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Description
Stainless steel flange, pipe outside diameter 139.7 mm, nominal pressure PN6, hole count 8, steel grade 1.4401 / 316 / 1.4404 / 316L. Theoretical weight per piece: 4.7 kg. Flanges are used wherever a detachable connection of pipeline components is required — with valves, butterfly valves, pumps, filters and other fittings. Compliant with the EN 1092-1 / DIN standard family. The weld neck flange has an extended hub butt-welded to the pipe, providing a smooth diameter transition and the highest pressure rating — used for demanding service and critical installations.
Grade 1.4404 / 316L is an austenitic stainless steel with enhanced corrosion resistance, particularly in more chemically aggressive environments. Thanks to its molybdenum content, this grade offers better corrosion resistance than steel 1.4301 / 304. The material is used in the chemical, food, marine, pharmaceutical industries and in installations and equipment exposed to moisture, chlorides and other corrosive agents.
Technical data
| Tube outside diameter | DN125 / 139.70 mm |
| Number of holes | 8 |
| Nominal pressure PN | PN6 |
| Steel grade | 1.4404 |
| Norm | EN1092-1/11B1 |
| 3.1 certificate available | Yes |
| Weight | 4.7 kg |
| Product code | S-KNSZ/139.70/1.4404/PN6 |
