NM400 NM450 NM500 Acciaio in acciaio Acciaio resistente all'usura
Servizio:
| SERVICE | DESCRIPTION |
| Taglio | 1. Può essere tagliato dal plasma, laser, getto d'acqua, Arc Gouge, e taglio abrasivo della sega; 2. Non può essere tagliato dal combustibile di ossia. |
| Saldatura |
1. Utilizzo 480 MPa (70 ksi) O 560 MPa (80 ksi) consumable to join base metal; 2. Dopo la saldatura, joint should be capped by overlay for wear protection. |
| Lavorazione |
1. Not machinable by conventional methods; 2. Can be finished by grinding only; 3. Countersunk holes can be precisely produced by EDM (Lavorazione ad elettroerosione). |
| Formazione |
1. Commonly formed with overlay to the inside; 2. For pipes with diameters smaller than 0.6m (24″), hardfacing pipe recommended instead of pipes fabricated from hardfacing plate. |
| Perforazione |
1. When drilling, the distance between two holes should be at least 15mm (5/8”); otherwise, the partition may not be strong enough and can crack; 2. The minimum diameter of holes should be equal to the thickness of the plates. For thicker plates with a total thickness over 20mm (3/4”), the minimum diameter should be 1.5 times the thickness of the plate. |
