Product Name: ASTM A234 WPB Equal Tees
Design Standard: ASME B16.9
Material: ASTM A234 WPB, Carbon Steel
Size: 20 Inch, DN500
Wall Thickness: SCH STD
End Connetion: Butt Weld

Source: https://www.landeepipefitting.com/astm-a234-wpb-equal-tees-asme-b16-9-20-inch-sch-std-bw.html