The Slip On Flange (SO) is a widely used pipe fitting designed for slip-on welding connection. It features a low hub and a flat face (usually with raised face RF) for easy alignment with the pipe end before welding.Manufactured from high-quality carbon steel (A105, Q235, 20#) or stainless steel (304, 316, 304L, 316L), our slip on flanges are precision forged and machined to meet international standards. The low hub design reduces stress concentration at the weld joint, while the raised face with concentric grooves ensures uniform gasket compression and reliable sealing.
Why Choose Us / Advantage
Material Traceability: Mill test certificates (MTC) provided for all materials.
Third-Party Test Available: We accept SGS, BV or TUV inspection at our factory.
Quick Lead Time: Standard sizes in stock; 3-7 days for delivery, 15-30 days for customized orders.
Export Packaging: Reinforced plywood cases with fumigation certificates, including flange protectors.
12-Month Quality Warranty: Replacement or repair available for non-artificial damage within the warranty period.
Technical Data
★ Standard: ANSI/ASME B16.5, GB/T 9119, DIN 2573, JIS B2220
★ Body Material: Carbon Steel (A105, Q235, 20#); Stainless Steel (304, 316, 304L, 316L)
★ Pressure Class: Class 150, 300, 600, 900 (PN10~PN100)
★ Size Range: DN15 ~ DN2000 (1/2" ~ 80")
★ Face Type: Raised Face (RF), Flat Face (FF)
★ Surface Treatment: Anti-rust oil (carbon steel) / Pickling & passivation (stainless steel)
Applications
● Municipal water supply and drainage pipelines
● Low-to-medium pressure chemical and petrochemical piping
● HVAC and heating/cooling systems
● Food and beverage processing piping systems
● General industrial piping for water, steam and compressed air
