HDPE PIPE ISO4427-2000 DN40

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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:what do you call the plastic tubes used for pet water bottles, and where can you find them?
rubber tubes? you can find them at any pet supply store.
Q:tubular bellows?
Try plastic dryer vent pipe. Its spiral wire with some kind of mylar like skin. It can be used as bellows. Right around 4 diameter.
Q:What makes a metal tubes a more suitable choice for the heat excahnge than plastic tube?
Metal tubes are not necessarily better suited. It is application dependant. They are more robust meaning in general they can support more pressure. Copper is an excellent thermal conductor. Plastic is lighter à, can flex much more… If weight is no issue, then for sure go with copper! It also depends on very many factors like temperature, pressure, chemical compatibility... Hope this properly answers your question Guru
Q:How do you keep kinks out of plastic air tubing?
Since this could be a Life Threatening Situation you should speak to your Doctor and the supplier of your Medical Oxygen equipment BEFORE changing anything. They have experience with YOUR situation and can make suggestions accordingly. If you do not Twist or Severely Bend the tubing by over tensioning it, as would happen if you pulled on it when it became taught, it likely should not be kinking. Therefore try to adjust how you treat the tubing in those situations to avoid that problem in the future. Alternately, if the strain is caused by a length of tubing that is too short thus restricting your movements to the point of kinking, a slightly longer piece of tubing might be in order. (CONSULT your Doctor about the appropriateness BEFORE changing the length of the tubing.) In the case of many of the clear plastic tubings, a given size (I.D. / Inside Diameter) is available with more than one Wall Thickness. A Thicker Wall will make the tubing less likely to kink or crush out of shape, but will be stiffer and heavier.
Q:PVC plastic pipe in the underground, what need to diameter, the hoop and flange is a kind of thing?
The flange is the part that connects the pipe to the pipe and is connected to the end of the pipe. Flange connection or flange connection, is defined by the flange, gasket and bolt connection between the three sealing structure of the detachable connection as a combination of group pipe flange refers to the pipeline installation of piping flange, used in equipment refers to equipment import and export flange. The flange is lined with bolts to secure the two flanges. Gaskets for gaskets between flanges. Flange, threaded joint flange and welding flange.
Q:How can I stop my hamster from using its tube as a toilet?
My science teacher taught this to me. She uses a little container (a flat dish of some sort); I used one of those hummus containers. Fill it with kitty litter (any kind), and she will go there to pee all the time. Don't know how, but it worked with my hamster. Try it! Those hamster litter and potty things never work from the store.
Q:i need a small (inch or smaller if possible) that could turn on and off water/ air supply to plastic tubing.?
Gag, what a dumb concept - balloons break. All kinds of small valves are available for plastic tubing for use in medicine but turning on and off the pump is probably the cheapest. You need surgical rubber tubing to be soft and compressible which is probably going to be damaged by the smoke and how are you going to clean this thing?
Q:Reinforced concrete walls are eyes, and some have plastic tubes on their eyes, what's the matter?
A fixed formwork used for pouring concrete through formwork clips
Q:how much fence privacy plastic tubing needed?
Each box covers 40 sq ft. 4ft X 10ft = 40 sq ft so you will need 1 box.
Q:question about a leaking faucet tube. pic inside.?
best thing to do is replace the tube. the rubber part inside the plastic nut was formed to the old faucet. Best to do the job right, than to wake up in the middle of the night listening to water dripping. Also don't use the plumbers putty, if your going to cut corners use teflon tape.

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