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Industrial Water Treatment Solutions

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.

FRP Pressure Vessel

About Us

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.

Manufacturing Expertise

In-house production of critical water treatment components

Global Reach

Products exported worldwide with participation in international exhibitions

Quality Assurance

Rigorous testing and adherence to international standards

Our Products

High-performance water treatment components engineered for durability and efficiency

Dosing Pump

Dosing Pump

Precision chemical dosing pumps for accurate metering in water treatment processes. Ideal for pH adjustment, disinfection, and coagulation applications.

2.5 insh FRP Pressure Vessel

2.5 insh FRP Pressure Vessel

Fiberglass reinforced plastic pressure vessel designed for reverse osmosis and filtration systems. Corrosion-resistant with high structural integrity.

4 insh FRP Pressure Vessel

4 insh FRP Pressure Vessel

Mid-size FRP housing for larger RO membrane elements. Suitable for commercial and light industrial desalination and purification systems.

8 insh FRP Pressure Vessel

8 insh FRP Pressure Vessel

Large diameter pressure vessel for high-capacity reverse osmosis systems. Engineered for industrial-scale water treatment plants.

FRP Tank

FRP Tank

Customizable fiberglass tanks for storage and filtration applications. Resistant to corrosion and ideal for chemical and water storage.

2.5 inch SS RO Housing

2.5 inch SS RO Housing

Stainless steel reverse osmosis housing for demanding environments. Offers superior strength and temperature resistance compared to FRP alternatives.

Filter Cartridge Housings

Housings for pleated, string-wound, and melt-blown cartridge filters. Available in various sizes and materials for pre-filtration applications.

Bag Filter Housings

Sturdy housings designed for bag filtration systems. Provide efficient removal of suspended solids in industrial process streams.

Reverse Osmosis Systems

Complete RO system components and integration support. Custom solutions for desalination, purification, and wastewater recovery.

Custom Fabrication

Tailored water treatment components based on client specifications. Engineering support for unique application requirements.

Why Choose Our Products

Durability

Engineered for long service life in demanding industrial environments

Reliability

Consistent performance with minimal maintenance requirements

Efficiency

Optimized design for maximum flow and minimal pressure drop

Global Support

International presence with export experience across multiple continents

Proven International Presence

Exhibited at AQUATECH USA 2013
Participated in Dubai WETEX 2010 and 2017
Attended Aquatech Amsterdam 2011
Present at Moscow ECWATECH June 2012

Quality Commitment

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.

10+
Years Experience
50+
Countries Served
1000+
Products Delivered
15+
Global Exhibitions

Frequently Asked Questions

What materials are used in your FRP pressure vessels?

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.

Do you manufacture both FRP and stainless steel RO housings?

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.

Can you customize product dimensions?

Yes, we offer custom fabrication services. Our engineering team can work with your specifications to produce components that meet your exact requirements.

What quality control measures do you implement?

We follow strict quality control procedures including material inspection, in-process checks, and final product testing to ensure every component meets our high standards.

How can I request a product catalog or pricing?

Please visit our official website at drainbk.net to access product information and contact details for inquiries about catalogs and pricing.

Get in Touch

For product inquiries, technical specifications, or partnership opportunities

Phone

86-21-20958558

Email

[email protected]

Location

No.159, Nian Jiabang Dong Road, 201318, Shanghai, China

Visit Official Website to Contact

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