Product Name: ASTM A182 F304 Weld Neck Flanges
Type: Weld Neck Flange (WN)
Standard: ASME B16.5
Material: ASTM A182 F304
Size: 1 Inch
Wall Thickness: SCH 10
Facing: Raised Face

Source: https://www.landee.cn/astm-a182-f304-weld-neck-flanges-asme-b16-5-1-inch-sch-10.html