| Standard | ASTM A325-1,ASTM A325M-1 |
| Size | M12-M36,1/2"-1-1/2" |
| Grau | A325-1,A325M-1 |
| Concluir | Black,auto-color,H.D.G, YZP, Darcromet,galvanizada |
| Prima | 45#, 40CR, 35CrMo,42CrMo |