When the galvanized tube is manufactured by the pipe mill machine , the galvanized layer will fall on the welded seam of the steel gavalnized tube , so it needs to spray the zinc on the welded seam by the zinc spraying machine .it can prevent the weld seam from rust .
For the old steel tube manufacturer or experienced operator of pipe mill machine . it is very easy to select the corrected diameter zinc wire for their zinc spraying machine and pipe mill machine as per their experience.
But for the new steel tube manufacturer or operator with less experience of pipe mill machine . it is a little challeng to select the zinc wire to meet various diameter and thickness galvanized tube that manufactured by pipe mill machine .
SANSO machinery as a manufacturer of pipe mill machine in China , we would like provide a table for your reference
The zinc wire diameter is determinded by the tube mill machine's speed , galvanized tube thickness .Please check the follwoing table .
| Tube thickness( mm) | Tube mill speed ≤60m/min | Tube mill speed 60～100m/min | Tube mill speed 100～140m/min |
| 0.8～1.2 | Φ1.2 | Φ1.2～1.5 | Φ1.5 |
| 1.2～1.8 | Φ1.5 | Φ1.5 | Φ1.5～2.0 |
| 1.8～2.5 | Φ1.5～2.0 | Φ2.0 | Φ2.0 |
| 2.5～3.5 | Φ2.0 | Φ2.0～2.5 | Φ2.5 |
| 3.5～4.5 | Φ2.5 | Φ2.5 | Φ2.5～3.0 |
| ＞4.5 | Φ2.5～3.0 | Φ3.0 |
