Perfect Fit Around Every Corner – Mo Ding 90° PVC Corner Fittings for Leak-Free Gutter Transitions!

• Customization: Available
• After-sales Service: on Line Technology Support
• Warranty: Life Time
• Model NO.: gutter
• Material: PVC
• Kind: Drainage System
• Water Absorption: 0.12%~0.25%
• Contraction Percentage: 1.0%~2.5%
• Tensile Strength: 51~80MPa
• OEM ODM: Workable
• Certification: Follow The Buyer′s Standard
• Special Surface Treatment: Color Can Be Customized
• Transport Package: Carton+ Pallet
• Specification: 120x100x120
• Trademark: Wandy
• Origin: China
• HS Code: 391723
• Production Capacity: 100000 PCS /Week

Product Description

Product Description

 

 

• PVC gutter corner fittings serve as specialized components to connect two gutter sections at angles, typically 90° or 135°, enabling smooth rainwater flow around building corners.
• These fittings, made from high-quality polyvinyl chloride (PVC), are engineered for durability with high resistance to weathering, corrosion, and rust.
• Designed for compatibility with PVC or vinyl gutter systems, PVC corner fittings provide a lightweight yet robust connection at directional transitions.
• Available in male and female configurations, these fittings ensure a secure, leak-resistant fit that maintains the continuity and integrity of the drainage system.
• PVC corner fittings come in various shapes and angles to accommodate diverse architectural requirements and roofline designs.
• Installation of these fittings is straightforward, using snap-fit or solvent welding methods, requiring minimal tools and offering ease for both professionals and DIY users.
• Known for their long-lasting performance, PVC corner fittings resist cracking, warping, or degrading, unlike metal alternatives.
• The rigid structure and UV-resistant composition of these fittings make them ideal for sustaining the functionality and appearance of gutter systems over time.
• PVC gutter corner fittings ensure smooth transitions, efficient water management, and reliable performance in all weather conditions, whether for new installations or repairs of existing systems.

 

 

 

 

 

 

 

 

Key Features of Mo Ding PVC Gutter Corner Fittings

1. Durability and Weather Resistance

   • UV Resistance: Mo Ding PVC gutter corner fittings are designed to withstand prolonged exposure to sunlight without becoming brittle, discolored, or degraded. UV-resistant additives ensure long-lasting performance even under harsh sun conditions.

   • Impact Resistance: These corner fittings are engineered to resist cracks or breaks under stress, such as during storms or when subjected to the weight of debris or snow.

2. Strength and Load Capacity

   • Mo Ding PVC gutter corner fittings are built to withstand the weight of gutters, rainwater, and debris without sagging or warping. They provide strong, reliable support, ensuring the system remains intact and effective over time.

3. Corrosion and Rust Resistance

   • PVC naturally resists corrosion, making Mo Ding corner fittings an excellent alternative to metal corners, which can rust over time. These fittings won't degrade, preserving the gutter system's function and appearance for years.

4. Ease of Installation

   • Simple Fitting Mechanism: These corner fittings are easy to install, requiring minimal tools. Whether using snap-fit or solvent welding methods, the installation process is straightforward and fast.

   • Adjustability: Some models of Mo Ding PVC gutter corners offer adjustable features to accommodate different gutter sizes and roof pitches, ensuring a perfect, secure fit for every installation.

5. Compatibility with Different Gutter Systems

   • Mo Ding PVC gutter corner fittings are designed to be compatible with a wide variety of gutter types, including K-style, half-round, and box gutters. Their precise molding ensures a snug and secure fit for most systems.

6. Reinforced Design

   • These corner fittings feature reinforced ribs or thicker material around stress points, ensuring they maintain their shape and functionality under heavy load, extreme weather conditions, and over extended use.

7. Aesthetic and Color Options

   • Available in a variety of colors, Mo Ding PVC gutter corner fittings blend seamlessly with most home exteriors. Neutral colors like white are popular, though custom color options can be offered to match specific gutter systems or architectural preferences.

8. Non-Toxic and Environmentally Friendly Materials

   • Mo Ding PVC gutter corner fittings are made from non-toxic, eco-friendly materials, ensuring that they are safe for the environment. They are free from harmful chemicals like lead and phthalates, making them a sustainable choice for your gutter system.

9. Resistance to Mold and Mildew

   • Given the moisture often present in gutters, Mo Ding PVC corner fittings are resistant to mold and mildew buildup. This helps keep the entire gutter system cleaner for longer, reducing maintenance needs and improving performance.

10. Long-Lasting Warranty

• Mo Ding offers a comprehensive warranty on their PVC gutter corner fittings, guaranteeing that they will maintain their performance and durability for many years. This provides peace of mind and assures customers that they're investing in a long-lasting solution.

 

1. Chemical Properties

Parameter	Specification
Base Material	Unplasticized Polyvinyl Chloride (uPVC)
UV Resistance	UV-stabilized with additives (TiO or proprietary agents)
Chemical Resistance	Resistant to acids, alkalis, salts, and atmospheric agents
Toxicity	Lead-free, cadmium-free, RoHS compliant
Flame Retardancy	Self-extinguishing (UL 94 V-0 to V-2 rated)
Weathering Resistance	Excellent - resistant to discoloration and degradation

 

2. Physical Properties

Parameter	Specification
Color	Standard: White, Brown, Grey; custom colors available
Surface Finish	Smooth or slightly textured matte finish
Density	1.35 - 1.45 g/cm³
Water Absorption	< 0.1% (per ASTM D570)
Thermal Expansion	50 - 80 × 10 /°C (linear)
Working Temperature	-10°C to 60°C (short-term: up to 70°C)

 

3. Mechanical Properties

Parameter	Specification
Tensile Strength	≥ 45 MPa (per ASTM D638)
Impact Resistance	High - Notched Izod Impact ≥ 2.0 kJ/m² (ASTM D256)
Flexural Strength	≥ 80 MPa (per ASTM D790)
Load Capacity	Designed to hold up to 15-25 kg per hanger (varies by design)
Elastic Modulus	2.5-3.0 GPa
Creep Resistance	Good under prolonged loading

 

4. Workcraft / Installation Attributes

Feature	Details
Mounting Type	Fascia-mounted or rafter-mounted, snap-in or screw-in style
Installation	Tool-free or requires basic tools (screwdriver/drill)
Gutter Compatibility	K-style, half-round, box gutters
Adjustment Features	Some models include pitch adjustment mechanisms
Corrosion Resistance	No rusting - ideal for coastal or humid areas
Maintenance	Low - periodic visual checks and basic cleaning
Lifespan	20+ years under normal conditions

 

 

 
 

Products Advantages in Construction

• Lightweight & Easy to Install

• Corrosion and Weather Resistant

• Low Maintenance

• Cost-effective

• Non-conductive (safe around electrical installations)

 

Production show

Here's a breakdown of how we  manage our PVC gutter ( accessories) production effectively:

1. Material Sourcing

• PVC Resin: Ensure you are sourcing high-quality PVC resin that meets industry standards. The resin should be durable, resistant to weather conditions, and UV-stable.

• Additives: PVC gutters often contain additives like stabilizers (to resist UV rays), plasticizers (for flexibility), and impact modifiers. Ensure these are selected properly to optimize the performance of your product.

2. Design and Prototyping

• Customization: Depending on customer requirements, you might need to create different designs and sizes (e.g., standard gutters, fascia brackets, elbows). Design your gutter profiles and accessories accordingly.

• Prototyping: Before mass production, create prototypes and test them for functionality, durability, and ease of installation. Prototypes allow you to identify potential issues in design.

3. Manufacturing Process

• Extrusion: Most PVC gutters are made via the extrusion process, where heated PVC material is forced through a mold to form long, continuous sections of gutters.

  • Tooling: Ensure your extruder machine is calibrated and your molds are in good condition to prevent defects.

  • Temperature Control: Maintaining proper temperature settings is key for consistent thickness and quality.

• Injection Molding: For accessories like gutter hangers, elbows, or end caps, injection molding may be used. Ensure precise molding equipment for these parts.

4. Quality Control

• Dimensional Inspection: Regularly check the dimensions of the gutters to ensure they meet the required specifications.

• Strength Tests: Test the durability of the material, including bending and impact tests, to ensure the PVC gutter hangers and other components can withstand typical weather conditions.

• UV Testing: To verify UV resistance, subject products to accelerated aging tests. This will ensure the gutters won't degrade or discolor after prolonged exposure to sunlight.

• Leak Test: Test gutter joints to make sure they're properly sealed and don't leak when water is running through them.

5. Logistics and Distribution

• Inventory Management: Use efficient inventory management to track raw materials, production schedules, and finished products. You want to make sure you have enough raw materials to meet demand without overstocking.

• Packaging: Packaging should protect the gutters during transportation. It should also be easy for the end customer to open and install the product.

• Shipping: Optimize shipping logistics to minimize costs and improve delivery times. Ensure gutters are stored in a way that prevents warping or damage.

6. Customer Feedback and Improvement

• Monitoring Performance: After installation, monitor how well the product performs. Are customers experiencing issues like sagging, leaks, or discoloration? Customer feedback is crucial to making adjustments and improving the product.

• Continuous Improvement: Regularly assess production efficiency, quality control measures, and customer feedback to implement improvements. Automation in the production process, if feasible, can also help improve consistency and reduce costs.

7. Compliance and Certifications

• Ensure your PVC gutter products meet local building code requirements and environmental standards.

• If necessary, get your product certified for specific standards like ASTM, ISO, or other regional certifications for quality and safety.

 

Key Factors to Keep in Mind:

• Efficiency: Streamline production processes to keep costs down while maintaining quality. Invest in technology and training for workers.

• Environmental Impact: As sustainability becomes a bigger issue, consider adopting eco-friendly practices like recycling scrap PVC or using recyclable packaging materials.

• Customer Service: Offer support for installation or repairs and keep a line open for customer feedback.

 

 

Quality control

Quality Control for PVC Gutter Corner Fittings: Precision Engineering at Every Stage

At Hangzhou Lin'an Mo Ding Building Materials Co., Ltd., our commitment to excellence is embedded in a ISO 9001-certified quality management system, ensuring that each PVC gutter corner fitting adheres to rigorous technical and aesthetic benchmarks. Below is an in-depth overview of our quality control protocols, with specific focus on UV stabilizer integration and PVC material performance:

1. Raw Material Quality Assurance

PVC Resin & Additive Specification:

 

• Source premium-grade virgin PVC resin (complying with ASTM D1784 standards) with controlled molecular weight distribution for optimal mechanical properties.
• Formulate additives using a proprietary blend of:
  • UV stabilizers: High-efficiency HALS (Hindered Amine Light Stabilizers) and benzotriazole derivatives, providing ≥95% UV radiation absorption in the 290-400 nm spectrum.
  • Impact modifiers: Acrylic or CPE (Chlorinated Polyethylene) polymers to enhance ductility (targeted Izod impact strength: ≥1.8 ft·lbf/in).
  • Heat stabilizers: Calcium-zinc composite systems for thermal stability during extrusion (processing temperature: 180-210°C).
  • Pigments: Organic/inorganic colorants with ΔE ≤1.5 color fastness (per ASTM D2244) to ensure long-term hue consistency.

 

Testing Regimen:

 

• Melt Flow Index (MFI): Test against ASTM D1238 to validate melt viscosity (target MFI: 1.2-1.5 g/10 min at 190°C/2.16 kg).
• Moisture & Contaminant Analysis: Use Karl Fischer titration to ensure <0.1% moisture content; employ FTIR spectroscopy for impurity detection.
• Pilot Batch Validation: Conduct QUV accelerated weathering tests (ASTM G154) for 1,500 hours, targeting ≤5% color shift and ≥90% retention of tensile strength.

2. Extrusion Process Control

Critical Parameters:

 

• Temperature Profiling: Maintain zone-specific barrel temperatures (feed zone: 160-170°C; compression zone: 180-195°C; die zone: 190-205°C) to ensure homogeneous melt blending.
• Screw Speed & Pressure: Operate at 15-25 RPM with backpressure of 80-120 bar to achieve consistent shear mixing and prevent thermal degradation.
• Die Alignment: Use laser alignment tools to ensure ±0.05 mm precision in profile geometry.

 

In-Process Quality Checks:

 

• Online Surface Inspection: Deploy high-resolution cameras to detect micro-flaws (e.g., 0.1 mm+ bubbles, surface roughness >1.6 μm Ra).
• Profile Thickness Monitoring: Use ultrasonic gauging to verify wall thickness within ±0.3 mm tolerance (ASTM D2139).

3. Dimensional & Structural Integrity Testing

Geometric Precision:

 

• Angular Tolerance: Maintain miter angles at 45° ±0.5° (for corner fittings) using digital protractors.
• Linear Dimensions: Control width/height within ±0.3 mm via coordinate measuring machines (CMM), with critical features (e.g., snap-fit tabs) held to ±0.1 mm.

 

Mechanical Performance Testing:

 

• Static Load Test: Apply 50 kg/m² load for 24 hours, allowing ≤2 mm deflection (ASTM D7234).
• Impact Resistance: Conduct -20°C drop tests with 5 kg steel ball from 2 m height; no visible cracks or functional impairment.
• Weld Strength (Solvent-Weld Models): Perform tensile shear tests with minimum failure load of 800 N (ASTM D3163).

4. UV & Weathering Compliance

UV Stabilizer Efficacy:

 

• HALS Loading: Maintain 0.8-1.2% by weight in formulation, validated via thermogravimetric analysis (TGA) for long-term volatilization resistance.
• Weathering Simulation:
  • QUV/Seal Test: 5,000 hours of UVB-313 exposure (340 nm, 60°C) with alternating humidity cycles; allow ≤10% elongation at break degradation.
  • Xenon Arc Test (ASTM G155): 3,000 kJ/m² exposure, targeting ΔE ≤3.0 and gloss retention ≥85%.

 

Color Consistency:

 

• Use spectrophotometers to match Pantone® or RAL codes within ΔE*ab ≤1.0 (CIELAB color space).

5. Final QC & Traceability

End-of-Line Inspection:

 

• 100% visual audit for surface defects (e.g., sink marks, flow lines) and dimensional compliance.
• Functional Mock-Up: Assemble fittings with representative gutters to verify snap-fit engagement force (target: 8-12 N) and leak tightness via 24-hour water retention test.

 

Traceability System:

 

• Assign unique lot codes to track raw materials (resin batch, additive suppliers), processing parameters, and QC results via digital manufacturing execution system (MES).
• Retain test records for 7 years in compliance with ISO 17025 standards.

PVC Pipe Quality Synergy

Our corner fittings are engineered to integrate seamlessly with Mo Ding's PVC gutter pipes, which undergo parallel QC protocols:

 

• Pipe Wall Uniformity: ±5% thickness variation (ASTM D2104).
• Hydrostatic Pressure Testing: Withstand 0.3 MPa for 1 hour without failure (ASTM D1598).
• Rigidity Index: ASTM D2412 ring stiffness ≥4,000 Pa for structural compatibility.

 

By aligning with ASTM, ISO, and regional building codes (e.g., UPC, IPC), our quality control framework ensures that every PVC gutter corner fitting delivers 25+ years of service life under extreme climatic conditions. Contact us for technical datasheets or third-party test reports.

 

 

Optional Testing Standards for Quality Assurance

Test	Standard
Weathering Test	ASTM D2565 (UV exposure)
Tensile and Flexural Strength	ASTM D638, ASTM D790
Impact Resistance	ASTM D256
Colorfastness / Fade Resistance	ISO 105-B02
Dimensional Stability

 

Packaging & Shipping

 

1. Preparation and Materials Needed

• PVC gutters (clean and dry)

• Bubble wrap or foam padding

• Stretch film or shrink wrap

• Corrugated cardboard or protective corner guards

• Zip ties or packing tape

• Strong strapping (if bundling)

• Wooden crate or heavy-duty cardboard box (for long-distance or bulk shipping)

• Pallet (optional for large orders)

 

2. Packing Process

a. Clean and Inspect

• Ensure all gutters are clean, dry, and free of defects before packing.

b. Bundle Gutters

• Group gutters of the same length together.

• Nest them (if design allows) to save space and reduce movement during transit.

• Use zip ties or strapping to bundle them securely-don't overtighten, to avoid bending or warping.

c. Protect Edges and Surfaces

• Wrap each bundle with bubble wrap or foam padding.

• Use protective cardboard or corner guards on ends and sides to prevent crushing.

d. Wrap Entire Bundle

• Wrap the entire bundle tightly with stretch film or shrink wrap to keep everything in place.

 

3. Delivery Guidelines

a. Label Clearly

• Use clear, water-resistant labels.

• Include handling instructions like "Fragile", "Do Not Stack", or "This Side Up" if necessary.

b. Load Strategically

• Place bundles flat and supported.

• Avoid placing anything heavy on top.

• For longer gutters (typically 10ft+), ensure the vehicle supports the length and has adequate tie-down points.

c. Use Pallets (For Bulk Orders)

• Stack bundles evenly on a pallet.

• Strap them securely to avoid shifting.

• Shrink wrap the entire pallet if shipping with a freight carrier.

Products applications

Applications of PVC Gutters in Building Construction

1. Rainwater Management

• Primary Function: PVC gutters collect and direct rainwater from the roof to downpipes, protecting the building's walls, foundation, and landscape.

• Prevents: Water pooling, soil erosion, foundation damage, mold growth, and exterior wall stains.

2. Roof Drainage Systems

• Installed along roof edges to capture runoff.

• Can be used on residential, commercial, and industrial buildings.

• Compatible with various roof types: sloped, flat, tiled, or metal.

3. Rainwater Harvesting Systems

• Gutters funnel water into storage tanks for reuse in irrigation, flushing, or even filtration for household use.

• Accessories like leaf guards and first flush diverters are commonly used to improve water quality.

4. Fascia Protection

• Gutter systems often include fascia brackets or boards to cover and protect the fascia board from weathering and water damage.

5. Architectural Aesthetics

• Available in various colors and profiles to match building design.

• Enhances roof edge detailing for a clean, modern finish.

6. Ventilation Drainage

• In industrial buildings or large halls, PVC downpipes may be used in HVAC systems to drain condensate.

 

Accessories and Their Applications

Accessory	Function / Application
Downspouts	Direct water from gutters to ground level drainage or collection system.
Elbows	Change the direction of downpipes (e.g., from vertical to horizontal).
End Caps	Seal the ends of the gutter to prevent water leakage.
Gutter Joiners	Connect two lengths of gutter securely.
Brackets/Clips	Secure gutters to the fascia board or building structure.
Leaf Guards	Prevent leaves and debris from clogging the gutter system.
Drop Outlets	Connect gutter to downspout, creating a smooth water path.
Expansion Joints	Allow movement due to temperature changes, preventing cracking or distortion.

Company Profile

Introduction to Services Offered by Hangzhou Lin'an Mo Ding Building Materials Co., Ltd.

Founded in 2011 and based in Gaohong Industrial Park, Hangzhou Lin'an Mo Ding Building Materials Co., Ltd. is a high-tech enterprise specializing in the research, development, production, sales, and technical support of advanced building materials. The company is a recognized leader in high-performance drainage systems and eco-friendly construction solutions.

Mo Ding offers a comprehensive range of products and services, including PVC and aluminum alloy drainage systems, wall and ceiling panels, and a full suite of components designed for durability and environmental sustainability. Its flagship product-the Ward high-performance rainwater system-features innovative design and materials that deliver twice the drainage efficiency and exceptional resistance to harsh weather conditions.

The company provides end-to-end solutions, from design consultation and technical guidance to installation and after-sales service. With a strong commitment to quality, Mo Ding adheres to ISO 9001 standards and offers certified, lead-free products that support green building initiatives. Serving both domestic and international markets, Mo Ding partners with architects and developers to deliver stylish, long-lasting, and leak-free drainage solutions for residential, commercial, and landmark projects.

Driven by innovation and sustainable development, Mo Ding continues to expand its global presence and strives to be a leading brand in green building materials.

 

FAQ

 

Frequently Asked Questions (FAQs) - Mo Ding PVC Gutter Corner Fittings

1. Are Mo Ding PVC gutter corner fittings easy to install?

Yes, they are designed for quick and hassle-free installation. Mo Ding corner fittings feature a user-friendly snap-fit design or solvent-weld compatibility, requiring only basic tools such as a hacksaw and measuring tape. The fittings align seamlessly with gutter sections, making them ideal for both professionals and DIY users. Detailed instructions and video tutorials are available for added convenience.

 

2. What is the expected lifespan of the fittings?

Mo Ding corner fittings are crafted from UV-stabilized and impact-resistant PVC, engineered for durability in all climates. Lab-tested to withstand over 5,000 hours of QUV exposure, these fittings offer a service life of 25+ years under normal environmental conditions.

 

3. Can they support heavy gutter systems?

Absolutely. Designed with reinforced ribbed sections at stress points, Mo Ding corner fittings can handle up to 50 kg/m² of static load. They are fully compatible with both residential and commercial systems, including large-capacity K-style and box gutters.

 

4. Are different sizes or adjustable options available?

Yes. Mo Ding offers a comprehensive range of options:

• Fixed-angle fittings: 90°, 135°, and 45° variants.

• Adjustable models: Allow ±15° flexibility to adapt to non-standard angles and unique roof layouts.

• Custom profiles: Available upon request for tailored projects.

 

5. How do the fittings perform in extreme weather?

Designed to meet rigorous standards (e.g., ASTM D2665), our fittings are:

• UV-resistant: Formulated with HALS additives to block over 95% of UV rays.

• Impact-resistant: Can withstand impacts from a 5 kg steel ball dropped from 2 meters at -20°C.

• Temperature-tolerant: Operational in climates ranging from -20°C to 60°C (-4°F to 140°F) without cracking or warping.

 

6. Are the products environmentally friendly?

Yes. Mo Ding uses phthalate-free, lead-safe PVC that complies with ASTM D3439 and LEED building standards. All materials are 100% recyclable, and our manufacturing process incorporates closed-loop systems to minimize waste.

 

7. What maintenance is required?

Maintenance is minimal:

• Inspect periodically for debris accumulation.

• Check alignment after major weather events.

• No painting, rustproofing, or chemical treatment needed-PVC is naturally corrosion-resistant.

 

8. Are the fittings compatible with all gutter systems?

Mo Ding corner fittings are universally compatible with:

• PVC gutters (standard and heavy-duty)

• Aluminum systems (K-style and half-round)

• Steel gutters, with the use of PVC-to-metal adapters

For special configurations, our technical team offers compatibility assessments.

 

9. What type of warranty is offered?

We provide a limited lifetime warranty covering defects in materials, UV degradation, and structural failure under normal use. The warranty excludes improper installation and physical abuse. Full terms are included with product documentation or available through customer service.

 

10. How can I place an order or get a quote?

• Online: Visit our website to view products and purchase directly.

• Bulk/Custom Orders: Contact our sales team at sales@ for tailored quotes.

• Distributors: Locate authorized dealers through our regional directory.

 

11. Is installation support available?

Yes. We provide full support, including:

• PDF and video installation guides

• Technical consultations for complex installations

• Optional on-site training for contractors

Contact our support team at support@ or call during business hours.

Note: For optimal results, use Mo Ding corner fittings with compatible gutter hangers and follow local codes regarding slope (typically 1/16" per foot) and drainage performance.