The Weld Neck Flange 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.
These are mainly used on heat coupling of pipes when there is possibility of expansion of the section while bending stress on the coupling.
| Class | Size | Class | Size |
|---|---|---|---|
| 150 | 1/2" to 60" | 900 | 1/2" to 48" |
| 300 | 1/2" to 60" | 1500 | 1/2" to 36" |
| 600 | 1/2" to 48" | 2250 | 1/2" to 36" |
Above 600 class can also be forged according to your requirements. + ANSI B16.5/ ASME B16.47 Series A (MSS SP44) & Series B (API 605) + Material - ASTM A105, LF2 In addition Kisaan Steels provides: + 100% machined surface as per B16.5 + 100% traceability and material test reports.
Dimension Standards :
ANSI B 16.5, B 16.1, B 16.47 Series 'A' and 'B', MSS SP-44, JIS SK, 10K, 16K, DIN, BS 4504 or any other as per customer's requirements.
Material Grades :
ASTM A-105, ASTM A-350 LF-2, A182 F-304/F-304H/F-304L/ F-316L/ F-321/ F-347/F-316Ti, A 181 F-1/F-5/F-11/F-22, ASTM A182 F-5/F-9/F-11/F-22, AISI 304/410/420/3042 or any other IS, DIN, JIS or international standards in Carbon/ Alloy/ Stainless Steel.