Carriage bolts are divided into large semicircular head carriage bolts (corresponding to standard GB / T14 and DIN693) and small semicircular head carriage bolts (corresponding to standard GB / T12...
The repairing gecko extends into the tube sheet hole, and the end of the tube rolls to expand the inner wall of the tube, causing plastic deformation, increasing the diameter of the tube, and the t...
The production process of the tooth bar is the simplest, wire drawing, blanking, chamfering, typing, heat treatment, thread rolling, surface treatment
If you have the strength, please refer to...
That is teeth, also known as screw. It is the name of the Han nationality furniture parts in the Ming and Qing Dynasties. The corresponding standard is not found in the national standard, correspon...