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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 CNIS GB/T 341-89 Steel wire--Classification and vocabular CNIS GB/T 11253-89 Cold-rolled plain carbon and low alloy structural steel sheets and strips CNIS GB/T 912-89 Hot-rolled plain carbon and low alloy structural steel sheets and strips CNIS GB/T 11263-89 Dimensions,shape,weight and tolerances for hot-rolled H-section steel CNIS GB/T 2101-89 General requirements of acceptance,packaging,marking,and certification for sect... CNIS GB/T 715-89 Hot-rolled round carbon steel bars for standard parts CNIS GB/T 10561-89 Steel--Determination of content of non-metallic inclusion--Micrographic method ...