Product Name: ASTM A234 WPB Concentric Reducer
Size: 4 x 6 Inch, DN100*DN150
Wall Thickness: SCH 40 x SCH 40
Material: Carbon Steel ASTM A234 WPB
End: Butt Weld
Surface Treatment: Black Painting
Source: https://www.landeepipefitting.com/astm-a234-wpb-concentric-reducers-4-6-inch-sch-40-bw.html