Product Item: Boiler End Cap, Boiler Head, Carbon Steel
Material (Cap Body): ASTM A105N
Material (Fitting): ASTM A234 WPB
Nominal Size: 36 * 12 Inch
Wall Thickness: 15.09 mm
Schedule: SCH 80
Pipe Standard: ASME B36.10
Manufacturing Process: Welding
End Connection: Flanged
Application: Heat Exchange

Source: https://www.landee.cn/boiler-end-cap-astm-a105n-astm-a234-wpb-36-12-in-flanged.html