Precision Engineering
Cast Iron Threaded Flanges

Leading the structural metal fabrication industry with high-performance cast iron threaded flanges designed for maximum durability and leak-proof sealing in the most demanding industrial piping systems worldwide.

500K+
Annual Output
120+
Countries Served
7 Days
Sample Lead Time
99.8%
On-Time Delivery

Industrial Excellence
& Technical Mastery

Defining the gold standard in structural metal manufacturing for heavy-duty piping applications.

As a global leader in the structural metal fabrication sector, we specialize in the production of the cast iron threaded flange, which serves as a critical component in fluid transport systems. Our industry position is built upon uncompromising quality control and the ability to produce high-precision components that withstand extreme pressure and corrosive environments.

Our technical advantage lies in the integration of advanced centrifugal casting and CNC precision threading. By utilizing high-grade ductile and gray cast iron, our cast iron threaded flange ensures a superior seal and exceptional vibration damping, reducing maintenance costs and extending the lifecycle of industrial infrastructure.

Our Three
Engineering Pillars

The foundations of our superiority in structural metal manufacturing.

01

Material Integrity

Focusing on the molecular stability and purity of cast iron alloys.

  • ▪Alloy Optimization: Enhanced graphite distribution for better stress relief.
  • ▪Corrosion Resistance: Specialized coatings for acidic environments.
  • ▪Thermal Stability: Stable performance across -20°C to 400°C.
02

Precision Machining

Utilizing 5-axis CNC systems for perfect threading and facing.

  • ▪Thread Accuracy: Zero-tolerance fit for leak-free connections.
  • ▪Surface Finish: Ra 1.6 micron finish for optimal gasket seating.
  • ▪Dynamic Balancing: Minimized vibration during fluid transit.
03

Quality Assurance

Rigorous testing protocols for every batch produced.

  • ▪Hydrostatic Pressure Testing for every single unit.
  • ▪X-Ray internal flaw detection for casting voids.
  • ▪Spectrometric chemical analysis for material purity.

Market Analytics
& Performance Metrics

Data-driven insights into our manufacturing efficiency and product superiority.

Market Distribution by Grade

Comparative Performance Index

Technical Data
Specifications

Comprehensive engineering parameters for the cast iron threaded flange series.

Flange Model
Nominal Size
Material
Pressure Rating
Threading Standard
Weight (kg)
CI-T100-S1
DN100
Ductile Iron
PN16
BS 21
4.2
CI-T150-S1
DN150
Ductile Iron
PN16
BS 21
6.8
CI-T200-S1
DN200
Ductile Iron
PN10
ANSI B1.20.1
11.5
CI-T50-G1
DN50
Gray Iron
PN10
BS 21
1.8
CI-T80-G1
DN80
Gray Iron
PN10
BS 21
2.9
CI-T125-S2
DN125
Ductile Iron
PN25
ANSI B1.20.1
5.5
CI-T250-S1
DN250
Ductile Iron
PN10
BS 21
18.2
CI-T300-S1
DN300
Ductile Iron
PN10
ANSI B1.20.1
25.4

Real-World
Impact

Proven reliability across global infrastructure projects.

Nordic Energy Grid

District Heating

Installation of 5,000+ threaded flanges in extreme sub-zero temperatures, ensuring zero leakages over 3 years.

Reliability: 100% Temp: -40°C

Gulf Oil Refinery

Chemical Piping

Replacement of corroded joints with high-grade ductile cast iron flanges, increasing system pressure capacity.

Pressure Up: 25% Lifespan: +10Y

Asian Metro Waterworks

Municipal Infrastructure

Large scale implementation of threaded flanges for rapid assembly of municipal water distribution networks.

Install Time: -30% Cost: Low

Tesla-Scale Factory

Industrial Cooling

Precision threaded flanges used in closed-loop cooling systems to prevent micro-leaks in high-tech environments.

Leak Rate: 0% Tolerance: ±0.01mm

Amazonia Mining Site

Slurry Transport

Implementation of heavy-walled cast iron flanges to resist abrasion from mineral slurry transport pipelines.

Wear Rate: -40% Durability: High

Euro-Pharm Lab

Pure Water Systems

Providing sanitary-grade cast iron threaded flanges for high-purity water distribution in pharmaceutical plants.

Purity: Grade A Compliance: FDA

Industry
Applications

Tailored solutions for demanding environments.

Oil & Gas Sector

Used in pipeline manifolds and refinery feed lines where high pressure and chemical resistance are mandatory.

HVAC Systems

Ideal for commercial chilled water loops and heating systems due to excellent vibration damping properties.

Water Management

Deployed in municipal water treatment plants and desalination facilities for durable pipe coupling.

Fire Protection

Critical for sprinkler main lines and hydrant connections where structural stability under shock is vital.

Agriculture Irrigation

Providing cost-effective and robust coupling for large-scale farm irrigation and water diversion.

Mining Operations

Engineered for abrasive environments and heavy-duty slurry pumps in open-pit and underground mining.

Quality Assurance
& Export Standards

ISO 9001 Certified Processes

Our manufacturing follows stringent ISO quality guidelines, ensuring that every batch of flanges meets global consistency and safety standards.

Advanced NDT Testing

We employ Non-Destructive Testing (NDT) including Ultrasonic and Magnetic Particle inspection to guarantee structural integrity.

Global Export Compliance

All products are verified against ASME and DIN standards, facilitating seamless integration into international piping projects.

Trust Verified

Certified by the leading global auditing bodies for metallurgical excellence and sustainable manufacturing.

✓ ASTM A536 Compliance ✓ CE Marking ✓ SGS Inspected

Frequently Asked
Questions

Expert answers to common technical and commercial inquiries.

01

What is the main advantage of a cast iron threaded flange?

The cast iron threaded flange offers superior vibration damping and cost-effectiveness compared to steel alternatives, making it ideal for water and low-pressure steam systems.

02

How do you ensure the threads are leak-proof?

We use precision CNC threading and perform hydrostatic pressure tests on every batch to ensure a perfect seal according to BS 21 or ANSI standards.

03

Can these flanges be customized for specific pressure ratings?

Yes, we offer a range of pressure ratings from PN10 to PN25, and can customize wall thickness to meet specific structural requirements for your project.

04

What material is better: Ductile Iron or Gray Iron?

Ductile iron is preferred for applications requiring higher tensile strength and impact resistance, while gray iron is excellent for maximum damping and cost efficiency.

05

What are the standard lead times for bulk orders?

Depending on the quantity and specifications, bulk lead times typically range from 15 to 30 days, with expedited shipping available for urgent projects.

06

Do you provide material test certificates (MTC)?

Absolutely. Every shipment of our cast iron threaded flange comes with a full MTC documenting chemical composition and mechanical properties.

Optimize Your Piping Infrastructure

Partner with the experts in structural metal manufacturing for high-precision cast iron threaded flanges.

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