HDPE PIPE ISO4427-2000 DN200

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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]


SDR33 SDR26 SDR17.6 SDR13.6 SDR11
公称压力 PN,Mpa
0.32 0.4 0.6 0.8 1.0
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 kind of pipe material does the building PPR pipe belong to? Is it a plastic tube and a composite pipe?
PP-R tube is also called type three polypropylene pipe. It is made of random copolymerized polypropylene and is extruded into tube. The injection is made into pipe fittings. It is a new plastic pipe developed and applied in Europe in the early 90s.
Q:i connected a plastic tube about 7 or 8 inchs long onto a butane can im wondering if when i push down on the..
The fire in this case is a reaction between butane from the can and oxygen from the air. If either one is missing, there can be no fire. The fire cannot propagate back up the tube, since the tube will be filled with pure butane, meaning there will be no oxygen in the tube.
Q:mossberg 500 tube spring sticks on last shell?
The tube will unscrew, but not easily the first time it comes off. When the mag springs in our department Mossbergs get tired, we replace them with Remington 870 mag springs and they seem to hold up better. Field strip the shotgun. Put the end of the mag tube in a vise and clamp down ONLY on the little rectangle on the end of the tube (NEVER on the tube itself). Insert the wooden handle.of your hammer into the receiver as close to the barrel mount as you can. Evenly as possible rotate counterclockwise. Remember, it's not going to come off easily. When it lets go, remove the tube, the follower and the spring. Do not try to just stretch out the spring a little. It won't work. Replace the spring and put the follower back in. put the tube back on the receiver. I find it easier to push the follower into the tube a little until you get the threads started. be careful not to crossthread. tighten it up the same way you took it off.
Q:Where can I buy plastic coin tubes?
Joann Fabric has a great selection. They're actually back in the bead isle.
Q:How can I train my cat not to chew on oxygen tank tubing?
I have the same problem, long term because i have the cats AND am the one on oxygen. I can tell you that I am still searching for a more ideal way, but there are two, and both are kind of involved: 1) rub the tubing with soap, especially hard soap, since it will stick. this works with all cords, because the cats will not lick at soap; 2) this won't work in the short term, but covering up the tubing with something like fabric will disguise it and the cats won't investigate further. i do both with my cats, though I will say that covering up the tubes actually works better, for some reason cats won't go after it when they don't see it, even if they know it is under the fabric. So i would try rubbing the tubing with soap, since your mom is already there, if you have the time and energy, but your mom is going to need extra tubing. it's really hard to keep cats away. i was hoping that someone would have given you a better answer than mine when i saw the question!
Q:Plastic pipe gas problem 150 degrees, plastic pipe surface problems?
The most widely used plastic pipe is plastic pipe. There are many kinds of plastic pipes, which are divided into two categories: thermoplastic pipes and thermosetting plastic pipes. It belongs to thermoplastic, including PVC pipe, polyethylene pipe, polypropylene pipe, POM pipe, super high molecular weight polyethylene pipe, etc. it belongs to thermosetting phenolic plastic pipe. The main advantages of plastic pipes are good corrosion resistance, light quality, convenient molding and easy processing. The disadvantages are low strength and poor heat resistance.
Q:How to make mice tubes???? :)?
It would be a lot safer and easier to buy the tubes, even if it is more expensive. Please just buy them, because DIY tubes could be unsuitable, there is always a chance that mice could chew through it or it could break while they're inside it. Sorry I couldn't help much :)
Q:I am looking for paint that I can use on flexible plastic tubing that won't peel or crack. Any ideas?
You're going to need a paint that embeds itself into the plastic. Those are specialty paints, and won't come cheap as they need to be flexible. Might want to call a couple of auto body shops, they paint plastic. Or a metal fabricator, sometimes they paint plastic, too. - The Gremlin Guy -
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:Why is the concrete wall filled with long and thin white plastic pipes?
Along the wall, it is possible to embed the wire through the wall.

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