Plastic Tubes HDPE Pipe ISO4427-2000 DN25

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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: Can plastic tubes be used for chemical dispensing?: Yes, plastic tubes can be used for chemical dispensing. Plastic tubes made from chemically resistant materials, such as polypropylene or polyethylene, are commonly used for dispensing various types of chemicals in laboratory and industrial settings. These tubes are designed to withstand the corrosive nature of many chemicals and ensure safe and accurate dispensing.

Q: I recently purchased some plastic tubes that have a spelling mistake. The print can be removed using some alcohol and some serious elbow grease. Does anyone know a better way to remove the print? Is there something better to use other than alcohol that won't damage the plastic bottle?Any help would be appreciated!Mike: use goo gone. You can find it at most walmarts

Q: What is the cost of plastic tubes compared to other materials?: The cost of plastic tubes is typically lower compared to other materials such as metal or glass.

Q: I have a 1 year old Robo hamster named Jewel. She has PLENTY of food (slightly chubby lol) and things to chew on..yet she is chewing on the plastic hamster tubes? She lives in a 10 gallon tank and has a silent spinner and toys (and a hut) 1.can she chew THROUGH the tube and escape? 2.can this hurt her health?: Hamster Video Tube

Q: Are plastic tubes flexible?: Yes, plastic tubes are generally flexible.

Q: What is that white plastic tube (usually made of wires inside) made of? PVC?: TPEE---- has the elasticity of the rubber and engineering plastics and rubber strength, compared, it has better processing performance and longer service life; compared with the engineering plastics, also has the characteristics of high strength, better flexibility and dynamic mechanical properties.

Q: Are plastic tubes safe for food and beverage applications?: Yes, plastic tubes are generally safe for food and beverage applications. However, it is important to note that the safety depends on the type of plastic used and its compliance with food-grade standards. Food-grade plastics, such as polyethylene and polypropylene, are commonly used for manufacturing tubes that come into contact with food and beverages. These plastics are non-toxic, resistant to chemicals, and can withstand the necessary temperatures for food and beverage applications. Additionally, it is vital to ensure that the plastic tubes are properly cleaned and maintained to prevent any contamination.

Q: where would be a good place to start looking? recycling places? arts and crafts? home depot? Im just looking for something rather cheap.: The only place I can think of would be an aquarium supply store. It won't be cheap though. You might also be able to find it at a store that sells waste collection set ups for woodworkers.

Q: I am hoping someone has designed a new, innovative style or shape of a bread box that is more functional as well. Is this a possibility or am I fantasizing about a bread box of the future? Anyone know where to buy one?: How about working with a nationally renowned woodworking artist to incorporate your thoughts with their ability at an affordable price?

Q: filling a grocery cart is not an option.: That actually happened to me once! There was an elderly lady I used to run errands for, and she asked me to go to the store to get a tube of Preparation H. So, I go to the grocery store, get the stuff (with no other purchases), and plop it down on the belt. Just my luck, a really hot guy came right behind me in line. I was so embarrassed! My advice to you would be to go to a small drug store and take it back to the pharmacy to purchase.

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