CB312-1977 brass pressure gauge valve; CB / T3778-99 sounding self-closing valve; CB * 821-84 low-pressure pipe nipple; CB * 822-84 high pressure pipe nipple; CB / T3572-94 separator; CB * 56-83 pipe thread flat shoulder joints; CB53-80 threaded joints welded seat; CB / T23-99 marine drain plug; CB254-97 bottom drain plug; CB / T601-92 self-closing drain valve; CB / T465-1995 Marine flange cast iron gate;; CB313-76 external thread test valve CB907-94 Threaded bronze rectangular liquid valve; CB / T624-1995 sea water valve; CB3022-94 signal externally threaded air valve A type, R type; marine valve standard CB / T601-1992 self-closing discharge valve; marine valve standard CB / T3656-1994 air valve; CB * 3251-85 Y-type air filter; CB * 3124-82 threaded bronze gate; CB * 53-2008 nipple welded seat; CB * 53-80 threaded joint welding seat; CB / T23-99 marine drain plug; CB / T254-97 bottom drain plug; CB304-1992 cast iron flange valve; CB / T309-1999 threaded bronze globe valves; GB2028-80 stainless steel drain plug; GB3009-82 marine corrosion plug; GB / T595-1983 Marine bronze male thread globe valves; GB / T587 -93 bronze straight shut-off valve; CB / T466-1995 marine steel gate; CB / T467-95 marine bronze gate; GB / T2032-93 marine hydrant; GB / T2032-1993 Marine flange hydrant; GB / T599-1996 Marine Threaded bronze vent plug; GB / T597-1983 Marine bronze external threaded valve; GB / T589-1993 Marine bronze flanged valve; marine hydraulic double eccentric butterfly; CB / T309-1999 within Marine thread bronze cut-off valve; pneumatic valve double eccentric Marine; GB / T1951-1984 Marine low pressure cut-off valve threaded bronze; GB / T595-1983 Marine bronze male thread stop valve; GB / T591-93 cast iron rectangular cutoff valve; GB / T585- 1999 Marine cast off valve; GB / T588-1993 marine bronze stop check valves; GB / T584-1999 steel straight shut-off valve; GB / T590-93 iron straight shut-off valve; GB / T592-1993 Marine flange cast iron valve; CB / T3477-1992 Marine closable vertical breakwater valve; CB / T692-1992 Marine breathing valve; GB / T1850-1984 Marine male threaded weight quick - closing valve; CB / T3841-1999 flank boiler relief valve; CB / T3778-1999 sounding self-closing valve; GB / T3478-1992 Marine flange suction valve; CB / T422-1994 stream viewer; CB / T425-1994 low-pressure crude oil filter; GB / T465-1995 Marine flange cast iron gate; GB / T5744-1993 Marine quick closing valve; GB / T1854-1993 Marine flanged cast iron single arrangement suction stop box valve; CB / T3477-92 marine breakwater valve; GB / T2030- 1980 Marine bronze sea suction valve; GB / T2029-1980 Marine steel suction sea valves; GB / T3037-1994 Marine double eccentric butterfly GB / T3036-1994 Marine wafer butterfly valve; marine thread butterfly; marine worm double eccentric butterfly valve; CB / T601-1992 self-closing discharge valves; GB / T2030-1980 bronze sea suction valve; GB / T597-1983 Marine bronze external threaded valve; CB / T3591-1994 valve flange tanker; GB / T587-93 AS type, BS type marine bronze globe valve flange; GB / T2029-1980 Marine steel sea suction valve; CB3022-94 signal externally threaded air valve A type, R type; GB / T590-93 Marine flange cast iron globe valve ; GB / T593-1993 flange cast iron filler plug; GB / T593-1993 Marine flange bronze filler cock AQ Type A TQ, LQ type L, T type. . . A type of lap welding intermediate flat shoulder nipple, B-lap welding screwed nipple, C-lap welding manifold flat shoulder nipple, D-lap welding coat flat shoulder nipple, E-type lap welding Reducing coat flat shoulder nipple