Our company consults U.S.A. W-K-M Company, Japan JSW advanced technology, it is suitable for the angry sewage disposal of the oil field , petrochemical industry , natural gas liquid to specialize in dull and stereotyped floodgate valve , AIP6D , ANSI , JIS , BS , GB standard, main line collect , fail putting empty angry to stand, blowdown systematic characteristic develop to domestic natural gas. The valve seat is ..