Product Name: ASTM A234 WPB 90 Degree Elbow, Seamless, Long Radius
Standard: ASME B16.9
Material: Carbon Steel ASTM A234 WPB
Size: 4 Inch, DN100
Wall Thickness: SCH 80
Surface Treatment: Black Painting
End Connection: BW
Source: https://www.landeepipefitting.com/astm-a234-wpb-90-deg-elbow-seamless-asme-b16-9-4-inch-lr.html