Characteristics: 1. The tong head is the open structure which is
quick and convenient for entering and retreating working
position. The integral tong head has good hardness and rigidity;
2. The three-jaw-plate clamping device is adopted in the master
tong and back tongs. The device may ensure minimum string damage.
The front two jaw plates of the master tong are in the swing
structure and the back jaw plate is the roller-climbing
structure. The assembly and disassembly is very convenient. The
optimum tangent-diameter ratio design ensures reliable clamping
and easy slope retreating. The back tong is the three-jaw-plate
structure pushed by hydraulic cylinder. The structure is simple
and the clamping is reliable; 3. Four-gear rotation is adopted
for large speed regulation range. And the rated torque is large;
4. It has the braking mode with braking staple. The braking
torque is large. The operation is simple. And it is convenient
for repair and replacement; 5. With the open large gear
supporting structure, hardness and rigidity of open large gear is
enhanced considerably; 6. The shell is made of steel plate with
high hardness. The overall hardness is good. Various jaw plates
are made with fine casting and forging process. It has beautiful
appearance and high hardness; 7. Hydraulic torque indicator is
provided. And installation interface of turning torque instrument
is provided for computerized management.
Characteristics: 1. The tong head is the open structure which is
quick and convenient for entering and retreating working
position. The integral tong head has good hardness and rigidity;
2. The three-jaw-plate clamping device is adopted in the master
tong and back tongs. The device may ensure minimum string damage.
The front two jaw plates of the master tong are in the swing
structure and the back jaw plate is the roller-climbing
structure. The assembly and disassembly is very convenient. The
optimum tangent-diameter ratio design ensures reliable clamping
and easy slope retreating. The back tong is the three-jaw-plate
structure pushed by hydraulic cylinder. The structure is simple
and the clamping is reliable; 3. Four-gear rotation is adopted
for large speed regulation range. And the rated torque is large;
4. It has the braking mode with braking staple. The braking
torque is large. The operation is simple. And it is convenient
for repair and replacement; 5. With the open large gear
supporting structure, hardness and rigidity of open large gear is
enhanced considerably; 6. The shell is made of steel plate with
high hardness. The overall hardness is good. Various jaw plates
are made with fine casting and forging process. It has beautiful
appearance and high hardness; 7. Hydraulic torque indicator is
provided. And installation interface of turning torque instrument
is provided for computerized management.