تولید کننده و تامین کننده فلنج های فرفورژه گردن جوش چین |DHDZ
Weld Neck Flanges Manufacturer In China Welding Neck Flanges Manufacturer in Shanxi and Shanghai, China 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 unsui...