1）UL / FM / CE approval .             
2）Standard grooved specifications: according to VICTAULIC.                
3）Material: Ductile Iron conforming to ASTM A536, Grade 65--45--12 .           
4）Thread : BSPT & BSP & NPT  .        
5）Surface Treatment：Epoxy-RAL3000 & Painted-RAL 3000 & Painting-ORANGE .   
6）Gasket: EPDM .                        
7）Bolts and Nuts: ISO 898-1class 8.8   
8）Paking:In carton with pallet or wooden box.