5-years golden supplier,PN16-PN40,Due to the body construction,flanged welded ball valve for gas is light and easy to install details of Fully welded ball valve are as follows ;NameFlanged ball valve for gas and hot water usageSizeDN15-DN800MaterialBody,Carbon Steel,Ball,stainless steelColourBlue and yellowUsageDistrict heating,water transport,gas transmissionPNPN 16- PN 40ConnectionFlange, ...