EN-4261
| Reference | Edition | Title / Details |
| ASD-STAN prEN 4559 | Pipe couplings 37°, spherical, in heat resisting steel — Tees, welded — Inch series |
Pipe couplings 37°, spherical, in heat resisting steel — Tees, welded — Inch series |
| ASD-STAN prEN 4558 | Pipe coupling, welded, up to 21 00 kPa — Technical specification — Inch series |
Pipe coupling, welded, up to 21 00 kPa — Technical specification — Inch series |
