titanium weld neck flange
2.Size: NPS 1/2″ – 48″ (DN15 – DN1200), custom larger sizes available, Thickness: Sch5S – Sch160, XXS
3.Standard: ASME/ANSI B16.5, ASME B16.47, MSS SP-44, DIN 2631-2638, EN 1092-1, AWWA C207, JIS B2220, GB/T 9112, HG/T 20592
4.Type: Weld Neck (WN), Slip-On (SO), Blind (BL), Socket Weld (SW), Threaded (THR), Lap Joint (LJ), Plate, Orifice, Long Weld Neck
5. Processing Method: Titanium ingot → Forging → Heat treatment → CNC machining → Drilling → Surface finishing → Marking
6.State: Annealed
7.Surface Treatment: Machined bright
- Product Description
Titanium Weld Neck Flange
With more than 20 years of experience in titanium processing, Baoji Jucheng Titanium Industry Co., Ltd. produces precision-engineered titanium weld neck flange solutions. With tensile strengths ranging from 345 MPa to 895+ MPa and a density of about 4.51 g/cm³—45% lighter than steel—our flanges are forged from Grade 2, Grade 5 (Ti-6Al-4V), and Grade 7 titanium alloys. We guarantee prompt delivery and reliable quality with an annual inventory of 3,000 tons and a production capability surpassing 500 pieces of titanium equipment annually. Strict ASME B16.5/B16.47 and ASTM B381 compliance testing is performed on each titanium flange, which has tapered hubs that maximize stress distribution throughout Class 150 to Class 2500 pressure ratings for vital industrial pipelines.
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Why Choose Our Titanium Weld Neck Flanges?
Stress is transferred straight from the flange to the pipe thanks to the tapered hub design. High-stress concentration zones at the base are thus eliminated.
Extreme pressure cycles and thermal expansion occur in your piping systems. These circumstances cause standard stainless steel flanges to fail. This issue is resolved by our flanges.
Of all the flange kinds, the butt-weld connection offers the highest level of structural integrity. In applications requiring vibration and bending forces, you receive exceptional fatigue resistance.
The self-healing TiO₂ oxide coating is resistant to stress corrosion cracking, pitting, and crevice corrosion. Up to 260°C, your equipment functions dependably in seawater, moist chlorine, and oxidizing acids.
Our 120,000-square-meter facility combines non-destructive testing, CNC precision machining, and research and development. Dimensionally precise flanges with ideal bevel angles (37.5°) for seamless welding are delivered to you.
Technical Specifications
Parameter | Details |
Grades Available | Gr1, Gr2, Gr5 (Ti-6Al-4V), Gr7, Gr9, Gr12, Gr23 (Ti-6Al-4V ELI) |
Size Range | NPS 1/2″ – 48″ (DN15 – DN1200), custom larger sizes |
Thickness | Sch5S – Sch160, XXS |
Standards | ASME/ANSI B16.5, ASME B16.47, MSS SP-44, DIN 2631-2638, EN 1092-1, AWWA C207, JIS B2220, GB/T 9112, HG/T 20592 |
Pressure Ratings | Class 150 – Class 2500 |
Tensile Strength | 345 MPa (Gr2) to 895+ MPa (Gr5) |
Density | ~4.51 g/cm³ |
Temperature Range | Cryogenic to 600°F (315°C) depending on grade |
State | Annealed |
Surface Finish | Machined bright |
Key Performance Advantages
Superior Corrosion Resistance
The passive TiO₂ film regenerates automatically when scratched. Your titanium flange remains immune to chloride attack in marine environments.
Exceptional Strength-to-Weight Ratio
You reduce static loads on piping supports by 45% compared to steel. This lowers installation costs and structural requirements.
Outstanding Fatigue Life
The tapered hub geometry distributes cyclic stresses evenly. Your pipeline withstands millions of pressure fluctuations without seal failure.
Wide Temperature Capability
Our Grade 5 flanges maintain structural stability in LNG cryogenic systems and high-temperature chemical reactors.
Low Modulus of Elasticity
Titanium's flexibility absorbs thermal expansion better than rigid alloys. You prevent cracking at welded joints during temperature swings.
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Quality Assurance
Our quality control system ensures every titanium weld neck flange meets your specifications:
· Material verification through spectroscopic analysis
· Dimensional inspection per ASME standards
· Hydrostatic pressure testing to validate ratings
· Ultrasonic and radiographic examination
· Surface finish verification
· Complete traceability documentation
As a National High-Tech Enterprise with 4 invention patents and 41 utility model patents, we maintain industry-leading standards.
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Application Industries
We serve demanding sectors where failure is not an option:
· Chemical Processing: Handling oxidizing acids, wet chlorine, and hypochlorites
· Marine Engineering: Seawater systems, desalination plants, offshore platforms
· Aerospace: Lightweight hydraulic systems requiring high reliability
· Pharmaceutical Manufacturing: Sterile processing equipment with biocompatibility requirements
· Food & Beverage: Sanitary piping systems resistant to cleaning agents
· Power Generation: Condenser systems and cooling circuits
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Frequently Asked Questions
Q: What distinguishes a slip-on flange from a weld neck?
A: The tapered hub of weld neck flanges progressively changes to the thickness of the pipe wall. Better fatigue resistance and stress dispersion are offered by this design. Slip-on flanges are fillet welded and merely glide over the pipe. Weld neck flanges perform noticeably better in high-pressure or cyclic loading applications.
Q: How can I choose the appropriate titanium grade for my application?
A: For moderate temperatures, Grade 2 offers outstanding formability and corrosion resistance. For high-pressure systems, Grade 5 (Ti-6Al-4V) offers the highest strength. Palladium is added in grade 7 to improve resistance to reducing acids. To discuss your unique operating conditions, get in touch with our technical staff.
Q: Is it possible to produce flanges with non-standard dimensions?
A: Yes. Our 183-mu manufacturing park and CNC machining facilities can handle bespoke diameters larger than NPS 48". We create flanges with exact tolerances based on your engineering designs. Rapid prototyping is also supported by our 3,000-ton inventory.
Q: What paperwork is included with every order?
A: We provide raw material batches with material test reports (MTR), heat treatment records, dimensional inspection certificates, and complete traceability. For your quality assurance requirements, all documents meet ASME and ASTM standards.
Contact Us
Ready to upgrade your piping systems with proven titanium technology? Our engineering team is available to discuss your project requirements and provide technical solutions. Reach us at s4@juchengti.com for quotes, specifications, or titanium weld neck flange application support today.
