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Food Grade SS304 SS316L Stainless Steel Elliptic Manhole Cover Oval Manway. Food Grade Materials: Constructed from SS304 and SS316L stainless steel for safe food processing. Customizable Dimensions: Available in sizes from 430*330mm to 635*525mm with custom height options. Wide Pressure Range: Operates safely within 0 to 3 bar pressure conditions. Multiple Sealing Options: Compatible with EPDM, FKM, NBR, SILICONE, and PTFE gaskets. Diverse Connection Types: Supports Weld, Clamp, and Thread connections for flexible installation. Global Standard Compliance: Meets DIN, 3A, SMS, ISO, IDF, and RJT industry standards. Comprehensive After-Sales: Includes 1-year warranty, network support, and engineer tutoring.