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Home > Industrial Equipment & Components > Valve > Gate Valve > Ductile Iron Gate Valve Supplied With Mill Test Report, CB/T3591-2005 Compliant

Ductile Iron Gate Valve Supplied With Mill Test Report, CB/T3591-2005 Compliant

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Product Spotlights

Ductile iron gate valve compliant with CB/T3591-2005, supplied with Mill Test Report for full material traceability. Features robust ductile iron construction for strength and impact resistance, flanged connections, and reliable sealing. Ideal for water, oil, and gas services. Backed by ISO9001-certified manufacturing and global export experience.

Negotiable MOQ: 1 Unit (Price negotiable depending on order volume and customization)

Key Specifications

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Material:

Other, Ductile Iron Body and Bonnet

Application:

Other, Water

Standard Compliance:

CB/T3591-2005

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Shanghai Zhibang Valve Manufacture Co.,ltd

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
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Material Other, Ductile Iron Body and Bonnet

Application Other, Water

Standard Compliance CB/T3591-2005

Documentation Mill Test Report (MTR) Supplied

End Connection Flanged Ends (Standard)

Operation Type Handwheel Operated (Standard)

Seat Material Optional (e.g., Bronze, Stainless Steel)

Stem Material Optional Stainless Steel

Pressure Rating PN10/PN16/PN25 Available

Size Range DN50 to DN600 (2“ to 24“)

As a professional manufacturer with a strong commitment to quality, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to present our premium Ductile Iron Gate Valve. Engineered for demanding industrial applications, this valve is supplied with a comprehensive Mill Test Report (MTR) and is designed in strict compliance with the Chinese national standard CB/T3591-2005. Our valves are built to provide reliable, long-lasting shut-off service in pipelines carrying water, oil, gas, and other non-corrosive media, ensuring system integrity and operational safety for our clients worldwide.

We understand that in B2B procurement, documented traceability and adherence to recognized standards are paramount. That's why every valve we produce is backed by verifiable material certification, giving you confidence in the product's origin and quality. Our manufacturing expertise, honed since our establishment in 2016, allows us to deliver valves that meet the rigorous demands of diverse markets, from North America and Europe to Southeast Asia and Africa.

Key Product Features & Technical Specifications:

Superior Material & Construction: The valve body and bonnet are manufactured from high-grade ductile iron (nodular cast iron), offering an excellent combination of strength, toughness, and impact resistance, superior to standard gray cast iron.
Full Compliance & Traceability: The valve design and manufacturing process strictly follow the CB/T3591-2005 standard for iron gate valves. A detailed Mill Test Report is provided with each shipment, certifying the chemical composition and mechanical properties of the materials used.
Reliable Sealing Performance: Features a wedge disc design that ensures tight, bubble-tight shut-off when fully closed. Seat and disc materials can be customized (e.g., bronze, stainless steel) based on service media to optimize wear resistance and service life.
Robust Stem Design: Equipped with a rising stem (OS&Y design) that provides a clear visual indication of the valve position. The stem is typically made from corrosion-resistant materials like stainless steel upon request.
Durable Operation: A sturdy handwheel allows for easy manual operation. The gland packing is designed for effective sealing and can be adjusted or replaced with the valve under pressure.
Versatile Flanged Connections: Standard flanged ends are machined to precise dimensions, ensuring easy and leak-free installation into existing pipeline systems with matching flanges.

Detailed Technical Parameters Table:

Parameter	Specification / Option
Design & Manufacturing Standard	CB/T3591-2005
Body & Bonnet Material	Ductile Iron (GGG40/50)
Pressure Rating (PN)	PN10, PN16, PN25 (Common)
Size Range (Nominal Diameter)	DN50 (2") to DN600 (24")
Temperature Range	-10°C to 120°C (Standard), higher available
End Connection	Flanged (RF, FF), other types customizable
Operation	Manual Handwheel (Standard), Gearbox optional
Test Standard	Shell Test & Seat Test per CB/T3591

Advantages and Client Benefits:

Enhanced System Reliability: The ductile iron construction provides high tensile strength and good ductility, reducing the risk of catastrophic failure under pressure surges or water hammer, leading to fewer maintenance interventions.
Simplified Procurement & Compliance: The included MTR and CB/T standard compliance simplify your vendor qualification and project documentation processes, saving you time and administrative effort.
Cost-Effective Solution: Offers an optimal balance between performance, durability, and cost, making it a preferred choice for a wide range of industrial and municipal applications where stainless steel may not be necessary.
Global Supply Chain Readiness: With major ports of shipment like Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure efficient and flexible logistics to support your project timelines anywhere in the world.

Choosing Shanghai Zhibang's Ductile Iron Gate Valve means partnering with a dedicated manufacturer whose quality management system is certified to ISO9001 standards. Our annual export value of US$1-1.5 million to over a dozen global markets, including North America, Europe, and Southeast Asia, is a testament to the consistent quality and reliability our clients have come to expect. We are committed to providing not just a product, but a dependable flow control solution backed by full material traceability and standard compliance. Contact us today to discuss your specific requirements, request a quote, or learn more about how our valves can enhance the performance of your piping systems.

Frequently Asked Questions (FAQ):

What is the main advantage of ductile iron over gray cast iron for gate valves?
Ductile iron has significantly higher tensile strength and impact resistance due to its nodular graphite structure. This makes it less brittle and more suitable for applications with potential pressure shocks, offering greater long-term reliability.
What exactly is included in the Mill Test Report (MTR)?
The MTR is a certificate from the material producer. It typically includes the heat number, chemical composition analysis (C, Si, Mn, P, S, etc.), and results of mechanical tests (tensile strength, yield strength, elongation, hardness) for the ductile iron castings used in the valve body and bonnet.
Is the CB/T3591-2005 standard recognized internationally?
CB/T is a Chinese national standard. While it is widely accepted and respected, especially in projects within China and many Asian markets, it is crucial to verify with your project specifications. We can also discuss valves manufactured to other standards like API, DIN, or BS upon request.
Can this valve be used for steam service?
The standard temperature range is suitable for low-pressure saturated steam. For higher temperature or pressure steam applications, specific material grades for trim (seat, stem) and possibly different packing must be selected. Please consult with our engineers for steam service requirements.
Do you offer actuators for these valves?
Yes. While supplied standard with a handwheel, our ductile iron gate valves can be fitted with electric, pneumatic, or hydraulic actuators. We can provide the complete assembled package to meet your automation needs.
What are the available coating or painting options for corrosion protection?
Standard valves come with a basic primer coat. We offer various external coating options, including epoxy paint, fusion-bonded epoxy (FBE), or other specialized coatings, to suit different environmental conditions (e.g., buried service, coastal areas).
What is the typical lead time for an order?
Lead time depends on the order quantity, size, and specific configuration. For standard sizes and materials, we often have stock or shorter production cycles. We provide clear lead time estimates with every quotation.
How do you ensure quality control during manufacturing?
Our ISO9001-certified system governs all processes. Quality checks include material incoming inspection, dimensional verification during machining, non-destructive testing (like MPI) of castings if required, and final hydrostatic shell and seat pressure tests as per the standard before shipment.