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Precision FRP RO Membrane Housings & Water Treatment Systems

Since 1976, Hebei Chengda Water Technology has been a global leader in manufacturing high-performance FRP pressure vessels, softener tanks, and complete water treatment solutions. ISO, CE, NSF, and ASME certified.

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Trusted Since 1976

Hebei Chengda Water Technology Co., Ltd., established in 1976, is a professional manufacturer of water treatment products with over 200 employees and 10 dedicated engineers. Our 20-acre facility in Zaoqiang County, Hebei, China, is equipped for precision engineering and rigorous quality control.

As the maker of the Winder® and Arclion® brands, we specialize in fiberglass-reinforced plastic (FRP) membrane housings, softener tanks, filter systems, and accessories for reverse osmosis, desalination, and industrial water treatment.

48+
Years in Industry
200+
Employees
20
Acres Facility
10
Engineers
Winder1976 Manufacturing Facility

Our Product Brands

Engineered for performance, durability, and compliance with international standards.

Winder® Series

High-pressure FRP RO membrane housings from 300 PSI to 2000 PSI, DTRO/STRO vessels, and high-flow filter housings. Ideal for industrial desalination and wastewater treatment.

Since 2006 | CE, NSF, ASME Certified

Winder-G® Series

Economical 300 PSI and 450 PSI FRP RO housings. Cost-effective without compromising safety or performance. Perfect for commercial and municipal applications.

Optimized for Efficiency

Arclion® Tanks

FRP softener tanks, sand filters, oxygen cones, and specialty-shaped vessels. CE and NSF certified for residential and industrial water softening systems.

NSF 2022 | CE 2021

Our Product Range

8" FRP Membrane Housing

High-pressure vessel for reverse osmosis systems. Available in 300–2000 PSI ratings. CE and NSF certified.

  • • Diameter: 8 inches
  • • Pressure: 300–2000 PSI
  • • Material: Fiberglass Reinforced Plastic
  • • Certification: CE, NSF, ASME

FRP DTRO/STRO Housing

Designed for disc-tube and spiral-tube reverse osmosis systems. Handles high fouling potential feed water.

  • • High fouling tolerance
  • • Robust FRP construction
  • • Leak-proof sealing
  • • Burst tested at 6x design pressure

Winder-G Series RO Housing

Economical 300 PSI and 450 PSI FRP housings. Ideal for cost-sensitive commercial RO systems.

  • • 300 & 450 PSI options
  • • Lightweight & durable
  • • 100% hydrostatic tested
  • • 2-year warranty

FRP Softener Tank

CE and NSF certified FRP tanks for ion exchange water softening systems. Resistant to corrosion and scaling.

  • • 125–150 PSI rating
  • • NSF 2022 Certified
  • • Long service life
  • • Custom sizes available

High Flow FRP Filter Housing

For folding and bag filters in pre-treatment systems. High flow rate with low pressure drop.

  • • High flow capacity
  • • Low pressure loss
  • • Easy maintenance
  • • Compatible with PP, melt-blown filters

PE Brine & Chemical Tanks

Polyethylene tanks for brine storage, chemical dosing, and water storage. UV-resistant and leak-proof.

  • • 100–1000L capacity
  • • UV-stabilized PE
  • • FDA compliant
  • • Custom fittings available

Runxin Control Valves

Manual and automatic valves for sand filters, softeners, and dosing systems. Improve efficiency and automation.

  • • Manual & automatic options
  • • For softening & filtration
  • • Durable & low maintenance
  • • Spare parts available

Ion Exchange Resins

Strong/weak acid cation, base anion, chelating, and mixed bed resins for softening and demineralization.

  • • Cation & anion types
  • • High capacity
  • • Long regeneration cycles
  • • Hydrometallurgy options
View Full Product Catalog

Global Certifications

Our products meet the highest international standards for safety, performance, and quality.

ISO Certified

Quality Management Systems

CE 2021

European Conformity

NSF 2022

Drinking Water Standards

ASME 2025

Pressure Vessel Standards

Winder FRP RO housings undergo 100% hydrostatic testing at 1.1x working pressure for 5+ minutes. Burst tested at 6x design pressure. 100,000+ cycle durability tested.

Our Quality Promise

100% Testing

Every FRP housing is hydrostatically tested at 1.1x working pressure for at least 5 minutes — no sampling. Ensures zero leakage and maximum safety.

Durability Tested

Burst tested at 6x design pressure and cycled over 100,000 times to guarantee long-term reliability in harsh environments.

Get in Touch

Need samples, quotes, or technical support? Our team is ready to assist.

Contact Our Sales Team

Mia Chen – Sales
+86-18849081125 (WhatsApp, WeChat)
sales06@winder1976.com
Alina Zhang – Sales
+86-18849081129 (WhatsApp, WeChat)
sales08@winder1976.com
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