Product Item: ASTM A234 WP11 Concentric Reducer
Type: Seamless Concentric Reducer
Standard: ASME B16.9
Material: ASTM A234 WP11
Size: 6 * 4 Inch
Wall Thickness: SCH 40
End Type: Butt Welded
Surface: Anti-Rust Black Coating
Source: https://www.landee.cn/astm-a234-wp11-concentric-reducer-asme-b16-9-6-4-inch-bw.html