B16.5 Class 1500 A182 F53 Blind Flange Rtj

This blind flange is manufactured in accordance with ASME B16.5 standard, with pressure rating Class 1500 and RTJ ring‑joint face. The material is ASTM A182 F53 (UNS S32750) super duplex steel, produced by full forging process. Adopting metal‑to‑metal RTJ sealing design, it matches octagonal or oval metal ring gaskets and delivers reliable sealing performance under high‑pressure service conditions to prevent medium leakage.

A182 F53 super duplex steel features high mechanical strength, outstanding resistance to chloride‑induced pitting, crevice corrosion and sulfide stress cracking. Its minimum yield strength reaches 550 MPa and minimum tensile strength is 800 MPa. Each piece undergoes solution heat treatment and non‑destructive testing. Dimensions, bolt holes and ring‑groove tolerance strictly comply with ASME B16.5. Full size range from NPS 1/2 to NPS 24 is available. It is widely applied for pipeline end closure and equipment port blocking in overseas petrochemical, offshore platform and seawater‑handling industrial projects.