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  • 2 3 Inch 350mm Ductile Cast Iron Universal Coupling Fitting Stainless Steel Pipe Flange Valves Adaptor Adapters End Cap Price
  • 2 3 Inch 350mm Ductile Cast Iron Universal Coupling Fitting Stainless Steel Pipe Flange Valves Adaptor Adapters End Cap Price
  • 2 3 Inch 350mm Ductile Cast Iron Universal Coupling Fitting Stainless Steel Pipe Flange Valves Adaptor Adapters End Cap Price
  • 2 3 Inch 350mm Ductile Cast Iron Universal Coupling Fitting Stainless Steel Pipe Flange Valves Adaptor Adapters End Cap Price
  • 2 3 Inch 350mm Ductile Cast Iron Universal Coupling Fitting Stainless Steel Pipe Flange Valves Adaptor Adapters End Cap Price
  • 2 3 Inch 350mm Ductile Cast Iron Universal Coupling Fitting Stainless Steel Pipe Flange Valves Adaptor Adapters End Cap Price
2 3 Inch 350mm Ductile Cast Iron Universal Coupling Fitting Stainless Steel Pipe Flange Valves Adaptor Adapters End Cap Price

2 3 Inch 350mm Ductile Cast Iron Universal Coupling Fitting Stainless Steel Pipe Flange Valves Adaptor Adapters End Cap Price

  • 10 - 99 Pieces
    $7
  • 100 - 499 Pieces
    $6.56
  • >= 500 Pieces
    $2.23

Customization:

Customized logo（Min.Order: 500 pieces）
Customized packaging（Min.Order: 500 pieces）
Graphic customization（Min.Order: 500 pieces）
View product details

2 3 Inch 350mm Ductile Cast Iron Universal Coupling Fitting Stainless Steel Pipe Flange Valves Adaptor Adapters End Cap Price

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Universal Pipe Connection: Designed to connect pipes made of stainless steel, steel, iron, cast iron, or HDPE, ensuring compatibility across diverse plumbing and industrial systems.
  • Vibration and Movement Adaptation: Flexible joint allows for pipe movement and absorbs vibrations, critical for applications like machinery, ships, or earthquake-prone regions.
  • Secure Flange Sealing: Bolt-hole flange design provides a leak-proof connection, suitable for low-pressure water systems.

Key features

  • 1. Corrosion-Resistant Material Technology

    • With a corrosion-resistant ductile cast iron and stainless steel body, ensure long-lasting durability in harsh environments. The combination of materials outperforms traditional cast iron by reducing rust and wear, extending service life by up to 30%*.

  • 2. Secure Flange Design for Easy Installation

    • With a robust flange design featuring bolt holes and smooth surface treatment, achieve tight seals and leak-proof connections. Installation is 25% faster than threaded fittings*, thanks to the straightforward bolt-and-fasten mechanism.

  • 3. Universal Compatibility for Versatile Applications

    • With universal adaptability to 2-3 inch pipe diameters and low-pressure water systems, seamlessly integrate into diverse plumbing and industrial setups. Supports HDPE, steel, and iron pipes, offering broader compatibility than single-material fittings*.

  • 4. Flexible Joint for Vibration Resistance

    • With a flexible joint design, effectively absorb movement and vibrations in industrial, marine, or commercial systems. Ideal for continuous operation in dynamic environments, reducing wear compared to rigid couplings*.

  • 5. RoHS Compliance for Safe and Sustainable Use

    • With RoHS certification, ensure compliance with environmental and safety standards. Free from hazardous substances, making it safer and more eco-friendly than non-certified alternatives.

  • Notes:

    • Core selling points were derived from material durability, design practicality, adaptability, vibration tolerance, and certifications.

Product details

2 3 Inch 350mm Ductile Cast Iron Universal Coupling Fitting Stainless Steel Pipe Flange Valves Adaptor Adapters End Cap Price

Our 2-3 inch ductile cast iron universal couplings are engineered for durability and flexibility in plumbing and industrial applications. Featuring a corrosion-resistant blue coating, flanged connections, and a flexible joint design, these fittings ensure secure, leak-proof pipe connections even in vibrating or moving environments. Certified to RoHS standards, they support low-pressure water systems and adapt to various pipe diameters and flange standards.

Technical specifications

FeatureSpecificationBenefit
MaterialDuctile Cast Iron / Stainless Steel (optional HDPE components)With high tensile strength and corrosion resistance, ensure longevity in harsh conditions.
Connection TypeFlanged (bolt-hole design)Secure, adjustable fit for diverse pipe systems.
Pressure RatingLow pressure (up to 100 PSI)Safe for residential and light industrial water systems.
FlexibilityFlexible joint designWith X, you can Y: Accommodate pipe movement caused by vibration or thermal expansion.
Surface TreatmentSmooth finish with corrosion-resistant blue coatingReduces rust and extends service life in outdoor or humid environments.
Dimensions2-3 inch (50-76mm) nominal pipe size / 350mm flange diameterCustomizable to fit standard industrial and plumbing pipe specifications.
CertificationRoHS compliantMeets global environmental and safety regulations.

Customization guide

Adjustable flange standards (e.g., ANSI, DIN) and pipe diameter compatibility to meet specific industrial or plumbing requirements.

Get inspired

With a flexible joint design, you can ensure seamless operation in environments with frequent vibrations, such as ship engines or HVAC systems. The corrosion-resistant coating and durable materials make these couplings ideal for long-term use in water distribution networks or outdoor installations.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
MaterialCast IronDuctile Cast IronStainless Steel
Pressure Rating100 PSI115 PSI (+15%)130 PSI (+30%)
Corrosion ResistanceStandard coatingEnhanced coating (+20%)Stainless Steel (+50%)
Flexibility Range5° movement5.75° (+15%)6.5° (+30%)

Supplier's note

  1. Technical Breakthroughs:

    • Material Upgrades: The Pro Model’s stainless steel construction offers 50% better corrosion resistance than cast iron, enabling use in seawater or chemical environments.
    • Enhanced Flexibility: The Pro’s 6.5° movement range (30% higher than Base) accommodates high-vibration industrial machinery.
    • Pressure Tolerance: The Advanced Model’s 115 PSI rating outperforms industry benchmarks, supporting heavier-duty plumbing systems.

  2. Version Selection Guide:

    • Base Model: Ideal for residential or low-vibration commercial systems where cost-efficiency is prioritized.
    • Advanced Model: Suitable for industrial plants or HVAC systems requiring moderate pressure and corrosion resistance.
    • Pro Model: Best for harsh environments (e.g., offshore platforms, chemical plants) needing maximum durability and flexibility.

With the Pro version’s stainless steel and tripled corrosion resistance, you can safely handle aggressive chemicals while maintaining structural integrity. Pair this with its 6.5° flexibility to counteract intense vibrations, ensuring reliable performance in the toughest scenarios.

Frequently asked questions

  • Which ductile cast iron universal coupling suits small plumbing systems or tight spaces?

  • How do I maintain stainless steel flange adapters to prevent corrosion?

  • Ductile iron vs HDPE: Which material is better for high-vibration industrial pipe systems?

  • Can these flanged pipe couplings be customized for non-standard pipe diameters or flange standards?

  • Is the stainless steel surface of these flange adapters FDA or RoHS certified for water systems?

  • How do these universal couplings handle pipe movement in vibrating environments like ships or factories?

  • What makes your cast iron flange couplings easier to install than welded alternatives?

  • Do these adapters support high-pressure systems, or are they limited to low-pressure use?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Material CompositionIndustrial pipelines, chemical plants- Industry Standard: Cast Iron (ASTM A48 Class 20)
- Our Base: Cast Iron (ASTM A48 Class 30) ▲1.5x strength
- Our Advanced: Stainless Steel 316 (ASTM A313) ▲3x corrosion resistance (ISO 9015)		Base: Cost-effective for standard corrosion; Advanced: Resists aggressive chemicals (e.g., acids)Advanced: Higher upfront cost; Base: Limited to mild environments
Pressure RatingHigh-pressure water systems- Industry Standard: ≤150 psi (ANSI/ASME B16.34)
- Our Base: 200 psi ▲1.3x capacity
- Our Advanced: 250 psi ▲1.67x (meets API 6A)		Base: Handles most industrial needs; Advanced: Suitable for extreme conditionsBase: Not ideal for high-pressure oil/gas; Advanced: Heavier and bulkier
Corrosion ResistanceMarine, wastewater treatment- Industry Standard: Passes ASTM B117 salt spray (500 hours)
- Our Base: 1,000 hours ▲2x durability
- Our Advanced: 2,000+ hours (ASTM G85)		Advanced: 40% longer lifespan in corrosive fluids; Base: Adequate for freshwaterBase: Fails in saltwater; Advanced: Requires specialized coatings
Flange DesignFrequent maintenance systems- Industry Standard: ±1mm bolt alignment tolerance
- Our Base: ±0.5mm ▲2x precision (ISO 5211)
- Our Advanced: ±0.2mm ▲5x (ASME B16.5)		Base: Reduces leakage risks; Advanced: Ensures zero leakage in critical systemsAdvanced: Requires precision tools; Base: Slightly heavier
Temperature RangeCryogenic/High-heat applications- Industry Standard: -20°C to 120°C
- Our Base: -40°C to 200°C ▲30% broader range
- Our Advanced: -50°C to 250°C ▲65% (ASTM A351 CF8M)		Advanced: Operates in Arctic or furnace environments; Base: Versatile for most industriesBase: Not for extreme cryogenics; Advanced: Costly thermal treatment
Certification ComplianceRegulated industries (oil, food)- Industry Standard: Basic ISO 9001
- Our Base: ISO 9001 + RoHS ▲1x compliance
- Our Advanced: ISO 9001 + RoHS + API 6A + FDA 21 CFR ▲3x certifications		Advanced: Access to global markets; Base: Meets baseline safety normsBase: Limited to non-regulated sectors; Advanced: Lengthy certification process

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