Product Name: ASTM A105 Weld Neck Flanges (WN)
Standard: ASME B16.5
Material: ASTM A105
Size: 6 Inch
Pressure: Class 150 LB
Wall Thickness: SCH 40
Coating: Black Painting
Source: https://www.landee.cn/carbon-steel-weld-neck-flange-asme-b16-5-a105-6-in-cl150.html