Precision CNC Machined Stainless Steel Flat Weld Flange for Pipe Sealing Applications

Our Custom CNC Flat Weld Flange is a precision-machined component specifically designed for sealing pipe connections in fluid and gas transfer systems. It is widely used in oil & gas, chemical processing, petrochemical, water treatment, food-grade piping systems, and mechanical engineering applications. Each flange is manufactured using high-grade stainless steel (SS304, SS316, or SS316L), ensuring excellent resistance to corrosion, high temperature, and pressure conditions.

Produced through advanced CNC turning processes, this flange meets tight dimensional tolerances and provides a clean, burr-free surface finish. The flat-face design allows for strong, uniform welding and provides a reliable sealing surface when mated with gaskets or O-rings in pipeline assemblies.

Key Technical Specifications:

• Material: Stainless Steel (SS304 / SS316 / SS316L)
• Manufacturing Process: High-precision CNC Turning
• Optional Processes: Drilling, threading, chamfering, face milling
• Surface Finish: Natural stainless finish (Ra ≤ 1.6μm), optional passivation
• Standard: Custom non-standard, or according to ANSI / DIN / JIS / GB
• Tolerance: Up to ±0.01mm (custom tolerances available)
• Outer Diameter Range: Typically from Ø25mm to Ø300mm (customizable)
• Thickness: Customizable as per drawing or sample
• Packaging: Anti-rust packaging, vacuum bag or foam-protected cartons

Features & Benefits:

• High Precision Machining: Each flange is produced on CNC turning centers, ensuring accurate concentricity, flatness, and smooth sealing surfaces.
• Durability: Made from corrosion-resistant stainless steel to ensure long service life in harsh environments.
• Weld-Ready Design: Flat-face weld flange design is ideal for seamless integration into piping systems.
• Leak-Proof Sealing: Ideal for high-pressure and vacuum systems requiring reliable sealing.
• Customization Available: Dimensions, hole patterns, grooves, keyways, threads, and other features can be tailored to your specific application.

Our Machining & Production Capabilities

At Shuangxin Industry, we provide end-to-end custom CNC machining services, specializing in complex and high-precision components for global OEMs and industrial customers.

Machinery & Capacity:

• CNC Turning Centers: High-speed lathes with live tooling (Y-axis) for milling and drilling operations
• Turning Diameter Capacity: From 2mm up to 500mm
• 3/4/5-Axis CNC Milling Machines for secondary operations
• Surface Finish Achievable: Down to Ra 0.4μm (with polishing)
• Tolerance Control: ±0.005mm for precision-critical features
• Material Expertise: Stainless steel, carbon steel, aluminum, brass, copper, and engineering plastics