Comparison : Item # 0H1500WNAN, ANSI B16.5 Class 1500 Welding Neck Flanges
Item # 3Q1500WNAN, ANSI B16.5 Class 1500 Welding Neck Flanges
Item # 011500WNAN, ANSI B16.5 Class 1500 Welding Neck Flanges
Item # 1Q1500WNAN, ANSI B16.5 Class 1500 Welding Neck Flanges
Item # 1H1500WNAN, ANSI B16.5 Class 1500 Welding Neck Flanges