PE100 Stainless Steel Nipple HDPE Brass Threaded Transition Adapter

• Customization: Available
• After-sales Service: Installation Guidance
• Connection: Male
• Model NO.: 50mm*1-1/2\"male & female
• Head Code: Round
• Thread Distribution: Internal Thread
• Surface: Injection
• Material: Stainless Steel HDPE/Brass
• Technics: Injection
• Application: Water Pipe
• Customized: Accept
• Certification: ISO,CE,Wras
• Warranty: 1 Year
• Product Name: Threaded Adaptor
• Keywords: Hot Melt Threaded Adaptor
• Usage: Water Supply,Industrial,Agricultural Irrigation
• OEM: Available
• Delivery Time: 2-15 Days
• Color: Black
• Transport Package: Standard Packaging or Customized
• Specification: Standard Specifications or Customized
• Trademark: FENGFENG PIPE
• Origin: Zhejiang, China
• HS Code: 39174000
• Production Capacity: 2000000 Pieces/Year

Product Description

Product Description

HDPE Metal Transition Adapter (Stainless Steel/Brass)
Electrofusion & Butt Fusion Compatible Threaded Transition Fitting for PE Pipeline Connections

Zhejiang Fengfeng industry's  HDPE Brass & Stainless Steel Transition Adapter Couplings are high-performance pipe fittings specifically designed to provide a reliable connection between HDPE (High-Density Polyethylene) piping systems and threaded metal components. By combining a PE100 HDPE body with precision-machined brass or stainless steel inserts, these transition adapters create a strong, leak-free interface between plastic pipelines and metal equipment such as valves, pumps, water meters, pressure gauges, tanks, and industrial machinery.

The HDPE section is manufactured from premium-grade PE100 material, offering excellent flexibility, impact resistance, and long-term durability. It can be joined to HDPE pipelines through butt fusion or electrofusion welding, creating a homogeneous connection with the pipe that eliminates potential leak paths. The integrated metal insert, available in brass or stainless steel, provides robust threaded connections capable of withstanding high mechanical loads, vibration, and repeated assembly and disassembly.

One of the key advantages of these transition couplings is their exceptional corrosion resistance. Unlike traditional steel fittings that may rust or deteriorate over time, brass and stainless steel inserts resist moisture, chemicals, salts, and harsh environmental conditions. Combined with the non-corrosive properties of HDPE, the fitting maintains long-term structural integrity even in buried installations, coastal regions, industrial facilities, and chemically aggressive environments.

Designed for demanding pressure applications, these transition adapters deliver excellent sealing performance and mechanical strength. The reinforced metal insert prevents thread deformation and ensures a secure connection under pressure fluctuations and temperature changes. Precision manufacturing tolerances guarantee accurate thread engagement, reducing the risk of leakage while enhancing overall system reliability.

Application

Potable water distribution systems
Municipal water supply networks
Natural gas transmission and distribution
Agricultural irrigation pipelines
Industrial fluid transportation
Mining slurry and water systems
Wastewater and drainage projects
Fire protection and sprinkler systems
Pumping stations and valve connections
Marine and coastal infrastructure projects
By combining the advantages of HDPE and high-quality metal materials, HDPE Brass & Stainless Steel Transition Adapter Couplings provide a durable, safe, and cost-effective solution for connecting polyethylene pipelines to threaded metal equipment in a wide variety of infrastructure and industrial applications.

Product Parameters

PE To Steel Transition Fittings	Stainless Steel	20mm×1/2"	Male
PE To Steel Transition Fittings	Stainless Steel	25mm×3/4"	Male
PE To Steel Transition Fittings	Stainless Steel	32mm×1"	Male
PE To Steel Transition Fittings	Stainless Steel	40mm×1-1/4"	Male
PE To Steel Transition Fittings	Stainless Steel	50mm×1-1/2"	Male
PE To Steel Transition Fittings	Stainless Steel	63mm×2"	Male
PE To Steel Transition Fittings	Stainless Steel	75mm×2-1/2"	Male
PE To Steel Transition Fittings	Stainless Steel	90mm×3"	Male
PE To Steel Transition Fittings	Stainless Steel	110mm×4"	Male
PE To Steel Transition Fittings	Stainless Steel	20mm×1/2"	Female
PE To Steel Transition Fittings	Stainless Steel	25mm×3/4"	Female
PE To Steel Transition Fittings	Stainless Steel	32mm×1"	Female
PE To Steel Transition Fittings	Stainless Steel	40mm×1-1/4"	Female
PE To Steel Transition Fittings	Stainless Steel	50mm×1-1/2"	Female
PE To Steel Transition Fittings	Stainless Steel	63mm×2"	Female
PE To Steel Transition Fittings	Stainless Steel	75mm×2-1/2"	Female
PE To Steel Transition Fittings	Stainless Steel	90mm×3"	Female
PE To Steel Transition Fittings	Stainless Steel	110mm×4"	Female
PE To Steel Transition Fittings	Brass	20mm×1/2"	Male
PE To Steel Transition Fittings	Brass	25mm×3/4"	Male
PE To Steel Transition Fittings	Brass	32mm×1"	Male
PE To Steel Transition Fittings	Brass	40mm×1-1/4"	Male
PE To Steel Transition Fittings	Brass	50mm×1-1/2"	Male
PE To Steel Transition Fittings	Brass	63mm×2"	Male
PE To Steel Transition Fittings	Brass	75mm×2-1/2"	Male
PE To Steel Transition Fittings	Brass	90mm×3"	Male
PE To Steel Transition Fittings	Brass	110mm×4"	Male
PE To Steel Transition Fittings	Brass	20mm×1/2"	Female
PE To Steel Transition Fittings	Brass	25mm×3/4"	Female
PE To Steel Transition Fittings	Brass	32mm×1"	Female
PE To Steel Transition Fittings	Brass	40mm×1-1/4"	Female
PE To Steel Transition Fittings	Brass	50mm×1-1/2"	Female
PE To Steel Transition Fittings	Brass	63mm×2"	Female
PE To Steel Transition Fittings	Brass	75mm×2-1/2"	Female
PE To Steel Transition Fittings	Brass	90mm×3"	Female
PE To Steel Transition Fittings	Brass	110mm×4"	Female

Detailed Photos

Step 1: Prepare the Pipe and Fitting

Step 2: Connect the HDPE Side

Inspect the HDPE pipe and transition adapter to ensure they are clean, undamaged, and free from dust, oil, or moisture. Cut the HDPE pipe squarely using a suitable pipe cutter and remove any burrs from the pipe end. Confirm that the fitting size, thread type, and pressure rating match the system requirements before installation.

Join the HDPE end of the transition adapter to the polyethylene pipe using the appropriate welding method, such as butt fusion or electrofusion. Follow the recommended fusion parameters, including heating temperature, pressure, and cooling time. After welding, allow the joint to cool completely to achieve maximum strength and a leak-free connection.

Step 3: Install the Metal Thread Connection

Step 4: Inspect and Pressure Test the System

Apply a suitable thread sealant or PTFE tape to the male threaded connection if required. Carefully connect the brass or stainless steel threaded end to the valve, pump, meter, or other pipeline equipment. Tighten the connection using appropriate tools without applying excessive force that could damage the threads or fitting.

After all connections are completed, visually inspect the installation to ensure proper alignment and secure fastening. Perform a hydrostatic or pneumatic pressure test according to project specifications and applicable standards. Verify that there are no leaks and that the system operates safely before putting the pipeline into service.

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 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.

2. Critical Value for Projects & Business:
(1).Risk Mitigation & Safety Assurance:
Role: In gas, potable water, or chemical pipelines, a single faulty fitting can cause catastrophic failure. Virgin material is the primary and most critical barrier against such systemic risks.
Value: Protects brand reputation and avoids astronomical costs from liability claims, project failures, and environmental damage.
 
(2).Passport to International Certification & Markets:
Role: All high-end certifications (CE, ISO, WRAS) require full traceability and certified performance data of the raw material. Only virgin resin can provide this.
Value: It is a non-negotiable prerequisite for entering regulated markets like the EU, Middle East, and North America.
 
(3)..Lowest Total Cost of Ownership:
Role: While the initial unit cost is higher, it guarantees a maintenance-free, zero-replacement system for over 50 years.
Value: For project owners and operators, this dramatically reduces lifetime costs. The expense of a single repair (especially excavation) far outweighs the minor price difference in fittings.
 
(4).Foundation for Credible Quality Commitment:
Role: Traceability to renowned petrochemical producers serves as a powerful quality guarantee.
Value: In communications with engineers, contractors, and tender boards, this is the most compelling technical proof, significantly building trust and justifying a premium.
 
Conclusion: The Strategic Message
Emphasizing the use of traceable, virgin raw materials communicates a powerful strategic 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 safeguard your projects against decades of operational risk and potential catastrophic cost. This is not just a fitting—it's a 50-year performance warranty."
This shifts the competitive narrative from price to value, responsibility, and risk management, establishing Zhejiang Fengfeng Pipe Industry as a provider of critical infrastructure solutions, not just commodities.