HDPE PIPE ISO4427-2000 DN355

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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: Where can i buy flexible plastic tubing od 2mm?: A place that has aquarium supplies

Q: I recently bought a '95 C220, shes my first MB and after a week of driving I have vowed to never buy any other brand of car. I think i've just about figured out all of her idiosyncricies, however this one still confuses me. There is a small 1/4 diameter or so plastic tube comming out of the floor to the left the battery/fuse box in the trunk, about 8 inches long or so. It has an L connector on the end, but it is not fastened to anything, nor can i find anything that it could fasten to. Any clues anyone? Vaccume tube for some component that was never installed?: yep it is for the battery, look for a hole in the side of the battery towards the top of it. if it is a genuine mercedes benz battery it will have the hole. some aftermarket batterys have it and others dont. it is ok to leave it disconnected it will not affect how the car functions

Q: I broke off the little plastic part on my oil dipstick in the oil dipstick tube. How can i get it out? My dips?: If the metal part of the stick isn't within reach, the tube may be removable? Usually you remove the bolt holding the tube, then the only thing holding it should be the o-ring. I'd have to look at it, I can't see much from here.

Q: What's the function of the plastic tube in this crown beam?: It doesn't work. It's left by the screw

Q: Light enters a solid tube made of plastic having an index of refraction of 1.69. The light travels parallel to the upper part of the tube. (See the figure .) You want to cut the face AB so that all the light will reflect back into the tube after it first strikes that face.: Hello The angle for total internal reflection is Θc = arcsin(n2/n1) in the case where n2 = 1 (air) Θc = arcsin(1/1.69) = 36.27° -- ans. this is the angle with the normal of the surface. The angle that you are asking for is 90°-Θc = 53.73° ---------- in the case where n2 = 1.333 (water) Θc = arcsin(1.333/1.69) = 52.06° and Θ = 90 - 52.06 = 37.94° -- ans. Regards

Q: Is rigid PVC double wall corrugated plastic pipe with HDEP pipe one kind?: The HDEP drain is mainly made of HDPE resin (the formula is simple and the price will be cheaper after synthesis)

Q: it is too short as it allows water backup from my discharge pipe. does anyone have any idea's how I can extend my gooseneck deeper into my discharge pipe so water does not back up?and no, I do not have a blockage. my plumber told me my washer discharge gooseneck is too short. it needs to go 8 to a foot into pipe.: If your 6 gooseneck has a plastic discharge try anti-biotics and see a urologist

Q: Can plastic tubes be used for HVAC systems?: Yes, plastic tubes can be used for HVAC systems. Plastic tubes, such as polyvinyl chloride (PVC) or high-density polyethylene (HDPE), are commonly used for various applications in HVAC systems, including drainage, condensate lines, and refrigerant lines. These plastic tubes offer advantages like durability, corrosion resistance, and ease of installation, making them a suitable choice for HVAC installations. However, it is important to follow industry standards and guidelines when selecting and installing plastic tubes in HVAC systems to ensure proper functioning and safety.

Q: How do you prevent plastic tubes from becoming discolored?: To prevent plastic tubes from becoming discolored, it's important to avoid exposing them to direct sunlight and harsh chemicals, as these can cause discoloration over time. Storing them in a cool and dark place can help maintain their original color. Additionally, regular cleaning with mild soap and water can prevent any buildup or stains that may contribute to discoloration.

Q: Are plastic tubes resistant to ultrasonic cleaning?: Yes, plastic tubes are generally resistant to ultrasonic cleaning. However, the level of resistance may vary depending on the type of plastic used and the specific cleaning solution or frequency of the ultrasonic waves used. It is advisable to consult the manufacturer's guidelines or perform a test to ensure compatibility before subjecting plastic tubes to ultrasonic cleaning.

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