HDPE PIPE ISO4427-2000 DN355

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Physical properties[edit]

Polyethylene is a thermoplasticpolymer consisting of long hydrocarbon chains. Depending on the crystallinity and molecular weight, a melting point and glass transition may or may not be observable. The temperature at which these occur varies strongly with the type of polyethylene. For common commercial grades of medium- and high-density polyethylene the melting point is typically in the range 120 to 180 °C (248 to 356 °F). The melting point for average, commercial, low-density polyethylene is typically 105 to 115 °C (221 to 239 °F).it is transprant.

Chemical properties[edit]

Most LDPE, MDPE and HDPE grades have excellent chemical resistance, meaning that it is not attacked by strong acids or strong bases. It is also resistant to gentle oxidants and reducing agents. Polyethylene burns slowly with a blue flame having a yellow tip and gives off an odour of paraffin. The material continues burning on removal of the flame source and produces a drip.[3] Crystalline samples do not dissolve at room temperature. Polyethylene (other than cross-linked polyethylene) usually can be dissolved at elevated temperatures in aromatic hydrocarbons such as toluene or xylene, or in chlorinated solvents such as trichloroethane or trichlorobenzene.[4]

GB/T13663-2000:

PE63管材规格
公称
外径dn,mm
SDR33 SDR26 SDR17.6 SDR13.6 SDR11
公称压力 PN,Mpa
0.32 0.4 0.6 0.8 1.0
公称
壁厚
公称
壁厚
公称
壁厚
公称
壁厚
公称
壁厚
16        2.3
20      2.3 2.3
25    2.3 2.3 2.3
32    2.3 2.4 2.9
40  2.3 2.3 3.0 3.7
50  2.3 2.9 3.7 4.6
63 2.3 2.5 3.6 4.7 5.8
75 2.3 2.9 4.3 5.6 6.8
90 2.8 3.5 5.1 6.7 8.2
110 3.4 4.2 6.3 8.1 10.0
125 3.9 4.8 7.1 9.2 11.4
140 4.3 5.4 8.0 10.3 12.7
160 4.9 6.2 9.1 11.8 14.6
180 5.5 6.9 10.2 13.3 16.4
200 6.2 7.7 11.4 14.7 18.2
225 6.9 8.6 12.8 16.6 20.5
250 7.7 9.6 14.2 18.4 22.7
280 8.6 10.7 15.9 20.6 25.4
315 9.7 12.1 17.9 23.2 28.6
355 10.9 13.6 20.1 26.1 32.2
400 12.3 15.3 22.7 29.4 36.3
450 13.8 17.2 25.5 33.1 40.9
500 15.3 19.1 28.3 36.8 45.4
560 17.2 21.4 31.7 41.2 50.8
630 19.3 24.1 35.7 46.3 57.2

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Q:UPVC what material is the pipe and the HDPE plastic pipe?
It is not suitable for hot water transportation. The adhesion of the joint is high and the curing time is long. HDPE light quality, better fatigue strength, better temperature resistance, good toughness, flexibility, welding needs electricity, but mechanical connection parts are more expensive.
Q:Not all my filter tubes flow at the same time?
If the T piece do not have a regulator on it, replace it with one that has. This is usually called an air regulator. It has a knob on it that you can use to regulate the flow of the air in the tube. Or you can buy a piece of valve that can pinch the plastic air tube so that you can regulate the air that goes into one tube or the other. These are available in your LFS. Ask them and let them show you how they do it.
Q:Hot melt connection method of PE-RT plastic pipe or the matters needing attention
When the heating time is reached, the pipe and the pipe are removed from the heating sleeve and the heating head at once, and the rapidly rotating straight line is inserted uniformly into the marked depth, and a uniform flange is formed at the joint;
Q:Is the writing method of plastic pipes DN or De? What does that mean?
De (nominal outside diameter) *e (nominal wall thickness) is the seamless pipe representation. The plastic pipe shall be expressed as de (nominal outer diameter) *e (nominal wall thickness).
Q:Anyone know where I can buy a custom tube (wood, aluminum, or plastic) with the following dimension...?
Go to any machine shop they can turn one out in no time. By the way that is closer to being a ring than a tube
Q:Getting toothpaste out of the tube?
No, but they are in stores by the dental products.
Q:What is the transition metal pipe between the plastic water supply pipe and the water heater?
In the PP-R piping system, the transition between the metal pipe and the plastic pipe needs a transition piece, the transition piece and the PP-R pipe are connected by hot melt, and the transition part is connected with the metal pipe through a screw thread.
Q:Owner of Toyota Corolla 95 4AFE: What do you call the tube connecting the air filter to the engine?
Intake air tube.
Q:Please tell me the pipe diameter: plastic pipe Phi 25, is it equal to DN20?
Phi 25 may be a DN20 iron tube (wall thickness 2.5mm), or a DN25 PVC tube.
Q:How do I seal polypropylene tubing?
That should be a compression fitting. If it's a brass fitting then they are one time use. You can get a new brass fitting, cut the PP tube clean with a knife or a razor blade - be careful not to cut yourself please, then install the nut over the tube, slip the compression ring over the tube and if there's an insert that goes inside the PP, insert that. Then push the hose into the fitting and slide the nut and ring to the threaded portion of the fitting and tighten it. Be careful to tighten it enough to seal but not so tight you cut through the pipe again. It's likely the reason you have the leak in the first place is because someone overtightened it. OR you can simply buy a replacement hose. I'd prefer a wire braid shielded pipe. Stronger and made with a professional fitting on the end, one you don't have to mess with. My opinion, replacing the tube is the better idea. And they're not stupidly expensive either. Good luck with your project. '')

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