Pipe pliers are a commonly used tool for repairing pipelines and are sold in any hardware store. So, how should pipe pliers be used? If you still don’t know how to use pliers, this article will provide you with detailed information and also tell you what to pay attention to when using pliers.
What is a pipe clamp?
Pipe pliers are a type of workpiece used to clamp and rotate steel pipes. It can be divided into various types according to carrying capacity, weight, style, etc., and is widely used for the installation of oil pipelines and civil pipelines.
The working principle of clamping the pipe is to convert the clamping force into torque, and the greater the force used in the twisting direction, the tighter the clamping. Use the taper of the jaws to increase torque, usually at 3-8 degrees, to grip the tubular object tightly. Automatically adapt to different pipe diameters, automatically adapt to the plastic deformation caused by the stress applied to the pipe by the clamp, and ensure torque and no slipping under the effect of reducing the pipe diameter.
Classification of Pipe Pliers
Pipe clamps are divided into two levels based on their load-bearing capacity: heavy level and ordinary level; Divided by weight into heavy-duty, heavy-duty, and light-duty; Divided by style into British, American, German, Spanish, skewed, chain, eagle beak double handle pipe pliers, etc; According to the material of the handle, it can be divided into aluminum alloy pipe pliers, cast steel pipe pliers, Magang pipe pliers, ductile iron pipe pliers, etc.
Precautions for using pipe pliers
(1) Choose appropriate specifications;
(2) The opening of the clamp head should be equal to the diameter of the workpiece;
(3) The clamp head should be tightened on the workpiece before forcefully pulling to prevent slipping and injury;
(4) When using a force rod, the length should be appropriate. When moving the handle, pay attention to the carrying torque and do not apply too much force to prevent overload damage;
(5) The pliers teeth and adjusting ring should be kept clean;
(6) Generally, pipe pliers cannot be used as hammer heads;
(7) Cannot hold workpieces with a temperature exceeding 300 ℃;
(8) The pipe clamp shall not have any wrinkles, burrs, or obvious defects such as oxide scale, sand holes, or air holes on the surface. The surface roughness Ra value of the machined surfaces on both sides of the jaw should not exceed 3.2 μ m, and the surface roughness Ra value of the machined surfaces in other parts should not exceed 12.5 μ m. The surface coating of the clamp handle body should be uniform, with consistent color and no obvious defects such as flow marks or delamination.
When using pipe clamps, be sure not to get them wet. If they get wet, dry them promptly after use to avoid rusting and prevent them from being unusable in the next use. On the other hand, when we stretch the jaws of the pipe clamp to the maximum, we must use our hands to operate the jaws of the pipe clamp normally in the direction of work, to avoid excessive work, loosening and locking of the jaws on one side. After use, we should restore them to their original state in a timely manner. Finally, regular maintenance and upkeep are also necessary