Article2026-10-31
HDPE Pipe Guide 2026: 10 Chinese Factories Compared
We compared 10 Chinese HDPE pipe factories on scale, price, certification and export readiness — plus where one-stop pipe, hose and floater supply wins.
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Products 2026-05-085 min read
SRH vs DRH: suction hose vs discharge hose
Two words, one letter — very different builds. Here's what changes inside a steel-wire dredge hose and why it matters.
SRH — built against vacuum
Sand suction hose uses high-strength spiral steel wire so the bore cannot collapse at -0.8 bar, with a 10–22 mm wear-resistant NBR liner that grows in thickness with the bore.
Typical positions: jet suction dredger suction head, pump inlet vibration damping, negative-pressure sections and booster pump inlets.
DRH — built against pressure
Sand discharge hose runs at 1.0–2.5 MPa with burst pressure at 3× working. Steel-wire versions also handle suction; fabric braid versions optimise weight and cost on discharge-only lines.
Typical positions: sand dredger discharge line, sand pump outlet, submersible slurry pump discharge, tailings transport, bends and inclines.
Shared DNA
Both come in DN 150–600 (custom to φ1600 mm), in 1–12 m lengths, with flanged, plain-end or steel-sleeve terminations and a weather/ozone/seawater resistant cover.
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Engineering
Sand Discharge Hose Pressure Ratings: What 1.0 MPa and 2.5 MPa Really Mean on Site
Guide
How to choose between rubber hose and HDPE pipe
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Floater spacing 101: keeping your HDPE main on the surface
Suction and discharge hose are priced differently. Here is the full picture of dredge hose cost per meter.
For what a sand suction rubber hose actually costs, the 2026 price guide breaks it down by size and build.
Talk to the author
Lira Kung
International Business Dept · SHANDONG HEARTWORK SUPPLY CHAIN MANAGEMENT CO., LTD.
Need a specification check, a price band or a lead-time estimate for your project? Send me the working conditions (diameter, pressure, medium, length) and I will reply personally, usually within one working day.
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