Floating Ball Valve is a valve that the ball is driven by the stem and rotated around the axis of the stem. It is mainly used to cut off or connect the medium in pipeline, and can also be used for fluid adjustment and control.
There are different grade for hex bolts, such as 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, etc. Among them, the hexagonal bolts of grade 8.8 and above are made of low-carbon alloy steel or medium-carbon steel. It reaches different grade after heat treatme