HDPE Dredging Pipe

HDPE Dredging Pipe

HDPE dredging pipes (high-density polyethylene dredging pipes) are manufactured via extrusion using high-quality HDPE raw materials. They are specifically designed for material transport applications such as river desilting, sand pumping, port dredging, and the transport of slurry, tailings, and fill material for land reclamation. These pipes feature excellent wear resistance, impact strength, flexibility, and corrosion resistance. They can be configured as straight pipes paired with floats for floating pipeline systems or buried underground as main slurry transport lines; serving as a replacement for traditional steel pipes, they significantly reduce project costs. Products can be manufactured to meet national or export standards, with testing reports and ISO system certifications available.

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Product Overview

Key Product Features

High Abrasion Resistance: HDPE material offers superior wear resistance compared to standard steel pipes; it exhibits minimal wall wear when transporting granular media such as silt or slag, resulting in a longer service life.
Excellent Flexibility and Impact Resistance: High toughness allows the pipe to withstand wave action and riverbed settlement; the floating pipe rises and falls with the water surface and resists breakage, making it ideal for marine dredging operations.
Corrosion and Scaling Resistance: Resistant to corrosion from seawater, saline-alkali environments, sewage, and acidic or alkaline slurries; it does not rust like steel pipe, and the smooth inner wall prevents sediment buildup.
Lightweight and Easy to Install: Low material density significantly reduces weight compared to steel pipe, enhancing efficiency in handling, lifting, and aquatic installation; can be paired with pontoons to form floating pipeline systems.
Reliable, Leak-Free Connections: Utilizes butt-fusion welding technology to create a seamless, integrated joint where the weld strength exceeds that of the pipe body itself, ensuring no leakage during the transport of slurry or seawater.
Aging Resistance: Black piping incorporates UV-resistant carbon black masterbatch, ensuring durability and resistance to aging or cracking during long-term outdoor or aquatic use.

Product Specifications & Parameters

Common Specifications and Parameters

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	-	-

Pressure rating: PN4, PN6, PN8, PN10, etc. (selected based on dredging delivery pressure)

Standard length: 6m per straight pipe; custom lengths available for large-diameter pipes

Accessories: Butt-fusion elbows, tees, flange adapters, floats/pontoons, pipe caps, etc.