HDPE PIPE ISO4427-2000 DN225

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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: Are plastic tubes resistant to heat or fire?: Plastic tubes generally have low resistance to heat or fire. They can melt or deform when exposed to high temperatures and are considered flammable materials.

Q: Can plastic tubes be reused?: Yes, plastic tubes can be reused depending on their condition and purpose. If they are clean and undamaged, they can be washed and used again for various applications such as packaging, storage, or transportation. However, it is important to consider the type of plastic and any specific regulations or guidelines for reuse to ensure safety and effectiveness.

Q: How do plastic tubes compare to nylon tubes in terms of strength?: Plastic tubes and nylon tubes have different properties, but in terms of strength, nylon tubes are generally considered to be stronger than plastic tubes. Nylon has a higher tensile strength and is more resistant to impact, making it suitable for applications that require durability and toughness.

Q: How do plastic tubes compare to stainless steel tubes in terms of weight?: Plastic tubes typically weigh significantly less than stainless steel tubes.

Q: What kinds of plastic pipes are available? Which ones are free to deform and turn?! At the same time can bear the pressure of tap water!: General purpose thermoplastic plastic, its continuous use temperature below 100 degrees Celsius, polyethylene, polyvinyl chloride, polypropylene, polystyrene and called the four major plastic. Thermoplastic plastics are divided into hydrocarbons, polar genes of vinyl, engineering, cellulose and other types. Become soft when heated, harden when cooled, soften and harden repeatedly, and maintain a definite shape.

Q: i was thinking sterilization cause due to being a surgical instrument, but can we sterilse plastic in autoclave or UV lights? confusing question.......: Most plastic stuff comes already sterile from the manufacturer. There is the option of gas sterilization, if the tubing won't survive an autoclave. Most surgical instruments are metal and ARE re-sterilized, at least in the OR's where I work. We don't reuse tubing.

Q: PVC plastic pipe in the underground, what need to diameter, the hoop and flange is a kind of thing?: The hoop is usually used to make commonly known as pipe clamp, hose fastener with temporary fasteners, also can be used for temporary plugging. Flanges are also called flanges or flanges.

Q: Are plastic tubes resistant to weathering?: Plastic tubes can vary in their resistance to weathering depending on the type of plastic used. Some plastics are more prone to degradation when exposed to sunlight, extreme temperatures, or harsh weather conditions, while others are designed to be more resistant. It is important to consider the specific plastic material and its intended use when determining its level of weathering resistance.

Q: How are plastic tubes labeled for identification?: Plastic tubes are typically labeled for identification using various methods such as printed labels, adhesive tapes, color coding, or embossed markings.

Q: Are plastic tubes suitable for agricultural irrigation?: Yes, plastic tubes are suitable for agricultural irrigation. They are lightweight, durable, and resistant to corrosion, making them ideal for transporting water in agricultural settings. Additionally, plastic tubes can be easily installed, maintained, and have the flexibility to adapt to different terrain and irrigation systems.

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