Product Name: Carbon Steel 45° Elbow
Type: 45° Elbow
Standard: ANSI B16.9
Material: ASTM A234 WPB, Carbon Steel
Size: 16 Inch
Wall Thickness: SCH 40
End Connection: Butt Weld
Surface Treatment: Blackening

Source: https://www.landee.cn/carbon-steel-45-elbow-ansi-b16-9-a234-wpb-16-inches-bw.html