Shandong Zhongnuo Heavy Industry Co.,Ltd is a professional manufacturer of carbon steel flanges and pipe fittings in Zhangqiu , Shandong, China. We have specialized in producing flanges for over 16 years, our factory covers an area of 20000 square meters and our monthly capacity is 1500 tons. We supply all kinds of flanges, such as EN1092-1, DIN, BS ,UNI, SABS1123, ANSI, GOST ,AS2129, JIS Flange, sizes from DN15 to DN2000, Pressure PN6-PN100, and we can also manufacture flanges according to customer's specifications.