NF F37-026:1968 RAILWAY TRANSPORT EQUIPMENT. TANK WAGONS NITRIC ACID (CONCENTRATION IN EXCESS OF 95 %) TYPE. TWO-SIDED GRAVITY DISCHARGE (50 MM AND 80 MM DIAMETER).
2003NF F37-100-2:2003 Railway applications - Tank wagons - Part 2 : bottom emptying devices for liquid products including vapour return.
1968NF F37-026:1968 RAILWAY TRANSPORT EQUIPMENT. TANK WAGONS NITRIC ACID (CONCENTRATION IN EXCESS OF 95 %) TYPE. TWO-SIDED GRAVITY DISCHARGE (50 MM AND 80 MM DIAMETER).