... ,ISO9001,API,CE Material;GB,WCB Ball valve is the class-1 supplier of CNOOC,CNPC,CAO - Type:Forged steel floating ball ... valve - Processing: Long delivery pipes of natural gas- Method: Handle operation ,Worm gear operation,Pneumatic and ... /YearPayment TermsL/C,T/T "Class 900" wcb ball valve for the pipeline of water mediums