HDPE PIPE 4427-1996

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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:An air core is no core except air.: Cute, but I saw the punch line back with the first bird.

Q:Can a plastic pipe be evacuated into a vacuum?: Vacuum, of course, but does not guarantee how long the vacuum can be maintained.

Q:How are plastic tubes recycled?: Plastic tubes are recycled through a process that involves sorting, cleaning, shredding, melting, and reforming. First, the tubes are sorted based on their plastic type and color. Then, any contaminants are removed through a thorough cleaning process. Next, the tubes are shredded into small pieces. These shredded pieces are then melted and formed into small pellets or granules. These pellets can be used to manufacture new plastic products, including tubes, or can be used as raw materials in various industries.

Q:There are so many plastic tubes in the beer brewing process, and the cleaner that comes with the kit is not good enough. I was wondering if anyone has any good tips or tricks.: soak them in bleach water, a sink full of water to 1 cap of bleach.

Q:So I was eating GoGurt yogurt. And I think I accidentally swallowed a part or the jagged part on the top of the tube. I don't think it was very big. I'm guessing the size was the size of half of a dime or a 1/4 of a dime. I know this doesn't sound too bad, since I've heard people who swallowed pennies, then they were fine, but I don't know how to get rid of it. I can still breathe and drink normally, but when I talk for too long, my throat starts to hurt a little. So far, I've tried drinking lots of water, swallowing some food to push it down (rice. :D), coughing, vomiting, and clearing my throat but I think it's still there. I'm actually not sure if it's still there or if it is gone, or just made a cut so it hurts. But I don't want to go to the doctors or ER, I'm poor. Are there any other ways to get the plastic out? Oh and if I leave it there, how long will it take for it to go down my throat and digest?: Try eating more rice. If that doesn't work try to stick your finger down your throat but not far enough to make you throw up. Try to pull it out. I did that once when I was choking on a cheeto. Good luck

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

Q:I don't need the candy, just the tubes. Do you know where I can buy them in bulk , and at a reasonable price?: I have no idea, but it is a very specific question... I don't even know what sandy candy is...

Q:I don't want an online store.please and thanks!!: Best place is a hobby shop. People use them for everything from holding dice to keeping change in.

Q:What are the common applications of plastic tubes?: Plastic tubes have a wide range of common applications, including packaging for products such as cosmetics, pharmaceuticals, and food items. They are also commonly used in plumbing systems for conveying fluids and gases. Additionally, plastic tubes are utilized in various industries for electrical insulation, cable management, and as structural components in construction projects.

Q:What pipes and connections are commonly used in sewage pipes?: A double wall corrugated pipe for a municipal road; a reinforced concrete pipe or steel pipe for a main pipe.Commonly used are stainless steel, PVC and polypropylene pp-r. Generally for hot melt welding, and another kind of pipe connection is hot melt socket, but it is only used for drainage pipe, because there is pressure to the water pipe, so it can not be used, easy expansion.The most commonly used material for sewage pipes plastic pipes and pipe fittings, rigid PVC pipes (UPVC) and UPVC pipes are the most widely used plastic pipes both at home and abroad. UPVC tube has high impact resistance and chemical resistance.

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