Product Name: AISI 4130 Slip On Flange, High Pressure Upstream
Standard: API 6A
Material: AISI 4130 Alloy Steel
Size: 6 Inch, DN150
Pressure: 5000 PSI
Facing: RTJ
Surface: Epoxy Coated
Source: https://www.landeeflange.com/aisi-4130-slip-on-flange-api-6a-6-in-5000-psi-rtj-face.html