Nickel Alloy Flanges

Product Overview

Nickel Alloy Flanges are engineered for extreme environments in oil & gas, chemical processing, nuclear power, and marine industries. Manufactured from premium grades like ​Inconel 625, ​Hastelloy C-276, and ​Monel 400, and compliant with ​ASME B16.5, ​EN 1092-1, and ​API 6A standards, these flanges deliver unmatched performance in high-pressure, high-temperature, and corrosive media applications.

​Product Specifications

​Material & Manufacturing

• Grades: Inconel 600/625/800HT, Hastelloy C-22/C-276, Alloy 20
• Standards: ASTM A182/B564, ASME B16.5/B16.47, NACE MR0175
• Surface Finish: Polished (Ra≤0.4μm), Pickling & Passivation, Shot Blasted

​Types & Design

• Types: Weld Neck, Slip-On, Blind, Threaded, Socket Weld
• Face Types: Raised Face (RF), Ring-Type Joint (RTJ), Flat Face (FF)
• Pressure Classes: Class 150 to Class 2500 (PN10-PN420)

​Dimensions & Performance

• Size Range: 1/2″ to 60″ (DN15-DN1500)
• Temperature Range: -200°C to 800°C
• Pressure Rating: Up to ​15,000 PSI(ASME B31.3 Compliance)

​

Key Advantages

✅ ​Corrosion Resistance: Resists H2S, chlorides, acids, and seawater (NACE MR0103/MR0175 certified).
✅ ​High-Temperature Stability: Maintains structural integrity up to 800°C (Inconel 625).
✅ ​Zero Leakage: Precision-machined sealing surfaces with 100% hydrostatic/RT testing.
✅ ​Custom Solutions: Exotic alloys (Incoloy 825), cladding (PTFE/Inconel overlay), and non-standard drilling patterns.

​Applications

• ​Oil & Gas: Subsea pipelines, sour gas wellheads, LNG terminals
• ​Chemical Plants: Reactor flanges, sulfuric acid processing
• ​Nuclear Power: Reactor coolant loops, spent fuel systems
• ​Marine Engineering: Seawater desalination, ballast systems
• ​Renewables: Hydrogen compression, geothermal steam lines

​Certifications

• ISO 9001:2015, PED 2014/68/EU, API 6A/6H
• NORSOK M-630, ASME Section VIII Div. 1
• Full PMI (Positive Material Identification) and MTC traceability

​

Packaging & Logistics

• ​Export Packaging: VCI-coated wooden crates with edge protectors and desiccant.
• ​Shipping: FOB/CIF/DDP terms; urgent nuclear-grade orders via air freight.
• ​Lead Time: 20-30 days (standard), 45-60 days (custom alloys/cladding).

​

Why Partner With Us?

🔹 ​Vertical Integration: In-house forging, machining, and NDT testing facilities.
🔹 ​Technical Expertise: Free flange stress analysis (FEA) and ASME code compliance support.
🔹 ​Quality Assurance: 100% dimensional checks, UT/PT testing, and PMI verification.
🔹 ​Global Reach: Trusted by Shell, TotalEnergies, and Mitsubishi Heavy Industries.