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CNIS GB/T 11261-89 Methods for chemical analysis of high carbon chromium bearing steel--The pulse ... CNIS GB/T 2508-89 Marine combination pipe flanges,slip-on steel outer flanges,fillet weld-on stee... CNIS GB/T 11182-89 Steel wire for hose reinforcement CNIS GB/T 223.28-89 Methods for chemical analysis of iron,steel and alloy--The -benzoinoxime gravim... CNIS GB/T 3279-89 Hot-rolled spring steel sheets CNIS GB/T 2506-89 Marine steel pipe flanges, fillel weld-on CNIS GB/T 223.26-89 Methods for chemical analysis of iron,steel and alloy--The thiocyanate direct p... CNIS GB/T 10746-89 Marine steel pipe flanges, butt weld-on CNIS GB/T 3273-89 Hot-rolled steel plates and sheets for automobile frames CNIS GB/T 223.13-89 Methods for chemical analysis of iron,steel and alloy--The ammonium ferrous sul... CNIS GB/T 223.17-89 Methods for chemical analysis of iron,steel and alloy--The diantipyrylmethane p... CNIS GB/T 11170-89 Method for photoelectric emission spectroscopic analysis of stainless steel CNIS GB/T 223.66-89 Methods for chemical analysis of iron,steel and alloy--The thiocyanate-chlorpro... CNIS GB/T 223.9-89 Methods for chemical analysis of iron,steel and alloy--The chromazurol S photom... CNIS GB/T 11254-89 Hot rolled steel sheets for compressor valves CNIS GB/T 11251-89 Hot-rolled alloy structural steel plates CNIS GB/T 10750-89 Marine oval-shaped cast iron and cast steel pipe flanges CNIS GB/T 223.19-89 Methods for chemical analysis of iron,steel and alloy--The neocuproine-chlorofo... CNIS GB/T 223.14-89 Methods for chemical analysis of iron,steel and alloy--The N-benzoyl-N-phenylhy... CNIS GB/T 2504-89 Marine cast steel pipe flanges CNIS GB/T 4357-89 Carbon spring steel wires CNIS GB/T 223.67-89 Methods for chemical analysis of iron,steel and alloy--The reducing distillatio... CNIS GB/T 223.37-89 Methods for chemical analysis of iron,steel and alloy--The indophenol blue phot... CNIS GB/T 10751-89 Marine oval-shaped steel pipe flanges,weld-on