Product Name: JIS B2220 Slip On Flange
Type: Slip-on Flange (SOH)
Design Standard: JIS B2220
Material: ASTM A105, HDG
Size: JIS 500A, DN500
Pressure Rating: JIS 10K
Sealing Face: Raised Face, Serrated
Surface Treatment: Hot-Dip Galvanized Zinc Coated

Source: https://www.landeeflange.com/jis-b2220-slip-on-flange-astm-a105-500a-dn500-10k-hdg.html