Pipe flange

The Welding neck flanges is normally referred to as the high hub flange. It is designed to transfer stresses to the pipe, thereby reducing high stress concentrations at the base of the flange. The welding neck flange is the best designed butt-welded flange of those currently available becuase of its inherent structural value. It is expensive because of the design. Standards, Dimensions & Weight ASME/ANSI B16.5 Class 150 WN ASME/ANSI B16.5 Class 300 WN ASME/ANSI B16.5 Class 600 WN ASME/ANSI B16.5 Class 900 WN ASME/ANSI B16.5 Class 1500 WN ASME/ANSI B16.5 Class 2500 WN ASME B16.47 Series A/MSS SP-44 Class 150 WN ASME B16.47 Series A/MSS SP-44 Class 300 WN ASME B16.47 Series A/MSS SP-44 Class 600 WN ASME B16.47 Series A/MSS SP-44 Class 900 WN ASME B16.47 Series B/API 605 Class 75 WN ASME B16.47 Series B/API 605 Class 150 WN ASME B16.47 Series B/API 605 Class 300 WN ASME B16.47 Series B/API 605 Class 600 WN ASME B16.47 Series B/API 605 Class 900 WN BS 3293 Clas...

The Welding neck flanges is normally referred to as the high hub flange. It is designed to transfer stresses to the pipe, thereby reducing high stress concentrations at the base of the flange. The welding neck flange is the best designed butt-welded flange of those currently available because of its inherent structural value. It is expensive because of the design.   Pipe Flange Neck Raised face Screws Weight of a flange (7,85 Kg/dm3) Rated Diameter d1 D b k h1 d3 s r h2 d4 f Number Thread d2 Kg ISO Series 1 DIN Series 2 15 - 20 95 16 65 38 30 2 4 6 45 2 4 M 12 14 0,746 21,3 - 32 20 - 25 105 18 75 40 38 2,3 4 6 58 2 4 M 12 14 1,06 26,9 - 40 25 - 30 115 18 85 40 42 2,6 4 6 68 2 4 M 12 14 1,29 33,7 - 45 32 - 38 140 18 100 42 52 2,6 6 6 78 2 4 M 16 18 1,88 42,4 - 56 40 - 44,5 150 18 110 45 60 2,6 6 7 88 3 4 M 16 18 2,33 48,3 - 64 50 - 57 165 20 125 48 72 2,9 6 8 102 3 4 M 16 18 2,82 60,3 - 75 65 76,1 - 185 22 145 52 90 2,9 6 10 122 3 8 M 16 18 3,74 80 88,9 - 2...

The Welding neck flanges is normally referred to as the high hub flange. It is designed to transfer stresses to the pipe, thereby reducing high stress concentrations at the base of the flange. The welding neck flange is the best designed butt-welded flange of those currently available because of its inherent structural value. It is expensive because of the design.   Pipe Flange Neck Raised face Screws Weight of a flange (7,85 Kg/dm3) Rated Diameter d1 D b k h1 d3 s r h2 d4 f Number Thread d2 Kg ISO Series 1 DIN Series 2 15 - 20 95 14 65 35 30 2 4 6 45 2 4 M 12 14 0,648 21,3 - 32 20 - 25 105 16 75 38 38 2,3 4 6 58 2 4 M 12 14 0,952 26,9 - 40 25 - 30 115 16 85 38 42 2,6 4 6 68 2 4 M 12 14 1,14 33,7 - 45 32 - 38 140 16 100 40 52 2,6 6 6 78 2 4 M 16 18 1,69 42,4 - 56 40 - 44,5 150 16 110 42 60 2,6 6 7 88 3 4 M 16 18 1,86 48,3 - 64 50 - 57 165 18 125 45 72 2,9 6 8 102 3 4 M 16 18 2,53 60,3 - 75 65 76,1 - 185 18 145 45 90 2,9 6 10 122 3 4 M 16 18 3,06 80 88,9 - 2...