HDPE PIPE ISO4427-2000 DN73

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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:Why did the plastic tube turn opaque?
If the plastic tubing was exposed to heat, then the resultant color change was most like due to a disruption in the chemical lattice of the plastic. A plastic is basically a polymer or group of polymers (polymer=same chemical compound repeated over and over again). When heat or another energy source is apllied, it has the ability to alter the polymer structure. Think of a polymer in similar terms as a crystal; all of the compounds in the plastic will align themselves in a similar way as the previous compound. When you do this with minerals, you end up with a clear or partially clear crystal. The same basic principal applies to polymers (plastics). Hope this helps!! P.S. some chemicals have the same ability to alter the plastic, same as an enrgy source..
Q:trying to find these sweets that look like little raindrops in a plastic tube, not around anymore?
I'm not entirely sure but I know they sell Hard rock ice candies' They look like little sparkly drops, or maybe raindrops. They can come in separated pieces or all attached on a stick (Like a corndog)
Q:can irrigation plastic tubing be used for electrical conduit in concret or cement new home construccion?
You should use sched 40 pvc conduit. It does not have to be buried very deep inside of a buliding, but I would suggest scatching it down a few inches below the concrete pour just in case you ever have sawcut the floor. DO NOT USE IRRIGATION PIPE. Never use 1/2 conduit underground. Use 3/4 or larger.
Q:Is the diameter of the plastic tube 20mm in diameter 18mm?
20mm diameter plastic pipes, aperture, 18mm market there are manyFirst of all, look at what material is plastic tubeIf it is PC plastic pipe outer diameter of 20 mm, diameter 18 mm, 1 mm is so kind, this kind of plastic pipe will generally have a spot, also can achieve the customized specifications, can also die if not die
Q:in your opinions what's the best tube style or plastic cage for a regular golden hamster?
www.okorder.com/ i suggest this cage. A cage too big will just be wasted space because as the hamster gets older, it makes it harder to get around. This cage is perfect, i have raised three hamsters in mine, and it works like a charm. The top is used for sleeping and the bottom gives them more than enough room!
Q:Is there an easy way to remember the color tubes (phlebotomy) and what test they are needed for?
This Site Might Help You. RE: Is there an easy way to remember the color tubes (phlebotomy) and what test they are needed for?
Q:Why is oil spraying out of Kawasaki KX250 tube?
The link doesn't work - session is timed out. Always give year, make, engine size and model # when asking questions. We need all of that info to give an informed answer. I know what tube you are talking about. That tube is the breather hose for the power valve. As the piston rings start to ware, the oil in the premix doesn't get fully burned and accumulates on the power valve and lt's linkage. The engine is probably overdue for a top end rebuild and power valve cleaning. Remove the cover to see how much crud is in there. 2 stroke engines require rebuilds quite often, to prevent damage to the cylinder. If the top end is fresh, remove and clean the power valve. Otherwise clean the valve and replace the piston rings.
Q:Plastic pipes have steam, how to handle dry?
The plastic tube contains water vapor, which is cooled and condensed into the pipe.Suggested preservation scheme: sealed, preserved, or as dry as dry.Treatment plan: blow dryAs for sun dryingPut together with the desiccant
Q:PP-R what's the plastic tube?
PP-R plastic pipes are made of random polypropylene plastic pipes, generally used for water supply pipes. Hot melt welding.
Q:Please read i was in the er and while i had the lil tube thinggy in my vein it was left in me?
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