Product Name: Copper Alloy Weld Neck Flange
Type: Weld Neck Flange
Design Standard: ANSI B16.5
Material: Copper Alloy, ASME SB151 UNS C71500
Size: 4 Inches, DN100
Class Rating: Class 600 LB, PN100
Wall Thickness: 8.56 mm (SCH 80)
Sealing Face: Raised Face

Source: https://www.landeeflange.com/asme-sb151-uns-c71500-wn-flange-ansi-b16-5-4-in-cl600-rf.html