Lap Joint Flanges
- Design and Function: Lap joint flanges consist of a flange and a steel ring that compresses to form a seal, ideal for high-corrosion applications.
- Sealing Face Options: Available in multiple sealing face types, including RF, FM, M, T, G, FF, and RJ.
- Corrosion Resistance: Designed for use in steel, aluminum, and stainless steel containers, providing excellent corrosion resistance.
- Flexible and Movable: Allows for easy pipe disassembly by rotating the pipe while the bolts are tightened, making it ideal for maintenance.
- Standards Compliance: Manufactured according to GB/T 9112-2000, ANSI B16.5, JIS, DIN, HG, and JB standards for global compatibility.
Technical Specifications
| Parameter | Specification |
| Model No. | Lap Joint Flange |
| Structure | Round |
| Sealing Surface | RF (Raised Face) |
| Shape | Circle |
| Material Grade | 304, 316L, 321, 347H, etc. |
| Standard Compliance | ANSI B16.5, ASME B16.47, GB9112-9124, JIS B 2220-2001, DIN 2573/2572, etc. |
| Pressure Rating | ANSI Class 150, 300, 600, 900, 1500, 2500 lbs |
| Size Range | DN15-DN1500 (1/2″-60″) |
| Face Type | FF, RF, TG, RJ |
| Material | Carbon Steel, Stainless Steel, Alloy Steel |
| Applications | Marine, petrochemical, nuclear, thermal power, and industrial systems |
Customization & OEM Service
- Custom Sizes and Shapes: Manufactured to specific dimensions based on customer drawings.
- Flexible Materials: Options for carbon steel, stainless steel, and alloy steel.
- Sealing Face Customization: Available in various sealing face types (RF, FM, M, RJ, etc.).
- Global Shipping Support: Delivery options include FOB, CIF, and DDP.
Applications
- Marine Applications: Connecting pipes in corrosive environments such as offshore rigs.
- Petrochemical Industry: Ensuring reliable, leak-proof connections in chemical processing systems.
- Nuclear and Thermal Power: Used in high-temperature and high-pressure systems to ensure safety and stability.
- Industrial Pipelines: Suitable for water supply and drainage systems, and hydraulic piping systems.
Manufacturing Capabilities
Forging Facilities
- 6300T / 3150T / 2000T free hydraulic presses.
- 5T, 3T, 2T, 1T, 750kg, 560kg electro-hydraulic hammers.
Heating Treatment Facilities
- RTX-9 series trolley furnaces in multiple sizes (5.5–8 m chamber length).
- RJ-9-850KW vertical furnace with 15 m depth.
- RTX-12-350KW high-temperature trolley furnace.
Machining Facilities
- CNC machines (max 32-ton load).
- Heavy-duty lathes and vertical mills (up to 70 tons).
- Gantry milling machines, deep-hole boring machines, grinding and turning centers.
Testing & Quality Control
- Spectrum analysis for chemical composition.
- Ultrasonic, non-destructive, and metallographic testing.
- Mechanical property test machines for yield, tensile, hardness.
Production Process
- Raw Material Selection: Use first-grade ingot steel, inspect chemical composition.
- Forging: Heat to precise temperature, perform open die or die forging.
- Heat Treatment: Quenching, tempering, or normalizing to meet mechanical targets.
- Machining: CNC turning, boring, milling, grinding, and drilling to precision ±0.01 mm.
- Inspection: Each shaft tested via 100% ultrasonic, hardness, and tensile checks.
- Packaging & Delivery: Anti-corrosion coating, safe transport packaging, global logistics support.
Additional Value-added Services
- Quench-and-temper heat treating
- Rough and finish turning
- Ultrasonic and mechanical testing
- Dimensional inspection reports
- Customized design and programming support
Quality Assurance
- Each forging carries a test bar for mechanical testing.
- 100% ultrasonic and visual inspection before shipment.
- Hardness, tensile, and metallographic verification.
- Compliance with ASTM, DIN, GB, and EN standards.
Why Choose Boberry
Integrated Production
Complete forging-to-machining production line ensures precision and fast delivery.
Advanced Equipment
Heavy-duty forging presses and CNC systems handle large, complex mechanical component geometries.
Certified Assurance
Certified production with ISO9001, PED, SGS compliance and global OEM support.
Logistics & Delivery
Lead Time: 15–30 days (urgent) / 30–45 days (normal).
Monthly Capacity: 500–1000 tons.
Packing: Wooden crates, steel frames, or per client request.
Shipment: By Sea (recommended, saves cost for forging parts) / By Air (fast but expensive).
Payment Terms: 30% deposit with balance via B/L copy; or 100% L/C at sight.
Delivery Terms: FOB, CIF, CNF.
Monthly Capacity: 500–1000 tons.
Packing: Wooden crates, steel frames, or per client request.
Shipment: By Sea (recommended, saves cost for forging parts) / By Air (fast but expensive).
Payment Terms: 30% deposit with balance via B/L copy; or 100% L/C at sight.
Delivery Terms: FOB, CIF, CNF.