HDPE PIPE ISO4427-2000 DN225

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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:How do plastic tubes perform in acidic environments?: Plastic tubes generally perform well in acidic environments, as they are resistant to corrosion and degradation caused by acids. However, the specific performance can vary depending on the type of plastic used. Some plastics may have higher resistance to acids than others, so it is important to choose the appropriate plastic material for the specific acidic environment.

Q:What is the weight of plastic tubes compared to other materials?: The weight of plastic tubes can vary depending on the specific type of plastic used, but in general, plastic tubes tend to be lighter compared to other materials such as metal or glass.

Q:You know those cheap popsicles that come in a cylindrical plastic bag? They come in big boxes inwhich they are all linked together. When I eat those, I always start coughing, and I've heard a lot of people say the same thing. What is the reason for this?: never heard of that

Q:Is the writing method of plastic pipes DN or De? What does that mean?: The numbers followed by DN indicate the size of the pipe. The nominal diameter can be expressed in metric mm or in English in. Usually close to the inside diameter; a standard term for engineering installations.

Q:how do i safely clean the inside of used fluorescent tubes in order to use them for a different purpose.?: You don't. The tubes contain mercury (in a VERY minute amount) and should not be opend up for any reason other than disposal, which only recycling firms are allowed to do. There IS another alternative however, and that is the plastic safty cover for them. They are sold at the big box stores, Home Depot and Lowe's, and likely in other places as well. The link shows some *specialty* covers but there are also plain, clear covers for them, though I admit that the colored ones give you a much better idea of what to look for. Al

Q:Are plastic tubes resistant to staining from food dyes?: Yes, plastic tubes are generally resistant to staining from food dyes.

Q:Are plastic tubes suitable for DIY crafts?: Yes, plastic tubes are suitable for DIY crafts. They are versatile and can be easily cut, shaped, and decorated to create various craft projects such as jewelry, flower vases, organizers, and more. Additionally, plastic tubes are lightweight, affordable, and come in different sizes and colors, allowing for endless creative possibilities.

Q:I need to find a wholesaler who sells clear plastic tubes, like what you would find buttons in in a craft store (needs to have a lid). They need be be about two inches in diameter, and 6-12 long. I've tried google, clearbags, and every resource I can think of, but I'm coming up short. Help is appreciated!: Ask other stores where they order there's from. Sure it's going to a competitor for help but when your desperate you gotta go!

Q:Rescue fish, currently in temporay home 20 gal 70' filtered oxygenated tank until I can get another tommorow. But he looks stressed, I think he needs a place to hide for the night, and the PVC I have at the moment is too light to sink. I found the plastic in the basement of the older home we live in, good size for him, but I am worried that plastic of an uncertain age might give off some kind of toxin/poison. Can anybody help? Suggestions for alternatives welcome...: That's the old ABS plastic. It's not used much anymore because of problems with building codes. It's no more toxic than PVC. until a house fire starts it to burn. Stay away from old joints with cement, sterilize as you would with any other ornament and you'll be fine. You can also still buy it new.

Q:Do plastic tubes have any UV resistance?: Yes, plastic tubes can have varying degrees of UV resistance depending on the type of plastic used. Some plastics, such as PVC and acrylic, are naturally UV resistant, while others may require the addition of UV stabilizers to enhance their resistance to UV radiation.

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