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

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Q:What is the best re-cycling method for plastic bottles & tubes?
There are many good reasons for recycling bottles, which saves energy, water and resources. Often the material can be recovered and refashioned into new bottles. But whole or partial containers can also be used in engaging, creative ways by individuals. See some of these innovative green designs here. I've been seeing flattened wine bottle serving trays for years at funky eco-boutiques and in catalogs, and I've always thought they were pretty cool. They come in many different colors and labels, and can be used as paddles if someone forgot to bring the brie. I hope people would try to recycle these bottles. :) Miana
Q:(Liquid cooling) Copper tubing vs. Plastic tubing?
Copper is better bang but needs to be bent for each component. Plastic is flexible and just needs to be cut to length
Q:do I need the plastic tube to bleed my clutch acura integra?
Yes get a one man bleeder kit ,there very cheap ,it will have a syringe that will get bleeding started then it will just gravity bleed, I have Never needed a second person with Integra ,very easy job , I have done over 100 clutch masters ill bet all with a perfect pedal when i was done,,if you replaced slave cylinder you wasted your money ,,20 years on acura cars I never seen one leak ,good luck...O Also don't go nuts worrying about old fluid soaked rags and such . just don't get on paint,..and its water soluble so if you do just hose it off ..i never seal old rags in plastic bags and crap like that like the other dude said ,i respect he does but its overkill ..lol
Q:How to connect the plastic pipe and the steel pipe joint?
PPR pipe and steel pipe have special pipe fittings, such as internal thread direct, external thread direct, internal thread elbow, outer thread elbow, inner thread three links, and so on.
Q:How to distinguish between hard plastic pipes and flame retardant plastic pipes?
If you can use the oxygen index method in the laboratory to distinguish, in general, the rigid plastic pipe oxygen index is lower than the flame-retardant plastic
Q:how do they put tubes in your ears?
If you are talking about grommets - plastic tubes through the ear drums - this usually involves a general anaethetic Once the patient is anaesthetised, the ENT doctor makes a hole in the ear drum and then pushes the grommet through and then goes and does the other ear.
Q:How can plastic pipes be connected to steel valves?
Valve such as flange valve, then PVC-U pipe and valve connection should be flange connection. Connecting with the plastic pipe and flange with flange bonding, also can use hemmed or band.(2) connect the PP-R tube and the valve threaded valve valves such as: 1) is, should use external thread transition joints, the transition joints at one end of the external thread, the other end is connected with hot melt socket PP-R plastic pipe.2) the valve, such as the external thread valve, should use the internal thread transition joint, one end of the transition joint is internally threaded, and the other end is a socket which can be connected with the PP-R plastic pipe by hot melting.3) valve, such as flange valve, then PP-R pipe and valve connection should be flange connection. Connecting with the plastic pipe and flange can be used hot melt connection, flange can be used hemmed or band.(4) PE pipe, PB pipe and valve connection, method with PP-R tube.(5) the connection of PVC-C pipe, ABS pipe and valve, the way is the same as the PVC-U pipe.(6) PE-X pipe, PAP pipe, these two types of tubes, pipe specifications smaller, the pipe connection is card sleeve connection and compression connection, and the valve should be used to clamp or clamp sleeve transition joint.
Q:when u have laproscopic surgery do they stick a tube down your throat. if so what does it help do.?
Yes, you will undergo general anesthesia, the tube is to breath for you while you are having surgery. You will be hooked up to a ventilator.
Q:What are the ways to remove the taste in plastic pipes?
Method for removing peculiar smell of plastic pipe by milk. Clean with detergent first, then immerse the plastic pipe in the fresh milk for about one minute. Finally, pour out the milk and clean the plastic pipe;
Q:Hot melt connection method of PE-RT plastic pipe and the matters needing attention
When welding elbow or three way, according to the design drawing requirements, should pay attention to the direction, in the pipe fittings and pipe in the straight direction, with auxiliary sign mark its position;

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