125mm Heavy-Duty Stub End with Iron Flange for Infrastruction Pipeline Applications

Product Description

Product Description

HDPE/PE Stub End Flange

The HDPE/PE Stub End Flange, a transition fitting, connects HDPE pipes to flanged systems like valves and pumps. It includes a HDPE stub end and a loose steel backing flange for easy alignment during installation.

HDPE butt fusion flange adapters offer a reliable, corrosion-resistant, leak-proof solution for connecting HDPE pipelines to flanged metal equipment. Their versatility and ease of installation make them a top choice globally.

Application

HDPE ensures corrosion resistance and longevity, while the flange adapter enables easy connection to metal equipment.

The fusion joint provides a permanent, leak-free connection vital for gas safety; the flange adapter integrates with steel components.

HDPE withstands corrosion and chemicals, and the flange adapter offers a standard interface with industrial equipment.

HDPE ensures durability for buried fire mains, while the flange adapter integrates with standard fire protection equipment.

HDPE is perfect for seawater use due to corrosion resistance, and the flange adapter connects easily to metal components.

HDPE resists sewage gases and chemicals, and the flange adapter ensures compatibility with treatment plant infrastructure.

HDPE provides flexibility for buried agricultural pipelines, with flange adapters simplifying connections to pumps and valves.

The flange adapter enables seamless integration of new HDPE sections with existing flanged infrastructure.

Product Parameters

TECHNICAL PARAMETERS
Product Name	HDPE/PE Stub End Flange
Function	Pipe-to-Flange Transition
Main Materials	Body:HDPE
Operating Temperature	Suitable For Cold And Hot Water Systems
Handling	Easy installation
Typical Weight	Very Lightweight Overall
Durability & Maintenance	Corrosion-Free And Low Maintenance

Detailed Photos

PERMANENT, LEAK-PROOF JOINTS

EASY FIELD INSTALLATION

The HDPE stub end fuses directly to the pipe, forming a homogeneous, corrosion-resistant joint without gaskets.

The HDPE body resists rust, chemicals, and electrolysis, ideal for aggressive environments.

CORROSION AND SCALE RESISTANT

COMPACT & LIGHTWEIGHT

Made from PP-R plastic, surfaces do not corrode or scale, enhancing longevity in water and chemical applications.

Lighter than metal, enabling faster, safer handling and installation, especially in confined or elevated areas.

FAQ

1. Why choose us?
Factory Direct Pricing, Large Stock,Quality
(1).Manufactuer: Fittings from 20mm to 1400mm, rated for PN10 to PN25.
(2).custom branding & products, backed by three plants and .
(3).large inventory
(4).Competitive pricing with strict, in-house quality control.
(5).We 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 pipe & fittings excel in construction, household, and agricultural applications. Their strength and versatility make them essential in urban/rural water projects, sewage and wastewater systems, drainage, storm-water management, underground firewater pipelines, infrastructure, airports, ports, railways, highways, sports venues, landscape irrigation, geothermal, solar/wind farms, residential, commercial, municipal water networks, agricultural irrigation, gas distribution, low/medium-pressure gas pipelines, industrial piping, chemical plants, mining, 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 joint through a controlled process forming a homogeneous molecular bond, merging fitting and pipe into a single entity.

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

(1).Core Principle: Molecular Diffusion & Interfusion:
Thermal fusion underpins this process. HDPE or PPR heats to ~200-220°C, turning molten and allowing polymer chains to interdiffuse under pressure. Cooling crystallizes them into a seamless mass.

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

(3).The Role of "Smart" Technology in Guaranteeing Integrity:
Modern electrofusion uses fittings with data read by a welding unit to ensure a leak-proof process:
Barcode/Data Matrix: Contains welding parameters (voltage, time, cool time) for specific fitting and material batch.
Automatic Process Control: Welder reads code, executes cycle automatically, eliminating human error.
Real-Time Monitoring: Welder checks resistance, temperature, energy input, aborting if deviations occur to prevent defects.
Data Logging: Creates a digital record for each joint, ensuring traceability and proof of correct installation.

(4).Comparison: Why Mechanical Fittings Can Leak: Electrofusion's molecular bond offers superior permanence over mechanical seals, which can degrade, harden, and require maintenance.

Conclusion: Zero Leakage Guarantee
Zhejiang Fengfeng Pipe Industry's electrofusion joint is leak-proof by eliminating the interface where leakage could occur. It is not a "seal" but removes the seam. The blend of material science (molecular fusion), precision engineering (embedded coil & bead), and process intelligence (automated welding with data traceability) creates a joint whose integrity is intrinsic, permanent, and verifiable. Hence, it is the mandated 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 remove the oxidized layer, exposing clean material. Removes contamination that would hinder molecular diffusion, preventing weak bonds.

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

Step 3: Initiation & Heating:
Voltage is applied to the embedded resistance wire coil, heating uniformly to melt both fitting's inner surface and pipe's outer surface. Ensures a precise, uniform melt zone. Controlled heating is critical—cold spots lead to incomplete fusion and potential leaks.

Step 4: Melting & Interfusion:
Molten material from both parts merges. Internal pressure from thermal pipe expansion and fusion bead ensures intimate contact, forcing materials to intermix. The fusion bead melts to fill the gap, providing extra material to cover surface irregularities, ensuring no voids.

Step 5: Controlled Cooling:
Power is cut. Joint cools naturally and uniformly under restraint. Polymer chains solidify slowly, locking their structure in place. Prevents internal stress cracks from rapid quenching. A stress-free joint maintains integrity under cyclic pressure and temperature changes.

5.What is HDPE?
High-Density Polyethylene (HDPE) is a thermoplastic polymer made from petroleum. Known for its high strength-to-density ratio, it is strong yet lightweight. HDPE is a versatile plastic, known since the 1950s, popular for its durability, impact resistance, and ability to withstand various environmental conditions.
Using virgin HDPE raw materials from traceable sources is not just a procurement choice; it is the fundamental engineering decision that determines the ultimate performance, safety, and commercial value of pipe fittings. For Zhejiang Fengfeng Pipe Industry, specifying prime resins from leaders like SHANGHAI JINFEI PETROCHEMICAL and ZHEJIANG PETROLEUM & CHEMICAL (grades: BH 1064, TR480AT 1768, 23050 HDPE 2125366, 07111) delivers critical, measurable benefits.

(1).Guarantee of Core Performance & Long-Term Integrity
Virgin Material Role: Ensures PE100/PE100RC classification, withstanding rated pressure (e.g., PN16, PN25) for over 50 years. Recycled material risks: loss of strength, failure in type tests, high SCG risk leading to premature pipe bursts.

ESCR: Intact polymer offers superior resistance to chemicals and stresses, extending lifespan. Low ESCR: fittings are weak points; cracks under stress cause system failure.

Consistent Electrofusion Quality: Stable MFR and melting point ensure uniform heating and cooling, forming a perfect molecular bond. Variable composition and contaminants lead to uneven heating, poor fusion, and leaks.

Dimensional Stability & Low-Temperature Toughness: Predictable shrinkage for precision; excellent impact resistance at -20°C prevents brittle fractures. High warpage and brittleness lead to cracks during handling and cycles.

6. Critical Value for Projects & Business:
(1).Risk Mitigation & Safety Assurance:
Role: In pipelines, a faulty fitting can cause catastrophic failure. Virgin material is key to preventing systemic risks.
Value: Protects brand reputation and avoids high costs from liability claims, failures, and damage.

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

(3)..Lowest Total Cost of Ownership:
Role: Higher initial unit cost ensures a maintenance-free, zero-replacement system for 50+ years.
Value: Reduces lifetime costs for project owners. A single repair's cost exceeds the price difference in fittings.

(4).Foundation for Credible Quality Commitment:
Role: Traceability to renowned producers is a strong quality guarantee.
Value: Provides compelling proof to engineers, contractors, and tender boards, building trust and justifying a premium.

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