This standard applies to rotating motors on electric locomotives or vehicles used for railway and road transport, as well as on ve

This standard specifies the types and sizes of O-type vacuum rubber seals. This standard applies to the seals of reciprocating vac

This standard specifies the type and size of JO type and skeleton type vacuum rubber seals. This standard is applicable to the sea

This standard specifies the types and sizes of J-type vacuum rubber seals. This standard is applicable to the seals of rotary vacu

This standard specifies the types and basic parameters of multistage clean water centrifugal pumps. This standard applies to pumps

This standard specifies the types and basic parameters of single-stage double-suction clean water centrifugal pumps. JB/T 1050-199

JB/T 1035-1994 Technical Specification for Copper Air Separation Equipment Manufacturing JB/T1035-1994 Standard download decompres

This standard specifies the manufacturing and inspection requirements for sieve plate distillation towers, straight tube condenser