The development history of HDPE pipes

May. 19,

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HDPE pipes

are widely used in municipal engineering. High-density polyethylene

The first generation of HDPE pipes grade resin comonomer content is very low, in order to improve performance, it must be compensated by increasing the molecular weight.

The second-generation resin is the current

material, and the comonomer content is increased on the basis of the first-generation resin. The main disadvantage is that if the ESCR performance is further improved, the pressure resistance of the material will be greatly lost, thereby reducing the pressure level of the extruded tube using this material. On the other hand, if the pressure level is to be further increased, the possibility of brittle failure will increase before 50 years (required life) at 20°C, which is difficult to achieve.

The third generation resin is

HDPE pipes has been used for nearly half a century. From the first water pipes to gas and other fields; initially low-density polyethylene (LDPE) was used, then high-density polyethylene (HDPE) and medium-density polyethylene (MDPE).are widely used in municipal engineering. High-density polyethylene

HDPE

raw materials came out in . Due to the insufficient technical level of plastic products at that time, there was no mature HDPE plastic products, and it was not widely used until later. PE has excellent resistance to most household and industrial chemicals. PE tube is a translucent packaging material with high crystallinity, white powder or granular, non-toxic, tasteless, and high hardness.The first generation of HDPE pipes grade resin comonomer content is very low, in order to improve performance, it must be compensated by increasing the molecular weight.The second-generation resin is the current

PE80

material, and the comonomer content is increased on the basis of the first-generation resin. The main disadvantage is that if the ESCR performance is further improved, the pressure resistance of the material will be greatly lost, thereby reducing the pressure level of the extruded tube using this material. On the other hand, if the pressure level is to be further increased, the possibility of brittle failure will increase before 50 years (required life) at 20°C, which is difficult to achieve.The third generation resin is PE100 which appeared in the late s.

PE100

has a bimodal molecular weight distribution, and the comonomer is preferentially located on the longer molecular chain, which makes the third-generation HDPE pipes resin have higher density or rigidity, 20°C, 50 years of creep resistance; while maintaining better Good ESCR performance.

November 08,

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The materials and installation methods used to install pipe have evolved considerably over time; beginning with wood, terracotta tile, cast concrete, iron pipe, and galvanized steel, bringing us to today with the material of choice being 

thermoplastics.

Beginning in the s, the two primary thermoplastic materials used in extrusion, the process used to manufacture pipe, have been HDPE and PVC (polyvinylchloride). 

The industry experienced a significant increase in demand for HDPE pipe when companies sought to add capacity in major metropolitan areas by removing traditional copper cables and replacing them with small diameter, fiber optic cables.

 

It was the introduction of trenchless installation methods, such as horizontal directional drilling (HDD) and pull or chute plowing that significantly contributed to the wider adoption of HDPE pipes. When coupled with the HDPE pipe&#;s long reel lengths, trenchless installations are much less intrusive to existing roadways, infrastructure and landscaping, and can reduce installation costs.

Whether it is above or below ground, HDPE pipe continues to be the material of choice as utilities expand their distribution infrastructure in urban and rural areas, and as communication companies increase availability of network bandwidth to meet the needs of the connected population.

HDPE pipe facilitates communication network expansion through a variety of features, benefits, and product offerings such as microducts, color coding, Cable-in- pipe (CIC), and various packaging methods are explained in the HDPE Product.