High-Quality HDPE Siphon Drainage Pipe Fittings for Industrial Applications

• 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

A PE siphonic drainage fitting supports vacuum-assisted roof and storm systems.

Designed for full-flow discharge, these fittings ensure reliable action, reducing pipe sizes and preventing blockages.

Common terms: PE siphonic drainage fittings, siphonic roof drain, PE roof drainage.

Optimized for easy installation and low maintenance, ideal for large commercial projects.

Application

Siphonic roof drainage for commercial buildings
Office towers, malls, and terminals with large roofs needing efficient drainage.

Industrial and warehouse facilities
Factories and centers benefit from fewer downpipes and simpler drainage.

Covered car parks and podium decks
Fast drainage and low visual impact for car parks and landscaped podiums.

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

Retrofitting and roof upgrades
Upgrades older systems to siphonic to boost capacity without major work.

Product Parameters

HDPE SIPHONE DRAINAGE FITTINGS	SIZE
	50-315MM

Detailed Photos

HIGH FLOW, SPACE-SAVING DESIGN

SMOOTH, CLOG-RESISTANT INTERIOR

Engineered for maximum capacity, requiring fewer downpipes and smaller diameters.

Polished paths minimize debris, reducing cleaning and maintenance costs.

DURABLE PE CONSTRUCTION

RELIABLE SIPHONIC PERFORMANCE

Made from polyethylene resisting chemicals and degradation, ensuring long life.

Hydraulic design promotes stable flow, preventing air ingress 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 strict in-house quality control.
Rapidly 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 pipes & fittings are used in construction, household, and agriculture due to their strength and versatility. Essential for drinking water projects, sewage systems, drainage, firewater pipelines, infrastructure, airports, ports, railways, sports venues, geothermal systems, solar and wind farms, water networks, irrigation, gas distribution, industrial systems, chemical plants, mining, and power plants.

3.What is the key Benefits of Electrofusion Fitting?
Zhejiang Fengfeng Pipe Industry's electrofusion fittings form a zero-leakage, permanent joint by creating a homogeneous bond between fitting and pipe, not just a mechanical seal.

Detailed breakdown of the process and principles for a leak-proof connection:

(1).Core Principle: Molecular Diffusion & Interfusion:
Thermal fusion is key. HDPE or PPR, heated to ~200-220°C, becomes molten, allowing polymer chains to entangle across the interface. Cooled, they recrystallize as one mass with no seam.

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

(3).The Role of 'Smart' Technology in Guaranteeing Integrity:
Modern electrofusion goes beyond heating. Fittings hold data read by welding units, ensuring leak-proof processes:
Barcode/Data Matrix: Contains welding parameters (voltage, time, cool time) for each fitting size and material batch.
Automatic Process Control: The welder reads codes and executes cycles automatically, removing human error.
Real-Time Monitoring & Rejection: Welder tracks resistance, temperature, energy. Deviations abort cycle, preventing defective joints.
Data Logging: Digital record (date, time, location, parameters) ensures traceability and leak-proof installation proof.

(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 an elastomeric seal (gasket/O-ring) against the pipe surface. Inherent Weakness: None, if procedure is followed correctly. Seal aging, hardening, and creep over time. Sensitivity to vibration and thermal cycling causing bolts to loosen. Long-Term Performance: Static or improves as crystallization completes. Lifetime equal to the pipe (50+ years). Degrades over time. Requires periodic re-torquing and eventual seal replacement.

Conclusion: The Guarantee of Zero Leakage
Zhejiang Fengfeng Pipe Industry's electrofusion joint prevents leaks by removing the interface where leakage occurs. It forms a seamless connection. Material science (molecular fusion), precision engineering (embedded coil & bead), and process intelligence (automated welding with data traceability) create a joint with intrinsic, permanent, and verifiable integrity. It's the preferred method 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 Pipe end is scraped to expose clean, virgin material, removing contamination that would hinder molecular diffusion and create weak bonds.

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

Step 3: Initiation & Heating:
Voltage is applied to the integrated resistance wire coil. The coil heats evenly, melting the fitting's inner surface and the pipe's outer surface, creating a precise melt zone. Controlled, even heating is crucial—cold spots would lead to incomplete fusion.

Step 4: Melting & Interfusion:
Molten material from both parts merges. Thermal expansion of the pipe and the fusion bead inside the fitting ensure contact and intermixing. The fusion bead melts to fill gaps, compensating for surface irregularities and preventing voids.

Step 5: Controlled Cooling:
Power is cut. The joint cools naturally under restraint, solidifying slowly to lock the polymer chains. Prevents stress cracks from rapid quenching, ensuring joint integrity under cyclic pressure and temperature changes.

5.What is HDPE?
High-Density Polyethylene (HDPE) is a thermoplastic polymer made from petroleum, renowned for its high strength-to-density ratio. Strong yet lightweight, HDPE is versatile and has been popular since the 1950s due to its durability, impact resistance, and ability to withstand various environmental conditions.
Using virgin HDPE from traceable sources is crucial for performance, safety, and value. Zhejiang Fengfeng Pipe Industry ensures quality by sourcing from top producers like SHANGHAI JINFEI PETROCHEMICAL and ZHEJIANG PETROLEUM & CHEMICAL, using grades like BH 1064, TR480AT 1768, 23050 HDPE 2125366, 07111, for measurable benefits.

(1). Guarantee of Core Performance & Long-Term Integrity
Role of Virgin Material Risk: Ensures fittings meet PE100/PE100RC classification, withstanding pressure (e.g., PN16, PN25) for 50+ years. Recycled material risks strength loss, test failures, and SCG, leading to sudden bursts.

(2). ESCR: Virgin polymer offers superior resistance to chemicals and stresses, extending lifespan in harsh conditions. Low ESCR in recycled material leads to cracks under stress, causing failure.

(3). Consistent Electrofusion Quality: Stable MFR ensures uniform heating and cooling for perfect molecular bonds. Variable composition causes uneven heating and leaks.

(4). Dimensional Stability & Low-Temperature Toughness: Predictable shrinkage ensures precise molding; excellent impact resistance prevents fractures at -20°C. Recycled material risks high warpage and brittleness, causing cracks.

2. Critical Value for Projects & Business:
(1). Risk Mitigation & Safety Assurance:
Role: In pipelines, a faulty fitting can cause failure. Virgin material is the primary barrier against systemic risks.
Value: Protects reputation and avoids costs from claims, failures, and damage.

(2). Passport to International Certification & Markets:
Role: High-end certifications require traceability and certified performance data, only possible with virgin resin.
Value: Essential for entering regulated markets like the EU, Middle East, and North America.

(3). Lowest Total Cost of Ownership:
Role: Higher initial cost ensures a maintenance-free, zero-replacement system for 50+ years.
Value: Reduces lifetime costs. Repair expenses outweigh minor price differences in fittings.

(4). Foundation for Credible Quality Commitment:
Role: Traceability to renowned producers guarantees quality.
Value: Technical proof builds trust and justifies a premium with engineers, contractors, and tender boards.

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