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: What's the meaning of the laying of brick and concrete structures with concealed pipes?: Line pipe laying:The wires are laid in bricks or concrete. There are two ways:Insert the wire tube and the bottom box before pouring;After the end of the masonry, slotted into the wire pipe and the bottom box, and then fill the groove.

Q: ive heard stories about syrian hamsters getting stuck in tubes.: wellll keep in shape and it will be fine

Q: What is the expansion joint in the drain pipe?: Long distance pipeline when temperature changes and thermal expansion and contraction, in order to protect the pipeline in thermal expansion and contraction when damage to the pipeline will not be guaranteed not to leak, in the case of pipeline thermal expansion and contraction play a regulatory role, so as to avoid pipeline break or split up

Q: Can plastic tubes be used for aquariums or fish tanks?: Yes, plastic tubes can be used for aquariums or fish tanks.

Q: Are plastic tubes safe for storing cosmetics?: Yes, plastic tubes are generally safe for storing cosmetics. However, it is important to ensure that the plastic used is of high quality and free from any harmful chemicals that could potentially leach into the cosmetics. Additionally, it is advisable to check if the plastic tubes are BPA-free and meet the necessary safety standards before using them for storing cosmetics.

Q: What are the disadvantages of using plastic tubes?: One major disadvantage of using plastic tubes is their negative impact on the environment. Plastic is not biodegradable and can take hundreds of years to decompose, leading to pollution and harm to ecosystems. Additionally, plastic tubes often require the extraction and processing of fossil fuels, contributing to greenhouse gas emissions and climate change. Moreover, plastic tubes can leach harmful chemicals into the substances they contain, posing health risks. Lastly, plastic tubes are less durable compared to other materials, making them prone to breakage and requiring frequent replacements, increasing waste generation.

Q: Considering it sort of a plumbing project... also, if possible, keep it as cost-effective as possible? Is there a particular fitting I need to use? And I want the tube to connect internally (tube is inside fitting) as opposed to externally.Thanks in advance!: You would be looking for a Compression fitting that is suited for plastic tubing. Ask at your hardware store.

Q: Are plastic tubes fire resistant?: No, plastic tubes are generally not fire resistant.

Q: At night my hamster wakes up and plays and stuff, well he has these plastic tubes that he can climb up to get to different areas of his cage, he likes to chew on them. My only problem is that it is REALLY loud and I hate the scraping sound it makes. I don't want to take out the tubes because then he would have nothing to play in. And I don't have the money to get him a new cage/glass aquarium and I really would like him to stay with the cage he has now, it's an all plastic cage except the metal bars to keep him in,lol, the brand is Super Pet Critter Trail if you want to loo it up to see what I'm talking about. Me and my mom have tried rubbing lemon juice on it but he liked the taste -.- please help?: I've had hamsters escape from cages with tubes after they have chewed holes. I'd recommend getting an all wire cage or glass terrarium asap.

Q: Are plastic tubes suitable for underground installations?: No, plastic tubes are not generally suitable for underground installations as they may not possess the necessary strength and durability to withstand the pressure and environmental factors associated with underground conditions.

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