Versatile HDPE Siphon Drainage Pipe Fittings for Warehouse Facilities

• Customization: Available
• After-sales Service: Support
• Warranty: 50 Years
• Model NO.: PE Siphone Drainage Fitting
• Connection: Welding
• Flexible or Rigid: Flexible
• Material: PE
• Standard: Standard
• Product Name: PE Siphone Drainage Fitting
• Keywords: Electrofusion Fitting
• Usage: Industrial and Warehouse Facilities
• OEM: Available
• Color: Black
• Transport Package: Standard Packaging or Customized
• Specification: Standard Specifications or Customized
• Trademark: FENGFENG PIPE
• Origin: Zhejiang, China
• HS Code: 3917400000
• Production Capacity: 2000000 Pieces/Year
• Package Size: 49.00cm * 36.00cm * 37.00cm
• Package Gross Weight: 25.000kg

Product Description

Product Description

HDPE PE SIPHONE DRAINAGE FITTINGS

PE siphonic fittings are high-performance polyethylene solutions for vacuum-assisted roof and storm drainage.

Designed for full-flow discharge, these fittings use smooth profiles and precision hydraulics to enable siphonic action, reducing pipe sizes and outlets while preventing backflow and blockages.

Search terms: PE siphonic drainage fittings, siphonic roof drain, PE roof drainage, high-flow siphon fittings, stormwater siphonic system.

Optimized for easy installation, long life, and low maintenance, it's a cost-effective choice for commercial, industrial, and large-span roofing.

Application

Siphonic roof drainage for commercial buildings
Office towers, malls, and airports with large roofs require efficient stormwater removal.

Industrial and warehouse facilities
Factories and distribution centers with wide-span roofs benefit from fewer downpipes and simplified drainage.

Covered car parks and podium decks
Fast drainage and low visual impact suit multi-level car parks and landscaped podiums.

Public buildings and stadia
Sports venues, exhibition halls, and transit stations need reliable, high-capacity roof drainage during heavy rain.

Retrofitting and roof upgrades
Ideal for upgrading older gravity systems to siphonic systems, enhancing capacity without major structural work.

Product Parameters

HDPE SIPHONE DRAINAGE FITTINGS	SIZE
	50-315MM

Detailed Photos

HIGH FLOW, SPACE-SAVING DESIGN

SMOOTH, CLOG-RESISTANT INTERIOR

Engineered for max discharge, requiring fewer downpipes and smaller pipes than gravity drainage, saving materials and space.

Polished PE paths minimize deposition, allowing rapid rainwater and debris removal, reducing cleaning costs.

DURABLE PE CONSTRUCTION

RELIABLE SIPHONIC PERFORMANCE

Made from corrosion-resistant polyethylene that withstands chemical attack and environmental degradation, ensuring longevity.

Hydraulic design promotes stable vacuum-assisted flow, preventing air ingress and maintaining full flow during storms.

FAQ

1. Why choose us?
Factory Direct Pricing, Large Stock,Quality
(1).Manufacturer: Fittings from 20mm to 1400mm, rated for PN10 to PN25.
(2).Custom branding & products, supported by three plants.
(3).Large inventory
(4).Competitive pricing with in-house quality control.
(5).We quickly source and consolidate all related piping products.

2.What is common Uses of  HDPE/PE/PPR/PERT II pipe & fittings?
Zhejiang Fengfeng Pipe Industry's HDPE/PE/PPR/PERT II pipe & fittings are widely used in construction materials to household products and agricultural applications. Their strength, durability, and versatility make them invaluable across various industries. Especially in urban and rural drinking water projects,sewage and wastewater systems,domestic and industrial wastewater pipelines,drainage and storm-water management systems,underground firewater pipelines,infrastructure projects,airports, ports, railways, and highway drainage projects,sports venues and landscape irrigation systems,geothermal heating and cooling systems,water piping for solar farms and wind farms,residential, commercial, and municipal water distribution networks,agricultural irrigation and greenhouse watering systems,gas distribution networks,low-pressure and medium-pressure natural gas pipelines,industrial piping systems,chemical processing plants requiring corrosion-resistant piping,mining operations for slurry and water transport,power plants and cooling systems.

3.What is the key Benefits of Electrofusion Fitting?
Zhejiang Fengfeng Pipe Industry's electrofusion fittings create a zero-leakage, permanent joint through a controlled scientific process that forms a homogeneous, monolithic molecular bond between the fitting and pipe.

Here is a detailed, step-by-step breakdown of the process and principles ensuring a leak-proof connection:

(1).Core Principle: Molecular Diffusion & Interfusion:
Thermal fusion is the foundation. When HDPE or PPR material is heated to a specific melt temperature (~200-220°C), it transitions from solid to viscous, allowing polymer chains from the fitting and pipe to interdiffuse and entangle. On cooling, they recrystallize, forming a single, continuous material mass without a distinct seam.

(2).Step-by-Step Process to Ensure Zero Leakage

(3).The Role of "Smart" Technology in Guaranteeing Integrity:
Modern electrofusion transcends simple heating. The fitting contains critical data that, when read by a welding unit, ensures the process is leak-proof:
Barcode/Data Matrix: Stores welding parameters (voltage, time, cool time) for the fitting size and material batch.
Automatic Process Control: The welder reads the code, executes the cycle automatically, eliminating human error.
Real-Time Monitoring & Rejection: The welder monitors parameters. If any deviate, it aborts the cycle, preventing a defective joint.
Data Logging: A digital record (date, time, location, parameters) is created for each joint, ensuring traceability and proof of installation.

(4).Comparison: Why Mechanical Fittings Can Leak:Electrofusion offers superior, leak-free performance:Feature Electrofusion Joint.Mechanical/Gasketed Joint.Sealing Mechanism Homogeneous molecular bond (pipe and fitting become one). Compression of elastomeric seal (gasket/O-ring) against pipe surface.Inherent Weakness None, if procedure followed. Seal aging, hardening, creep over time. Sensitive to vibration, thermal cycling causing bolts to loosen.Long-Term Performance Static or improves as crystallization completes. Lifetime equal to pipe (50+ years). Degrades over time. Needs retorquing, seal replacement.

Conclusion: The Assurance of Zero Leakage
Zhejiang Fengfeng Pipe Industry's electrofusion joint is leak-proof, eliminating potential leakage interfaces. It's not a "seal" but a seamless fusion. Material science (molecular fusion), precision engineering (embedded coil & bead), and process intelligence (automated welding with data traceability) create an intrinsically permanent, verifiable joint. This is why it's mandated for leak-sensitive applications like gas distribution, potable water mains, and chemical pipelines.

4.What is the Step of Process Purpose & Anti-Leak Mechanism?
Step 1: Surface Preparation Scrape pipe end to expose clean, virgin material, removing contaminants that impede molecular diffusion and cause weak bonds.

Step 2: Clamping & Alignment:
Pipe and fitting clamped in straight, aligned position with precise gap.Eliminates stress and misalignment that could cause voids or thin spots in fused joint.

Step 3: Initiation & Heating:
Apply voltage to resistance wire coil in fitting. Coil heats uniformly, melting fitting's inner and pipe's outer surfaces. Creates precise, uniform melt zone. Controlled, even heating is critical—cold spots lead to incomplete fusion, potential leaks.

Step 4: Melting & Interfusion:
Molten materials merge. Internal pressure from pipe's thermal expansion and fusion bead ensures intimate contact, forcing materials to intermix. Fusion bead melts to fill gap, compensating surface irregularities, ensuring no voids.

Step 5: Controlled Cooling:
Power cut. Joint cools naturally, uniformly maintained under restraint. Polymer chains solidify slowly, locking structure. Prevents stress cracks (from rapid quenching). Stress-free joint maintains integrity under cyclic pressure, temperature changes.

5.What is HDPE?
High-Density Polyethylene (HDPE) is a petroleum-based thermoplastic polymer. Known for its high strength-to-density ratio, it is strong yet lightweight. HDPE, popular since the 1950s, is durable, impact-resistant, and withstands various environmental conditions.
Using brand-new, virgin HDPE from traceable sources is a crucial engineering choice impacting performance, safety, and value. For Zhejiang Fengfeng Pipe Industry, specifying prime resins from top producers like SHANGHAI JINFEI PETROCHEMICAL and ZHEJIANG PETROLEUM & CHEMICAL (grades: BH 1064, TR480AT 1768, 23050 HDPE 2125366, 07111) offers critical benefits.

(1).Guarantee of Core Performance & Long-Term Integrity
Role of Virgin Material Risk of Using Recycled/Off-Spec Material.Long-Term Hydrostatic Strength (LTHS).Ensures fittings meet PE100/PE100RC classification, withstanding rated pressure (e.g., PN16, PN25) for 50+ years. Recycled material risks strength loss, failed tests, and Slow Crack Growth (SCG), leading to bursts.

(2).Environmental Stress Crack Resistance (ESCR).An intact polymer structure resists chemicals and stresses, extending lifespan in harsh environments. Low ESCR makes fittings crack-prone under stress, causing failure.

(3).Consistent Electrofusion Quality Stable Melt Flow Rate (MFR) ensures uniform heating and bonding during electrofusion. Contaminants cause uneven heating and cold joints, leading to leaks.

(4).Dimensional Stability & Low-Temperature Toughness Predictable shrinkage ensures precise molding; maintains impact resistance even at -20°C, preventing fractures. High warpage and brittleness lead to cracks in handling or freeze-thaw cycles.

2. Critical Value for Projects & Business:
(1).Risk Mitigation & Safety Assurance:
In gas, water, or chemical pipelines, one faulty fitting can cause failure. Virgin material is the primary barrier against systemic risks.
Protects brand reputation and avoids costs from liability claims, project failures, and environmental damage.

(2).Passport to International Certification & Markets:
High-end certifications (CE, ISO, WRAS) demand traceability and certified performance data. Only virgin resin offers this.
Essential for entering regulated markets like the EU, Middle East, and North America.

(3)..Lowest Total Cost of Ownership:
Initial cost is higher, but it ensures a maintenance-free system for 50+ years.
For owners and operators, this reduces lifetime costs. Repair expenses far outweigh the minor price difference in fittings.

(4).Foundation for Credible Quality Commitment:
Traceability to renowned petrochemical producers guarantees quality.
In communications with engineers, contractors, and tender boards, this builds trust and justifies a premium.

Conclusion: The Strategic Message
Using traceable, virgin raw materials sends a powerful strategic message to clients, especially international buyers:
Zhejiang Fengfeng Pipe Industry ensures reliability at the molecular level. We invest in higher material costs to shield your projects from decades of risk and potential catastrophic expense. This is not just a fitting—it's a 50-year performance warranty.
This shifts the narrative from price to value, responsibility, and risk management, positioning Zhejiang Fengfeng Pipe Industry as a critical infrastructure solutions provider, not just a commodity supplier.