90mm Wholesale PE-Rt II Ef Tee Automatic Welding with Heating Wire

Product Description

Product descriptions from the supplier:

EF Equal Tee	T20
	T25
	T32
	T40
	T50
	T63
	T75
	T90
	T110
	T125
	T140
	T160
	T180
	T200
	T225
	T250
	T280
	T315
	T355
	T400

Company Profile

 

About this supplier:
Zhejiang Fengfeng Pipe Industry Co., Ltd is a professional manufacturer specializing in a wide range of plastic pipe fittings, including PE/HDPE fittings (electrofusion fittings, butt fusion fittings, socket fusion fittings), PPR electrofusion fittings, PERT electrofusion fittings, siphonic drainage fittings (butt fusion siphone drainage, electrofusion siphone fittings), and marine aquaculture cage brackets. We also support custom mold development.

Our factory is located in Diankou Industrial Zone, Zhuji City, Zhejiang Province, China.With a dedicated workforce of over 100 employees and 50 injection molding machines, we maintain a daily production capacity of 20 tons.

Our Credentials & Capabilities: We hold comprehensive international certifications and approvals, including: UDEM CE Certification & Test Reports Drinking Water Safety Licenses ISO 9001:2015 (Quality Management System) ISO 14001:2015 (Environmental Management System) ISO 45001:2018 (Occupational Health and Safety Management) We possess several patented technologies, such as an Enhanced PE Electrofusion Fitting Patent and a Marine Aquaculture Equipment Anti-fouling Structure Patent. Our commitment to excellence is further recognized by our AAA Credit Enterprise rating in the bidding industry.

Our Commitment & Global Reach: Utilizing premium raw materials and stringent manufacturing processes, we have successfully established cooperative partnerships with clients across the Middle East, South America, Asia, and Europe. Whether you are an installation engineer, building materials/pipes purchaser, project leader/engineer, overseas warehouse owner, or bidding contractor, our team is ready to provide exceptional support with speed and professionalism from product selection to after-sales service. We are dedicated to meeting diverse customer needs through our extensive product portfolio and expert services.

We believe in building lasting partnerships, not just transactional relationships.

Company overview:

Competitive advantages:
New material
Good quality,competitive price(factory bulk QTY price)
Custom LOGO printing avaliable

Customization capabilities:

Trade show participation:

FAQs

1.Why choose us?

Factory Direct Pricing! Large Stock,Quality !
Manufactuer: Fittings from 20mm to 1400mm, rated for PN10 to PN25
custom branding & products, backed by three plants.
large inventory
Competitive pricing with strict, in-house quality control.
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 are commonly 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 achieve a zero-leakage, permanent joint through a meticulously controlled scientific process that creates a homogeneous, monolithic molecular bond between the fitting and the pipe. It is not merely a mechanical seal, but a fusion of materials 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:
The foundation is thermal fusion. The HDPE or PPR material, when heated to a specific melt temperature (~200-220°C), transitions from a solid to a viscous, molten state where the long polymer chains become mobile. Under controlled pressure, these chains from the fitting and the pipe interdiffuse and entangle across the interface. Upon cooling, they recrystallize together, forming a single, continuous material mass with no distinct boundary or 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 itself contains critical data that, when read by an intelligent welding unit, ensures the process itself is leak-proof:
Barcode/Data Matrix: Stores exact welding parameters (voltage, time, cool time) tailored for that specific fitting size and material batch.
Automatic Process Control: The welder reads the code and executes the cycle automatically, eliminating human error in setting time or voltage.
Real-Time Monitoring & Rejection: The welder monitors resistance, temperature, and energy input in real-time. If any parameter deviates from the strict window, it aborts the cycle and signals a failure, preventing a defective joint from being accepted.
Data Logging: A digital record (date, time, location, parameters) is created for each joint, providing traceability and proof of a correct, leak-proof installation.
4.>Comparison: Why Mechanical Fittings Can Leak:This highlights why electrofusion is fundamentally superior for permanent, leak-free performance:Feature    Electrofusion Joint.Mechanical/Gasketed Joint.Sealing Mechanism    Homogeneous molecular bond (the 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 is leak-proof because it eliminates the interface where leakage could occur. It is not a "seal" but a complete elimination of the seam. The combination 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. This is why 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 surface layer, ensuring clean, virgin material is exposed.    Removes contamination that would act as a barrier to molecular diffusion, preventing weak bonds.
Step 2: Clamping & Alignment:
Pipe and fitting are securely clamped in a straight, aligned position with a precise gap.Eliminates 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 embedded in the fitting. The coil heats uniformly, transferring heat conductively to melt both the fitting's inner surface and the pipe's outer surface.    Creates a precise, uniform melt zone. The controlled, even heating is critical-cold spots would lead to incomplete fusion and potential leak paths.
Step 4: Melting & Interfusion:
The molten material from both parts merges. Internal pressure from the thermal expansion of the pipe and the designated fusion bead inside the fitting ensures intimate contact and forces the materials to intermix.The fusion bead melts to fill the gap completely, providing additional material to compensate for any surface irregularities, guaranteeing no voids.
Step 5: Controlled Cooling:
Power is cut. The joint cools naturally and uniformly under maintained restraint. The polymer chains solidify slowly, locking their entangled structure in place.Prevents internal stress cracks (caused by 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. It is known for its high strength-to-density ratio, which means it is strong yet lightweight. HDPE is a versatile plastic that has been around since the 1950s and has grown in popularity due to its durability, resistance to impact, and ability to withstand various environmental conditions.
The use of brand-new, virgin HDPE raw materials from traceable sources is not merely 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 leading producers 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
Role of Virgin Material    Risk of Using Recycled/Off-Spec Material.Long-Term Hydrostatic Strength (LTHS).Ensures the fittings reliably meet PE100/PE100RC classification, capable of withstanding rated pressure (e.g., PN16, PN25) for a 50+ year service life.Dramatic loss of strength, failure to pass type tests, high risk of Slow Crack Growth (SCG) leading to premature, sudden pipe bursts.
2.>Environmental Stress Crack Resistance (ESCR).An intact polymer structure provides superior resistance to chemicals and installation stresses, extending lifespan in harsh soils and environments.Catastrophically low ESCR, making fittings the weak link where cracks initiate under stress, causing system failure.
3.>Consistent Electrofusion Quality    Stable Melt Flow Rate (MFR) and melting point ensure uniform heating, inter-diffusion, and cooling during electrofusion, creating a perfect molecular bond.    Variable composition and contaminants cause uneven heating, poor fusion, and cold joints-the direct cause of leaks.
4.>Dimensional Stability & Low-Temperature Toughness    Predictable shrinkage for precise molding; maintains excellent impact resistance even at -20°C, preventing brittle fracture.High warpage, poor tolerances, and high low-temperature brittleness, leading to cracks during handling, installation, or freeze-thaw cycles.

6.What is common Uses of PPR electrofusion pipe fittings?

PPR (Polypropylene Random Copolymer) electrofusion pipe fittings from Zhejiang Fengfeng Pipe Industry are primarily used in hot and cold water distribution systems where hygiene, longevity, and leak-free reliability are critical. Their unique combination of high-temperature resistance and the integrity of electrofusion joints makes them ideal for demanding applications.
Here are the common uses, categorized by sector:
1.>Building Services & Plumbing (Core Market):This is the most widespread application, replacing traditional metal pipes.
Domestic Hot & Cold Water Pipes:Inside walls and under floors for apartments, hotels, hospitals. Electrofusion creates invisible, permanent joints with zero risk of leakage behind finishes. Resists scale and corrosion, ensuring clean water.
Central Heating & Radiator Connections:For residential and commercial heating systems. Withstands continuous hot water at 70-80°C and occasional peaks higher, without degradation.
Underfloor Heating Manifold & Loops:Connecting manifold stations to floor circuits. Corrosion-free nature prevents sludge buildup that can choke systems. The smooth bore maximizes flow.
Solar Water Heating Systems:Handling stagnant, high-temperature water from solar collectors. PPR's thermal stability and oxidation resistance are superior to many plastics.
2.>Institutional & Commercial Facilities:Where system failure is unacceptable due to disruption or high foot traffic.Hospital & Laboratory Piping:For demineralized water, sanitizing hot water loops. The smooth, inert inner surface inhibits biofilm growth and meets strict hygiene standards.School, Hotel & Office Plumbing    Longevity and low maintenance are key. Systems last decades without needing repair, minimizing operational disruption.Food & Beverage Processing Lines    For non-critical process water (cooling, rinsing). Certified food-grade materials are available. Electrofusion joints are hygienic with no crevices.
3.>Industrial & Specialized Applications:Leveraging PPR's chemical resistance and thermal properties.
Chemical Transfer Lines:Transporting certain acids, alkalis, and saline solutions at low to moderate concentrations and temperatures where PPR is chemically compatible.
Compressed Air Lines (Non-lubricated):For factory compressed air networks. Moisture resistance prevents internal corrosion common in steel pipes, ensuring clean, dry air.
Wastewater & Drainage in Aggressive Environments    Handling chemical lab waste or other aggressive effluents where metallic pipes would corrode rapidly.

7.What is common Uses of PERT II electrofusion pipe fittings?

PE-RT II electrofusion pipe fittings are the preferred connection solution for pressurized hot and cold water systems where long-term reliability, leak-proof integrity, and resistance to high temperatures are critical. Their use is dominant in specific sectors due to the material's performance and the electrofusion method's robustness.

Here are the most common applications:
1. District Heating & Cooling Networks
2. Indoor Radiator Heating Systems (Wet Central Heating)
3. High-Temperature Underfloor Heating (UFH) Systems
4. Snow and Ice Melting Systems
5. Chilled Water / Cooling Distribution
6. Industrial Process Water Lines
7. Pre-Insulated Pipe System Repairs & Connections
                                                                                                                                                                          

8.Why PE-RT II Electrofusion?
Choosing Zhejiang Fengfeng Pipe Industry's PE-RT II Electrofusion is a deliberate and high-performance solution for modern piping systems, especially in heating applications. The reasons combine material superiority with connection reliability.

The Synergy of Material and Method:
PE-RT II Electrofusion is chosen because it creates a homogeneous, reliable, and leak-proof joint in a system designed for higher temperatures and pressures, offering significant advantages over alternative materials and connection methods.

Material Performance: PE-RT II offers the necessary high-temperature, high-pressure, and long-term stress resistance for modern hydronic systems.

Perfect Fusion Compatibility: As a thermoplastic, PE-RT II is ideally suited for electrofusion, which creates a joint as strong as the pipe itself.

System Reliability: The combination eliminates the weak points associated with mechanical joints, offering a leak-proof, maintenance-free system with a proven 50+ year lifespan.

Installation Assurance: The automated electrofusion process guarantees consistent, high-quality joints, reducing installation risk.

It represents the current gold standard for safe, durable, and efficient plastic piping in heating applications.