HDPE PIPE ISO4427-2000 DN180

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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

Q:Are plastic tubes suitable for electrical conduit systems?: Yes, plastic tubes are suitable for electrical conduit systems. They are lightweight, easy to install, and provide excellent protection for electrical wires. Additionally, plastic tubes are resistant to corrosion, moisture, and chemicals, making them a durable and cost-effective choice for conduit systems.

Q:A meat baster consists of a squeeze bulb attached to a plastic tube. When the bulb is squeezed and released, with the open end of the tube under the surface of the basting sauce, the sauce rises in the tube to a distance h, as the drawing shows. It can then be squirted over the meat.Using 1.013e+05 Pa for the atmospheric pressure and 1100 kg/m3 for the density of the sauce, find the absolute pressure in the bulb when the distance h is each of the following.(c) h = 0.140 m Pa=?(d) h = 1.10 10-1 m Pa=?: Meat Baster

Q:Are plastic tubes resistant to oil and grease?: Yes, plastic tubes are generally resistant to oil and grease.

Q:Are plastic tubes resistant to vibration?: Yes, plastic tubes can generally be resistant to vibration depending on the type of plastic used and its design. Some plastics, such as PVC or polypropylene, have inherent vibration-damping properties, while others may require additional reinforcements or modifications to enhance their vibration resistance. Overall, plastic tubes can be engineered to withstand and minimize the effects of vibration in various applications.

Q:How are plastic tubes sealed to prevent leakage?: Plastic tubes are sealed to prevent leakage through various methods such as heat sealing, ultrasonic sealing, adhesive sealing, or crimping, depending on the specific type of plastic and the intended application.

Q:How can a PPC plastic pipe be broken?: First, you should turn off the tap valve, and then observe the leak point to see what is happening at the break.

Q:How do plastic tubes compare to silicone tubes in terms of flexibility?: Silicone tubes are generally more flexible than plastic tubes.

Q:He keeps biting it. Im starting to worry because if he bites a lot isnt it dangerous? Please help. He already bit before.: For the person who said their hamster chews on the bars of it's cage and it's fine, they are wrong. Chewing on those bars can give your hamster brain damage and deformed teeth. See, this is why you should'nt really buy those commercial cages because they're made of cheap plastic that your hamster can ingest and sicken itself with. Do you have a lot of yew toys for your hamster? Chew toys are a neccesitie as hamsters teeth never stop growing, they need to wear them down on something healthy like wood or carrots. Not plastic. I'd recommend either replacing the chewed tubes and buying more chew toys or getting a 20 gallon aquarium for your hamster. People will say there isn't enough ventilation but as long as you get a screen cover it will be fine, trust me.

Q:I have a winter white hamster, and he always sleeps in his plastic tubes.Should i be worried? Im afraid ther is not enough air flow......Well? Should i be worried? Additional Details?: its nothing to worry about he could be sleeping there cause he has not found another place to sleep yet or he is sleeping there cause he knows you cant get him there so he feels safer there (my ham did that for a while). just make sure there are plenty of places for him to sleep like huts holes and lost of bedding for him to burrow and give him a day or two to find though's places and he wont worry about getting picked up as much (dwarfs just don't like to be picked up). hope this helps

Q:how do i safely clean the inside of used fluorescent tubes in order to use them for a different purpose.?: Don't do this. The glass is fragile and easily shattered. It contains mercury - not nice stuff to deal with. Get glass tubing or plastic tubing instead.

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