Product Name: DN700 Weld Neck Flange, CS Flange
Type: Weld Neck Flange
Standard: ASME B16.5
Material: ASTM A105 (Carbon Steel)
Size: DN700, 700 mm, 28 Inch
Pressure Rating: PN25, Class 300 LB
Wall Thickness: SCH 40
End Connection: RF (RTJ)

Source: https://www.landee.cn/dn700-weld-neck-flange-asme-b16-5-astm-a105-pn25-rf-rtj.html