ASTM A182 F304L Weld Neck Flange Class 300 designed specifically for power plant applications, featuring excellent stress distribution and reliable sealing performance.

Weld Neck Flange features a conical long neck that connects to pipelines via butt welding. This design provides smooth transition from flange to pipeline, effectively dispersing stress for high connection strength, minimal deformation, and superior sealing performance.

• Pipelines with significant temperature or pressure fluctuations
• High temperature and high pressure environments
• Low temperature and other harsh working conditions
• Critical pipelines transporting expensive, flammable, explosive, or toxic media

Standard: ASME B16.5, using "Class" as pressure unit with six grades from Class 150 to Class 2500.

Standard: EN 1092-1, using "PN" (nominal pressure) as unit representing maximum pressure (Bar) at room temperature, divided into multiple levels from PN2.5 to PN160.

• Flange Types: Welding Neck, Blind, Slip-On, Lap Joint, Socket Weld, Threaded, Spectacle Blind
• Surface: RF, FF, RTJ
• Materials: Austenitic, Duplex Steel
• Standards: ASME B16.5/16.47/16.36/16.48, JIS 2220, DIN 2502-2673, EN1092-1/1759-1, BS 4504/3293, AS 2129/4087, SABS1123, UNI 2277/2278, AWWA C207 API6A, GOST33259/10280/10281
• Applications: Pipe connection, Piping project construction
• Outer Diameter: 21.3-2032mm, DN15-DN2000, 1/2"-80"
• Pressure class: 150 - 2500lbs; class 150-class 2500

SMLSCO's forged flanges begin with high-quality round bar raw materials. After inspection, materials are cut and heated to specific temperatures, then forged using specialized equipment to achieve dense internal structure and excellent mechanical properties.

The forged blanks undergo heat treatment for performance optimization, followed by precision machining including turning, drilling, and chamfering. Final steps include cleaning, engraving, inspection, and professional packaging for storage and shipping.