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Restraint Flange Adaptor for HDPE Pipe DN500 DN600

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Secure HDPE Pipe Connection: Designed to connect HDPE pipes of DN500 and DN600 sizes via a flange interface, ensuring leak-proof and high-pressure resistance.
  • Thermal Stress Management: Restrains pipe movement under thermal expansion/contraction, preventing damage in fluctuating temperature environments.

Key features

  • 1. Corrosion-Resistant Material Technology

  • With a corrosion-resistant HDPE and blue-coated iron alloy body, ensure long-lasting durability in harsh industrial environments. The HDPE material resists chemical erosion, while the iron alloy and protective coating outperform traditional all-metal fittings by 25% in corrosion resistance*.

  • 2. User-Friendly Interactive Design

  • With 12 hexagonal bolt-and-nut fasteners, achieve 20% faster installation and maintenance compared to standard flange adaptors with fewer securing points*. The evenly spaced design simplifies alignment and ensures secure connections under pressure.

  • 3. High-Pressure Performance Parameters

  • With a heavy-duty casting construction, withstand pressures up to 200 bar—30% higher than conventional flange adaptors*. This makes it ideal for large-scale systems requiring robustness in high-stress applications.

  • 4. Versatile Scenario Solutions

  • Designed for DN500-600 HDPE pipes, support seamless integration into commercial and industrial plumbing systems. Its restraint design reduces pipe movement by 40% compared to non-restraint adaptors*, enhancing safety in high-flow environments.

  • 5. Global Certification Standards

  • Backed by ISO 9001 and CE certifications, guarantee compliance with international quality and safety standards*. These certifications ensure superior reliability over non-certified alternatives*.

Product details

Restraint Flange Adaptor for HDPE Pipe DN500 DN600

The Restraint Flange Adaptor for HDPE Pipe DN500 DN600 is a heavy-duty industrial fitting designed to securely connect high-density polyethylene (HDPE) pipes in plumbing and industrial systems. Engineered with corrosion-resistant materials and robust construction, it ensures leak-proof performance under high pressure and temperature.


Technical specifications

FeatureSpecificationBenefit
MaterialIron (corrosion-resistant alloy) + HDPE (high-density polyethylene)Combines metal durability with HDPE's chemical resistance and flexibility.
Connection TypeFlange couplingEnsures secure, pressure-resistant pipe alignment.
Shape & DesignRound, equal diameter, 12 bolt-secured clampsUniform stress distribution and easy assembly/disassembly.
CertificationsISO 9001 (quality management), CE (safety compliance)Meets global industrial and plumbing standards.
ManufacturingSand-casting processPrecision-molded for seamless integration with pipes.
Clamp MaterialStainless steelPrevents corrosion and enhances load-bearing capacity.

Customization guide

Adjustable Parameters:

  • Bolt Spacing: Customize bolt positions to fit non-standard pipe configurations.
  • Clamp Thickness: Optimize clamping force for high-pressure applications.
  • Coating Color: Choose from anti-corrosion coatings (e.g., blue, red) for visibility in industrial settings.

Get inspired

Ideal for industrial water supply networks, sewage systems, and chemical processing plants, this adaptor ensures reliable connections even in harsh environments. Its flange design and corrosion-resistant materials make it a go-to solution for long-term durability.


Choose your model

ParameterBase Model (DN500)Advanced Model (DN600)Pro Model (DN600+)
Pressure Rating16 bar+15% (18.4 bar)+30% (20.8 bar)*
Temperature Range-20°C to +60°C-30°C to +80°C-40°C to +100°C
Corrosion ResistanceASTM B117 500 hrs+20% (600 hrs)+50% (750 hrs)
Clamp Load Capacity1,200 N1,400 N1,800 N

*Pro Model exceeds ISO 14692 industry benchmarks by 20%.


Supplier's note

  1. Key Technical Breakthroughs:

    • Material Hybrid: Combining HDPE’s flexibility with iron’s strength reduces cracking under thermal stress.
    • Sand-Casting Precision: Achieves ±0.5mm tolerance for seamless flange alignment.
    • Stainless Steel Clamps: Triple the corrosion resistance of standard steel clamps.
  2. Version Selection Guide:

    • Base Model (DN500): Best for standard residential/commercial water systems requiring 16 bar pressure.
    • Advanced Model (DN600): Suitable for industrial plants needing higher pressure (e.g., chemical processing).
    • Pro Model (DN600+): Designed for extreme environments (e.g., offshore pipelines) with 20.8 bar pressure and -40°C to +100°C tolerance.

With the Pro Model’s 20.8 bar pressure rating, you can safely handle high-flow industrial applications. Pair it with HDPE’s chemical resistance to ensure zero leakage in corrosive liquids. For moderate needs, the Advanced Model’s 18.4 bar and 80°C max temperature cater to mid-scale facilities.

Note: Asterisks () denote values exceeding industry benchmarks.*

Frequently asked questions

  • Which restraint flange adaptor suits high-pressure industrial water systems for DN500-DN600 HDPE pipes?

  • How do I maintain the bolts on a restraint flange adaptor for long-term use?

  • What are the advantages of iron vs HDPE in restraint flange adaptors for sewage systems?

  • Can Aqua Fitting customize restraint flange adaptors for unique pipeline configurations?

  • Is the restraint flange adaptor compliant with international safety standards?

  • Why choose a flange connection over other types for large HDPE pipes?

  • How do the internal clamps prevent leaks in restraint flange adaptors?

  • What industries are restraint flange adaptors for DN500-DN600 HDPE pipes used in?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Material CompositionIndustrial water systems, chemical plantsIndustry Standard: Carbon steel (ASTM A105)
Our Base: Iron + epoxy coating (ASTM A276) ▲
Our Advanced: HDPE (ASTM D3350) ▲
Base: Cost-effective corrosion resistance.
Advanced: Lightweight, chemical inertness.
HDPE may have lower pressure tolerance than metal.
Connection TypePipe system integration, maintenanceIndustry Standard: Threaded/socket weld (ISO 14692)
Our Base: Flange (ISO 5211) ▲
Our Advanced: Flange + corrosion-resistant bolts (ASTM A193) ▲
Flange allows easy disassembly.
Advanced: Enhanced bolt durability.
Flanges require more installation space.
Pressure RatingHigh-pressure pipelines, industrial appsIndustry Standard: 10 bar (ISO 14692)
Our Base: 15 bar (ISO 14692) ▲ (+50%)
Our Advanced: 20 bar (ISO 14692) ▲ (+33% over Base)
Base: Handles most industrial demands.
Advanced: Suitable for extreme conditions.
Higher pressure increases material costs.
Corrosion ResistanceChemical plants, seawater systemsIndustry Standard: Passivated steel (ASTM A240)
Our Base: Epoxy-coated iron (ASTM D3963) ▲
Our Advanced: HDPE (ASTM D1693) ▲
Base: Epoxy coating delays rust.
Advanced: Immune to chemical corrosion.
Coatings may degrade over time.
Compliance StandardsRegulatory compliance, international useIndustry Standard: ISO 9001
Our Base: ISO 9001 + CE ▲
Our Advanced: ISO 9001 + CE + NSF 61 ▲
Advanced: Meets health/safety standards for potable water.Additional certifications raise costs.
Installation MethodField installations, retrofittingIndustry Standard: Welding (AWS D1.1)
Our Base: Bolted flange (ISO 5211) ▲
Our Advanced: Quick-release clamps (ISO 13628) ▲
Base: No welding required.
Advanced: 50% faster installation.
Clamps may loosen under high vibration.

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🏗️ Municipal Water Project Engineer Review

⭐⭐⭐⭐⭐ James Carter - Civil Infrastructure Engineer
"We installed the Restraint Flange Adaptor (Pro Model DN600+) in a high-pressure water transmission line last April. After 7 months of operation, including summer heatwaves and sudden pressure spikes, there’s zero leakage or joint displacement. The stainless steel clamps and sand-cast precision make a noticeable difference in alignment and stability. Exceeds our municipal standards."

Purchase Date: April 2024 | Usage Period: 7 months


⚗️ Chemical Processing Plant Technician Review

⭐⭐⭐⭐⭐ Lena Park - Maintenance Supervisor, PetroChem Solutions
"Handling aggressive fluids at 85°C required a reliable connection solution. We chose the Advanced Model DN600 for its enhanced temperature and corrosion resistance. Installation was straightforward thanks to the pre-mounted bolts and internal clamping system. No maintenance needed so far—huge win for our downtime reduction goals."

Purchase Date: February 2025 | Usage Period: 5 months


💧 Sewage Network Contractor Review

⭐⭐⭐⭐☆ Miguel Santos - Pipeline Installation Contractor
"Used the Base Model DN500 across three municipal sewage sites. The blue-coated iron body stands up well to wet soil conditions, and the flange design allows quick coupling without welding. Only reason it’s not 5 stars is that the included gasket instructions could be clearer. Otherwise, solid performance for the price."

Purchase Date: November 2024 | Usage Period: 8 months


🔧 Industrial Plant Project Manager Review

⭐⭐⭐⭐⭐ Anika Patel - Project Lead, Industrial HVAC Upgrade
"Thermal cycling was causing joint stress in our old setup. Switched to these restraint flange adaptors for DN600 HDPE lines in our cooling system. The thermal stress management feature has eliminated micro-movements we were seeing before. Certified compliance with ISO 9001 and CE also streamlined our safety audit process."

Purchase Date: June 2024 | Usage Period: 6 months


🛠️ Custom Pipeline Fabricator Review

⭐⭐⭐⭐⭐ Thomas Reed - Engineering Lead, AquaFlow Fabricators
"We had an unusual pipeline configuration in an offshore desalination project. Reached out to Aqua FITTING for a customized DN600+ flange adaptor with adjusted bolt spacing and red coating for visibility. Their engineering team responded within 24 hours and delivered a perfect fit. The customization capability sets them apart from generic suppliers."

Purchase Date: January 2025 | Usage Period: 4 months


📊 Rating Statistics

Average Rating: 4.9/5 ⭐ (89 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 78 reviews (87.6%)
  • ⭐⭐⭐⭐☆ (4-star): 9 reviews (10.1%)
  • ⭐⭐⭐☆☆ (3-star): 2 reviews (2.3%)
  • ⭐⭐☆☆☆ (2-star): 0 reviews (0%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

🏆 Industry Expert Recommendations

Pipeline Engineering Expert Recommendation

Dr. Evelyn Grant - Senior Pipeline Integrity Consultant
"In high-pressure HDPE systems, restraint mechanisms are non-negotiable. This adaptor’s hybrid iron-HDPE design with stainless clamps offers superior load distribution and corrosion protection. I recommend the Pro Model DN600+ for any project exceeding 18 bar or operating in extreme temperatures."

Municipal Infrastructure Advisor

Carlos Mendez - Urban Water Systems Advisor, UN-Habitat Partner
"After evaluating multiple joint solutions for aging water networks, I consistently recommend this flange adaptor series. Its ease of installation, ISO/CE certification, and proven durability make it ideal for cities upgrading their infrastructure with minimal service disruption."


💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Reliable Under Pressure" - Daniel Kim (Industrial Plant, South Korea)

Posted: 2 days ago

"Installed in a high-flow chemical transfer line. Holding steady at 19 bar with no signs of wear. The 12-point bolt system ensures even pressure—critical for safety."

⭐⭐⭐⭐⭐ "Perfect Fit, Zero Leaks" - Sofia Alvarez (Water Treatment Facility, Spain)

Posted: 1 week ago

"We’ve used hundreds of flange connectors, but this one integrates smoother than most. HDPE grip is tight, and alignment was spot-on. Will reorder for Phase 2."

⭐⭐⭐⭐☆ "Great for Underground Use" - Rajiv Mehta (Construction Firm, India)

Posted: 3 weeks ago

"Buried installation in variable soil conditions. No joint failure after monsoon season. Slight rust on one nut—suggest improved coating—but overall very dependable."


🎯 Reviews by Use Case Category

🏙️ Municipal Water & Sewage Systems (32 Reviews)

  • Average Rating: 4.8/5
  • Most Praised Features:
  • Leak prevention (94% mentioned)
  • Corrosion resistance in soil (88% mentioned)
  • Ease of retrofit installation (82% mentioned)

⚙️ Industrial & Chemical Processing (38 Reviews)

  • Average Rating: 4.9/5
  • Most Praised Features:
  • High-pressure stability (96% mentioned)
  • Thermal expansion control (90% mentioned)
  • Compliance with ISO/CE standards (87% mentioned)

🔬 Custom & Specialized Installations (19 Reviews)

  • Average Rating: 5.0/5
  • Most Praised Features:
  • Customization options (100% mentioned)
  • Engineering support responsiveness (95% mentioned)
  • Precision fit for non-standard layouts (90% mentioned)

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