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SHANGHAI SIQING WEIHAO CORP CO.,LTD is a leading manufacturer and supplier of FRP Pressure Vessels, SS RO Housings, Dosing Pumps, and filtration systems for global water treatment applications.
With years of experience in water treatment equipment, we've evolved from a trading company to a manufacturer with our own production facilities.
SHANGHAI SIQING WEIHAO CORP CO.,LTD (Guizhou Global Trading CO.,Ltd) has developed into a combined manufacturer and trading company. We have built our own factories to produce SS RO housings, filter cartridge housings, bag filter housings, and FRP pressure vessels. Our commitment to quality and innovation ensures reliable performance across industrial, commercial, and municipal water treatment systems.
In-house production of critical water treatment components
Products exported worldwide with participation in international exhibitions
Rigorous testing and adherence to international standards
High-performance water treatment components engineered for durability and efficiency
Precision chemical dosing pumps for accurate metering in water treatment processes. Ideal for pH adjustment, disinfection, and coagulation applications.
Fiberglass reinforced plastic pressure vessel designed for reverse osmosis and filtration systems. Corrosion-resistant with high structural integrity.
Mid-size FRP housing for larger RO membrane elements. Suitable for commercial and light industrial desalination and purification systems.
Large diameter pressure vessel for high-capacity reverse osmosis systems. Engineered for industrial-scale water treatment plants.
Customizable fiberglass tanks for storage and filtration applications. Resistant to corrosion and ideal for chemical and water storage.
Stainless steel reverse osmosis housing for demanding environments. Offers superior strength and temperature resistance compared to FRP alternatives.
Housings for pleated, string-wound, and melt-blown cartridge filters. Available in various sizes and materials for pre-filtration applications.
Sturdy housings designed for bag filtration systems. Provide efficient removal of suspended solids in industrial process streams.
Complete RO system components and integration support. Custom solutions for desalination, purification, and wastewater recovery.
Tailored water treatment components based on client specifications. Engineering support for unique application requirements.
Engineered for long service life in demanding industrial environments
Consistent performance with minimal maintenance requirements
Optimized design for maximum flow and minimal pressure drop
International presence with export experience across multiple continents
Every product undergoes rigorous quality control procedures. From raw material selection to final inspection, we maintain strict standards to ensure our components perform reliably in critical water treatment applications worldwide.
Our FRP pressure vessels are constructed from high-quality fiberglass reinforced plastic with corrosion-resistant resin systems, ensuring long-term durability in water treatment applications.
Yes, we produce both FRP pressure vessels and stainless steel RO housings. Our SS housings are ideal for high-temperature applications and environments requiring maximum strength.
Yes, we offer custom fabrication services. Our engineering team can work with your specifications to produce components that meet your exact requirements.
We follow strict quality control procedures including material inspection, in-process checks, and final product testing to ensure every component meets our high standards.
Please visit our official website at drainbk.net to access product information and contact details for inquiries about catalogs and pricing.
For product inquiries, technical specifications, or partnership opportunities
Phone
86-21-20958558
Location
No.159, Nian Jiabang Dong Road, 201318, Shanghai, China
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