met: Thermal stability (table below)

HS (165h/80°C) (table)

Elongation at break (table)

E>3.5GJ/m2

GB/T 17391-1998

GB/T 6111-2003

GB/T 8804.3-2003

Resistant to rapid crack propagation (RCP)
Full-size (FS) test: dn≥250mm or S4 test: suitable for all diameters Mpa Mpa

Critical pressure for full-scale testing, Pc.FS≥ 1.5xM0P

Critical pressure of the S4 test Pc.s4≥ MOP/2.4-0.072d

0℃ 0℃

ISO 13478:1997 

GB/T19280-2003

Resistant to slow crack growth >5mm h 165

80°C, 0.8Mpa (test pressure)

80°C, 0.92Mpa (test pressure)

GB/T 18479-2001

 

Physical properties of the pipe

project unit performance requirements Test parameters experiment method
Thermal stability (oxidation induction time) min >20 200℃ GB/T 17391-1998
Melt Mass Flow Rate (MFR) g/10min 20% change in MFR before and after processing< 190℃, 5kg GB/T 3682-2000
Vertical retraction rate % ≤3 110℃ GB/T 6671-2001

 

Specifications

Material Grade/Standard Size Ratio SDR17 SDR11
PE80 The maximum permissible pressure PN≤0.3P The maximum allowable pressure PN≤0.5Pa
PE100 The maximum allowable pressure PN≤0.4Pa The maximum allowable pressure PN≤0.7Pa
Specification Nominal outer diameter (mm) Wall thickness (mm) Weight (kg/m) Wall thickness (mm) Weight (kg/m)
D20     3.0 0.16
D25     3.0 0.21
D32 3.0 0.28 3.0 0.28
D40 3.0 0.35 3.7 0.43
D50 3.0 0.45 4.6 0.66
D63 3.8 0.71 5.8 1.05
D75 4.5 1.01 6.8 1.47
D90 5.4 1.45 8.2 2.13
D110 6.6 2.16 10 3.17
D125 7.4 2.76 11.4 4.11
D140 8. 3.47 12.7 5.13
D160 9.5 4.53 14.6 6.73
D180 10.7 5.75 16.4 8.51
D200 11.9 7.10 18.2 10.49
D225 13.4 8.99 20.5 13.30
D250 14.8 11.04 22.7 16.36
D280 16.6 13.87 25.4 20.51
D315 18.7 17.57 28.6 25.98
D355 21.1 22.34 32.2 32.96
D400 23.7 28.28 36.4 41.97
D450 26.7 35.84 40.9 53.06

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