1. Medium-density fiberboard cutting material 2. Medium-density fiberboard surface molding, made into various flower patterns or no flower pattern 2. Wood grinding, smoothing with sandpaper, brushing bottom 4, grinding 5, spraying primer Sixth, into the baking room seven, polished eight, spray paint nine, into the baking room ten, polished eleven, spray topcoat, illuminate twelve, enter the grilled thirteen, hit the water mill fourteen, imported wax for polishing finished products completed . 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.zhongnuoflanges.com