| 1. | Welding transformers for portable spot welding machines 便携式点焊机用焊接变压器 |
| 2. | Safety requirements for portable arc welding transformers 小型弧焊变压器安全要求 |
| 3. | Safety requirements for the portable arc welding transformer 小型弧焊变压器安全要求 |
| 4. | Arc welding transformer hazard reducing device 弧焊变压器防触电装置 |
| 5. | Resistance welding transformers ; suspension type , dimensions , characteristics 电阻焊变压器吊挂式.尺寸特性 |
| 6. | Arc welding transformer 弧焊变压器 |
| 7. | Resistance welding transformers ; transformers with flanged joints ; dimensions , characteristics 电阻焊变压器法兰连接的变压器尺寸.特性 |
| 8. | Appliance coupling for the primary connection of resistance welding transformers , 200 a 550 v 200a . 550v电阻焊接变压器初级线圈连接装置耦合器 |