Small Bore DN15-DN50 Stainless Steel Plate Flange ASTM A182 F304 ANSI B16.5 Compact Flange

Our small bore stainless steel plate flanges covering the DN15 through DN50 range are precision-forged for tight-tolerance applications where space constraints and connection accuracy are paramount. Manufactured from ASTM A182 F304 stainless steel, these compact flanges are ANSI B16.5 compliant and ideally suited for instrumentation lines, sampling systems, hydraulic connections, and compact equipment piping. The small bore range represents the most frequently used sizes in industrial plants, and we maintain extensive inventory for rapid fulfillment.

• DN15-DN50 Comprehensive Coverage
  Six standard sizes covering the complete small bore spectrum (1/2 inch through 2 inch) from a single qualified manufacturer, simplifying procurement and ensuring consistent quality
• Precision Machining
  Tight dimensional tolerances on bore ID, bolt circle, and flange thickness ensure perfect fit-up with small-diameter instrumentation tubing, hydraulic lines, and sampling systems
• High-Volume Availability
  50,000 pieces per month production capacity for small bore flanges ensures short lead times even for bulk orders, with common sizes held in stock for immediate shipment
• Multi-Class Flexibility
  Available across Class 150, 300, and 600 pressure ratings within the same DN15-DN50 envelope, enabling standardization on a single flange type across varying pressure requirements
• Instrumentation-Grade Finish
  Optional electropolished surface finish for ultra-clean service in pharmaceutical, semiconductor, and high-purity gas applications

• Process instrumentation tubing and transmitter connections
• Analytical sampling system panel piping
• Hydraulic and pneumatic control line connections
• Laboratory and pilot plant utility piping
• Chemical injection and dosing system connections
• Compressed instrument air and nitrogen distribution
• Heat exchanger and condenser small-bore connections
• Steam tracing and condensate collection manifolds

ISO 9001:2015 certified. Every small bore flange undergoes PMI, precision dimensional inspection with calibrated gauges, and visual examination. EN 10204 3.1 material certificates provided. Small bore flanges are individually wrapped to protect machined surfaces during transit.