Transmission Flange Forgings - High-Strength Power Transmission Components
Engineered for Demanding Drivetrain Applications
Our transmission flange forgings are precision-manufactured using SAE8620H alloy steel through closed-die forging process, ensuring optimal grain structure for maximum durability in heavy-load applications.
Key Advantages of Our Forged Valve Bodies
Material Superiority
High-Strength Alloy Steel
SAE 8620H and 4140 forged blanks
Optional quench and temper heat treatment (HRC 28–42)
Enhanced toughness for high-pressure and high-cycle environments
Corrosion-Resistant Options
Stainless steel: A182 F304 and F316
Duplex and Super Duplex: F51 and F53 for sour service or offshore use
Precision Manufacturing
Tight Tolerances
±0.25 mm machining accuracy, outperforming cast valve bodies
5-axis CNC machining enables complex geometries with high repeatability
Surface Finishes
As-machined: Ra 3.2 μm
Precision ground: Ra 0.8 μm
As-forged finish available for secondary welding or machining
Custom Solutions
Size Range
From 50 mm to 800 mm in diameter
Bolt Patterns
Custom drilling available to match non-standard flange connections
Special Features
API 607 fire-safe design for hazardous environments
Cryogenic treatment options for LNG and low-temperature service
Performance Benefits
30 percent higher fatigue life compared to cast flanges
Excellent impact resistance at low temperatures down to -46°C (-50°F)
Leak-proof sealing performance rated to ANSI B16.34 Class VI
Long-term reliability in high-cycle and corrosive operating conditions
Quality Assurance
100 percent ultrasonic testing (UT) for internal flaw detection
Full material traceability with MTR 3.1 or 3.2 certificates
ISO 9001:2015 certified manufacturing system
Third-party inspection available from DNV, ABS, or Lloyd’s Register
Industrial Applications
Agricultural Equipment: Tractor PTO systems
Construction Machinery: Excavator final drives
Mining Equipment: Crusher drive assemblies
Wind Energy: Gearbox flange connections
Marine Propulsion: Shaft coupling systems
Technical Specifications
| Parameter | Specification |
|---|---|
| Material Grades | SAE8620H, 4140, 4340, Custom |
| Forging Process | Closed-die forging |
| Heat Treatment | Normalizing, Q&T, Case Hardening |
| Standard Tolerance | ±0.25mm |
| Testing Methods | UT, MPI, Hardness Testing |
| Surface Finish | 3.2-12.5μm Ra |
Why Our Flange Forgings?
Longer Service Life: Dense grain structure prevents premature failure
Cost Efficiency: Reduced machining requirements save 15-20% production costs
Fast Delivery: 20-30 days lead time for standard sizes
Engineering Support: DFM analysis & CAD file optimization
Request Your Custom Quote
Contact our forging experts for:
Technical drawings review
Material certification
Volume pricing (MOQ 100 pieces)
