Long Weld Neck Flange
Pressure Classes: Class 150, 300, 400, 600, 900, 1500, 2500.
Material Excellence:
Carbon Steel: ASTM A105
Stainless Steel
Alloy Steel
Length Options: Available in Standard lengths or Bespoke Hub Lengths tailored to your specific vessel insulation and nozzle height requirements.
Facing Types: Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF).
Size Range: 1/2" – 24" (Standard) | Custom large diameters available on request.
- Free Samples
- Quality Assurance
- 24/7 Customer Service
Product Introduction
Long Weld Neck Flange - Professional Industrial Solution
Long Weld Neck Flange Manufacturer
Hebei Jinsheng Pipe Fitting Manufacturing Co., Ltd. stands as your trusted long weld neck flange producer with over 40 a long time of mechanical mastery. Our present day 7,000+ square meter office produces high-grade ribs with yearly deals surpassing RMB 100 million and month to month shipments outperforming 50 holders. We convey premium Long Weld Neck Rib arrangements that meet ASME/ANSI B16.5 measures over weight classes from 150 to 2500. Our progressed fabricating capabilities guarantee exact bore coordinating and predominant weld astuteness for your basic channeling applications.
Long Weld Neck Flange Overview
Long weld neck spines speak to the gold standard for high-pressure, high-temperature channeling frameworks. These spines include an expanded neck plan that gives extraordinary push dispersion and basic keenness. The progressive move from pipe to rib center decreases push concentration focuses, making them perfect for requesting mechanical applications.
Our product items offer prevalent execution in basic benefit conditions. The expanded neck plan permits for total entrance butt welding, making a consistent association between pipe and spine. This arrangement guarantees ideal stream characteristics and greatest joint reliability.
Key Features & Advantages
Enhanced Basic Keenness: The long neck plan gives prevalent stretch dissemination compared to standard weld neck ribs. This expanded setup essentially decreases weakness disappointment dangers in high-cycle applications.
Complete Weld Infiltration: Full infiltration butt welding makes a homogeneous joint with the pipe. This disposes of powerless focuses and guarantees reliable fabric properties all through the connection.
Superior Stream Characteristics: The smooth bore move keeps up reliable inner distance across. This plan minimizes weight drops and diminishes turbulence in your channeling system.
High-Temperature Execution: Expanded neck geometry gives way better warm push administration. Your framework works securely beneath extraordinary temperature variations.
Radiographic Testing Consistent: Butt weld setup permits total X-ray assessment. You can confirm weld quality all through the whole joint thickness.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturing Standard | ASME/ANSI B16.5, ASME B16.47 |
| Size Range | 1/2" to 48" (DN15 to DN1200) |
| Pressure Classes | 150, 300, 600, 900, 1500, 2500 |
| Facing Types | Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF) |
| Neck Length | Extended design per ASME specifications |
| Bore Type | Full bore, reduced bore available |
| Wall Thickness | Schedule 10 through XXS |
| Temperature Rating | -29°C to +538°C (-20°F to +1000°F) |
Standards & Certifications
Our long weld neck flange products comply with international standards including ASME/ANSI B16.5, ASME B16.47, and ASME B16.36. We maintain ISO 9001:2015 certification for quality management systems. Our manufacturing processes meet GOST-R and CE marking requirements for global market compliance.
Chemical Composition & Mechanical Properties
| Material Grade | Carbon | Manganese | Phosphorus | Sulfur | Silicon |
|---|---|---|---|---|---|
| ASTM A105 | ≤0.35% | 0.60-1.05% | ≤0.035% | ≤0.040% | 0.10-0.35% |
| ASTM A350 LF2 | ≤0.30% | 0.60-1.35% | ≤0.035% | ≤0.040% | 0.15-0.30% |
Mechanical Properties:
- Tensile Strength: 485-620 MPa
- Yield Strength: ≥250 MPa
- Elongation: ≥22%
- Impact Energy: ≥27J at -20°C
Manufacturing Process
Our precision manufacturing begins with certified raw materials from approved suppliers. Advanced CNC machining ensures exact dimensional tolerances. Heat treatment processes optimize mechanical properties and relieve internal stresses.
Quality forging techniques create superior grain structure. Machining operations maintain precise bore dimensions and facing requirements. Final inspection includes dimensional verification and non-destructive testing.
Surface Finish & Coating Options
Standard Finishes:
- Anti-rust oil protection for indoor storage
- Black lacquer coating for moderate environments
- Hot-dip galvanizing for corrosive conditions
Premium Options:
- Epoxy powder coating for chemical resistance
- Stainless steel overlay for extreme corrosion protection
- Custom coatings per your specifications
Applications
Long weld neck flange arrangements exceed expectations in requesting mechanical situations. Control era offices depend on these spines for steam and condensate frameworks. Oil and gas operations utilize them in high-pressure transmission lines.
Chemical preparing plants advantage from their erosion resistance and unwavering quality. Petrochemical refineries depend on their high-temperature execution. Marine applications utilize their auxiliary keenness in unforgiving saltwater environments.
Water treatment offices appreciate their leak-tight execution. Mining operations believe their toughness in grating conditions. These spines serve basic parts over numerous industries.
Packaging & Delivery
We ensure your flanges with proficient bundling materials. Wooden cases give predominant security for worldwide shipment. Plastic caps seal spine faces from defilement. Desiccant bundles avoid dampness harm amid transit.
Our coordinations group facilitates productive conveyance around the world. Holder optimization decreases shipping costs. Documentation incorporates fabric certificates and review reports. Following data keeps you educated all through delivery.
Customization Service
Our designing group creates custom arrangements for special applications. Non-standard measurements oblige uncommon channeling prerequisites. Altered neck lengths suit particular establishment limitations. Custom materials meet specialized benefit conditions.
We give specialized drawings for endorsement some time recently fabricating. Model improvement approves execution in basic applications. Our adaptability guarantees you get precisely what your extend demands.
Quality Control
Advanced testing gear confirms each item determination. Spectrometer investigation affirms fabric composition. Hydrostatic testing approves weight evaluations. Dimensional review guarantees culminate fit-up.
Non-destructive testing incorporates attractive molecule and color penetrant assessment. Our quality administration framework keeps up total traceability. Certified fabric test reports go with each shipment.
FAQ
Q: What advantages do flanges offer over standard weld neck designs?
A: The extended neck provides superior stress distribution and better fatigue resistance. This design significantly improves performance in high-pressure, high-temperature applications.
Q: Can you provide custom neck lengths for special installations?
A: Yes, we manufacture custom neck lengths to meet specific piping requirements. Our engineering team works with you to determine optimal dimensions.
Q: What inspection methods verify weld quality in long neck flanges?
A: We use radiographic testing for complete weld inspection. Ultrasonic testing provides additional verification of weld integrity throughout the joint.
Q: How do long neck flanges perform in thermal cycling applications?
A: The extended geometry provides excellent thermal stress management. This design significantly reduces thermal fatigue compared to shorter neck configurations.
Q: What delivery time should I expect for custom specifications?
A: Standard specifications ship within 3-4 weeks. Custom designs typically require 5-6 weeks depending on complexity and quantity requirements.
Contact Us
Ready to specify long weld neck flange solutions for your project? Contact our technical team at admin@jsfittings.com for expert assistance and competitive pricing.
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