HDPE Water Supply Pipe

HDPE Water Supply Pipe

HDPE water supply pipes are a new type of plastic pressure piping manufactured via extrusion using high-density polyethylene (HDPE) as the primary raw material. Characterized by hygiene and non-toxicity, corrosion resistance, smooth inner walls, excellent toughness, ease of installation, and a long service life, they are widely used in diverse water conveyance projects—including municipal water supply, rural drinking water systems, indoor and outdoor building plumbing, and industrial park water supply. They serve as an environmentally friendly, preferred alternative to traditional metal and concrete pipes.

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Product Overview

Key Product Features

Hygienic, non-toxic, safe, and eco-friendly: Manufactured using food-grade HDPE resin, the pipes are odorless and free from harmful substance leaching. They comply with national drinking water hygiene standards, are suitable for conveying potable water without causing secondary pollution, and are 100% recyclable, aligning with sustainable development principles
Corrosion and aging resistance: The polyethylene material resists acids, alkalis, salt spray, and soil corrosion, eliminating the need for additional anti-corrosion treatments and making it suitable for complex soil environments (such as acidic or saline-alkali soils). Formulated with specialized UV stabilizers and compliant carbon black content, the pipes effectively withstand sunlight exposure and resist aging, making them ideal for both underground and exposed outdoor installations
Smooth inner wall for efficient water transport: The smooth, burr-free inner wall minimizes fluid friction and flow resistance. Compared to traditional piping, it offers superior flow capacity, resists sediment buildup, ensures stable flow rates over the long term, and reduces energy consumption during water transport
Excellent toughness and resistance to impact and settlement: The PE material offers exceptional toughness and impact resistance, preventing breakage. It accommodates minor uneven foundation settlement and outperforms metal or concrete pipes in seismic resistance, making it suitable for earthquake-prone areas and regions with complex geological conditions
Convenient installation and high efficiency: The pipes are lightweight (only 1/8 to 1/10 the weight of concrete pipes), making handling and laying less labor-intensive. Primary connection methods include butt fusion and electrofusion, ensuring seamless, leak-proof joints. Steel-plastic transition fittings or specialized flanges allow for connections to metal pipes, valves, and fire hydrants, resulting in high installation efficiency and significantly shorter project timelines
Long service life and low O&M costs: Under normal operating conditions, the service life exceeds 50 years, eliminating the need for frequent replacement. The pipes are wear-resistant and resistant to scaling, simplifying maintenance and significantly reducing long-term operation and maintenance costs
Precautions: The pipe material has relatively low strength; impacts or crushing forces from hard rock or metal objects can easily cause dents or even punctures. It is not flame-retardant, and there are limits on the maximum operating pressure. Storage requirements are strict; prolonged exposure to sunlight and rain should be avoided, as this accelerates aging and reduces service life.

Product Specifications & Parameters

Material Grade

Uses PE100-grade high-density polyethylene (HDPE) resin (current standards mandate the use of PE100-grade virgin material for water pipes, discontinuing the use of PE80 grade); PE80-grade products can be customized for specific applications. The resin content is no less than 95%, complying with the material classification requirements for thermoplastic pipes set forth in the national standard GB/T 18475

Nominal Outside Diameter (de) and Nominal Pressure (PN)

Nominal outer diameter(dn)	Nominal wall thickness en/mm
	SDR41	SDR33	SDR26	SDR21	SDR17	SDR13.6	SDR11	SDR9
	PE100 grade nominal pressure (MPa)
	0.4MPa	0.5MPa	0.6MPa	0.8MPa	1.0MPa	1.25MPa	1.6MPa	2.0MPa
	mm	mm	mm	mm	mm	mm	mm	mm
20	-	-	-	-	-	-	2.3	2.3
25	-	-	-	-	-	2.3	2.3	3.0
32	-	-	-	-	2.3	2.4	3.0	3.6
40	-	-	-	2.3	2.4	3.0	3.7	4.5
50	-	-	2.3	2.4	3.0	3.7	4.6	5.6
63	-	-	2.5	3.0	3.8	4.7	5.8	7.1
75	-	-	2.9	3.6	4.5	5.6	6.8	8.4
90	-	-	3.5	4.3	5.4	6.7	8.2	10.1
110	-	-	4.2	5.3	6.6	8.1	10.0	12.3
125	-	-	4.8	6.0	7.4	9.2	11.4	14.0
140	-	-	5.4	6.7	8.3	10.3	12.7	15.7
160	-	-	6.2	7.7	9.5	11.8	14.6	17.9
180	-	-	6.9	8.6	10.7	13.3	16.4	20.1
200	-	-	7.7	9.6	11.9	14.7	18.2	22.4
225	-	-	8.6	10.8	13.4	16.6	20.5	25.2
250	-	-	9.6	11.9	14.8	18.4	22.7	27.9
280	-	-	10.7	13.4	16.6	20.6	25.4	31.3
315	7.7	9.7	12.1	15.0	18.7	23.2	28.6	35.2
355	8.7	10.9	13.6	16.9	21.1	26.1	32.2	39.7
400	9.8	12.3	15.3	19.1	23.7	29.4	36.3	44.7
450	11.0	13.8	17.2	21.5	26.7	33.1	40.9	50.3
500	12.3	15.3	19.1	23.9	29.7	36.8	45.4	55.8
560	13.7	17.2	21.4	26.7	33.2	41.2	50.8	62.5
630	15.4	19.3	24.1	30.0	37.4	46.3	57.2	70.3
710	17.4	21.8	27.2	33.9	42.1	52.2	64.5	79.3
800	19.6	24.5	30.6	38.1	47.4	58.8	72.6	89.3
900	22.0	27.6	34.4	42.9	53.3	66.2	81.7	-
1000	24.5	30.6	38.2	47.7	59.3	72.5	90.2	-
1200	29.4	36.7	45.9	57.2	67.9	88.2	-	-

Applicable Standards

Standard Lengths

Standard lengths: 6m, 9m, and 12m; special lengths can be customized based on project requirements. Coil lengths are adjustable according to pipe diameter, and the inner coil diameter complies with relevant standards

Appearance Requirements

The pipe is black with three or more extruded blue stripes evenly distributed around its circumference. The inner and outer surfaces are smooth and clean, free from bubbles, scratches, dents, color variations, or impurities. Both ends of the pipe are cut flat and perpendicular to the longitudinal axis

Applicable Standards

Core standard: GB/T 13663.2-2018 "Polyethylene (PE) piping systems for water supply—Part 2: Pipes"

Reference standards: GB/T 13663.1-2017 "Polyethylene (PE) piping systems for water supply—Part 1: General"; GB/T 18475-2017 "Classification and designation of materials for thermoplastic pressure pipes and fittings—Overall service (design) coefficient"

Scope of Application

Municipal water supply projects: Urban tap water networks, as well as the laying of main and branch lines for municipal water supply and drainage;
Rural drinking water safety projects: Centralized and decentralized rural water supply pipelines to address drinking water challenges;
Building water supply projects: Indoor and outdoor water supply pipelines for residential buildings, commercial complexes, office buildings, and industrial facilities, including systems for domestic and fire-fighting water;
Industrial water supply projects: Transport of clean water and process water within industrial parks and factory workshops (excluding highly corrosive media);
Other applications: Pipelines for landscape irrigation and agricultural irrigation, as well as temporary water supply projects (e.g., temporary water supply for construction sites).

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