Flange in the oil and industry above the application is very common, we can see the use of butt welding flange in various categories of industry. However, the use of welding flange is the need to have a lot of attention, these attention is the need to pay attention to. what are the fundamental co

Flange is a part that connects between shaft and shaft. It is mainly used for the connection between pipe ends. Therefore, it is still used a lot in daily machinery and equipment, but because of the different graphics of each pipe end, Therefore, when selecting single-head bolts, there must be a cer