HDPE PIPE ISO4427-2000 DN250

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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:the teacher in item 5 needs to order plastic tubing.if each of the 60 students needs 750mm of tubing?
1000 mm = 1m 60*750mm(1m/1000mm) = 45 m best answer?
Q:Is the electric pipe used with steel pipe and PVC pipe?
In industrial designs, galvanized steel tubes are generally used for laying electric tubes, especially in the case of explosion protection.The benefits of galvanized steel pipe is not easy to damage, can prevent the destruction and damage of environmental forces to a certain extent, a junction box, check for export, export lines and other accessories, construction and maintenance in explosion-proof environment can be exempted from hot work. The disadvantage is higher cost.The PVC tube is less costly, but less impact resistant.
Q:how do you get 2 pieces of plastic tube unstuck?
Are they PVC? Is there a joint or fitting over them (a bigger piece of PVC that both tubes fit into)? Did someone else assemble it (or did you assemble it with a PVC glue)? If you answered yes to all three of these, you are in trouble. PVC is often assembled with glues which can be very difficult or impossible to undo. It is often easier to just cut the PVC and then extend it with a new joint.
Q:Where can i find small clear flexible tubing.?
Your local hardware store.
Q:How do I retrieve tube and brush hog in bass fishing?
Bass WILL hit a motionless bait. With a carolina rig, it is all about keeping it on the bottom. Try to drag the weight on the bottom as much as possible, that makes noise, which attracts the fish. As far as how to reel it in, try a lot of different techniques until you get a bite, then try to duplicate what you were doing. But the most important thing with a c-rig is to keep that bait on the bottom, just drag it along, eventually something will grab it. Good luck.
Q:Is it safe to clean Katadyn water pump tubes in dishwasher soap?
Use a weak chlorine bleach solution.
Q:I need to fix a leaky bathrm. sink. It's directly underneath the sink, and is a plastic tubing.?
its one of the water supply lines it is easy to fix first turn off the water to the sink it should have a valve you turn clockwise to turn the water off get an adjustable wrench which you can get from any home depot type store use the wrench to remive the line the top one may be tricky because of the small area and you might can get it with your hand just have to see what works also get a pair of small channel lock type pliers to help with the line disassembly and then take the line to home depot and they can find one that will work then put it back together like you took it apart and turn the check for leaks
Q:What is the name of the popsicle that comes in a plastic tube and breaks in half?
Ice Pops In Plastic Tubes
Q:Quality inspection station said that the ceiling does not let go PVC tube, I did not find evidence
The new regulations do not make regulations, but only stipulates that rigid plastic pipe (trough) has a strong acid and alkali corrosion resistance, and moisture resistance is good, should be given priority in wet and acid, caustic corrosion sites.
Q:my GE washing machine as a plastic discharge tube with a 6 gooseneck?
Normally the plastic part that forms the n shaped bend can be unclipped and moved up the hose so you can get a longer length into the discharge stand pipe. If the pipe is too short to reach the stand pipe when you do this, you can buy an extension kit from a hardware store.

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