Weld-Neck flanges or welding-neck flanges can be differentiated from all other types of flange by their long tapered hub. The Welding neck flanges is normally referred to as the high hub flange. It is designed to transfer stresses to the pipe, thereby reducing high stress concentrations at the base of the flange. A weld neck flange (also known as a high-hub flange and tapered hub flange) is a type of flange. There are two designs. The regular type is used with pipes. The long type is unsuitable for pipes and is used in process plant. A weld neck flange consists of a circular fitting with a protruding rim around the circumference. Generally machined from a forging, these flanges are typically butt welded to a pipe. The rim has a series of drilled holes that permit the flange to be affixed to another flange with bolts. Welding Neck Flange,Welding Flanges,Butt Weld Fittings,ASME B16.5 Weld Neck Flanges Shandong Zhongnuo Heavy Industry Co.,Ltd. , https://www.zhongnuoflange.com
Bearing steel: Domestic demand growth rate exceeds 10% during the "12th Five-Year Plan" period
During the "12th Five-Year Plan" period, domestic demand increased by more than 10%, and in 2011 it is expected to be around 3.5 million tons. In the future, the focus will be on the three major areas of wind power bearing steels, high-speed iron bearing steels, and large aircraft bearing steels. The domestic industry is highly concentrated. Baote, Dongte, CITIC Pacific, Xigang Group and Zhengzhou Yongtong account for more than 80% of the domestic market share.