However, there is still a gap between the actual diameter and the DN300 of the steel pipe, because the polyethylene pipe is relatively thick. If it is more accurate to calculate the conveying capacity or use the actual inner diameter, DN is a nominal diameter after all.

At present, pe pipes are developing steadily in the municipal pipe market in China, and pe pipes, PP-R pipes and UPVC pipes all occupy a place, among which the strong development momentum of PE pipes is the most remarkable.

Extended data:

Characteristics of De3 15 Polyethylene

1, good sanitary performance: De3 15 polyethylene pipe is processed without adding heavy metal salt stabilizer, and the material is non-toxic, has no scaling layer and does not breed bacteria, which well solves the secondary pollution of urban drinking water.

2. Excellent corrosion resistance: except for a few strong oxidants, it can resist the corrosion of various chemical media; No electrochemical corrosion.

3. Long service life: PE pipes can be safely used for more than 50 years at rated temperature and pressure.

4. Good impact resistance: PE pipe has good toughness and high impact strength, and heavy objects directly press through the pipeline, which will not cause pipeline rupture.

5. Reliable connection performance: the strength of hot-melt or electric welding joint of PE pipe is higher than that of pipe body, and the joint will not be broken due to soil movement or live load.

6. Good construction performance: the pipeline is light, the welding process is simple, the construction is convenient, and the comprehensive project cost is low.

Baidu encyclopedia-polyethylene tube