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| - GOST full welded ball valveOct 03, 2012 full welded ball valve ,approved by CE,ISO9001:2008,GOST,used for heating,heating Size DN15-DN800 Full welded ball valve as a new type of ball valve is widely used in urban central heating, district heating, natural gas transmission and distribution and other areas.???It has the following advantages:simple structure, small size, light weight.
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