How long can a long black screws be? How does this work?

Speaking of screws, we must think of a small one, even let you think about long black screws, will feel only tens of centimeters, not long, but the fact that long screws can be done nearly 2 meters, higher than you, is not very surprised?

Now, are you wondering how such long black screws are actually made? First of all, weigh the raw material and put it into the machine to cut the material, and cut out the appropriate size of wire according to the required length; Then put the cut line into the mold closing machine head; After the head is finished, put in the rubbing machine to rub the teeth; After that, the screw with good thread shall be inspected for the connecting gauge, and then the surface treatment shall be done. After the surface treatment, the screw shall be checked for any defects. If there is no problem after the inspection, the long screw will be ready for shipment after production.

Shi Shi Tong screw manufacturer adopts long black screws produced by die closing machine, one cold heading forming. Screw fasteners, no matter how long, can be molded in one time, no welding more durable. The strength grade of the screw can be 4.8-8.8, and the surface is bright without burrs, ensuring that it can meet the needs of users.