GB/T 19913-2005 Cast iron heating radiator

GB/T 19913-2018 Cast iron heating radiator

GB/T 2828.1-2003 Sampling procedures for inspection by attributes—Part 1:Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection GB/T 2828.1-2012 Sampling procedures for inspection by attributes—Part 1:Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection GB/T 6414-1999 Castings—System of dimensional tolerances and machining allowances GB/T 6414-2017 Castings—Dimensional tolerances and geometrical tolerances and machining allowances GB/T 7307-2001 Pipe threads with 55 degree thread angle where pressure-tight joints are not made on the threads GB/T 9439-1988 Grey iron castings GB/T 9439-2010 Grey iron castings GB/T 9439-2023 Grey iron castings GB/T 11351-1989 Mass tolerances for castings GB/T 11351-2017 Mass tolerances of casting GB/T 13754-1992 Test method of thermal output of heat emittor GB/T 13754-2008 Test methods of thermal output of heating radiators GB/T 13754-2017 Test methods of thermal output of heating radiators JB/T 7945.1-2018 Mechanical Properties Test Method for Grey Iron - Part 1: Tensile Test Method JB/T 7945.2-2018 JB/T 7945.2-2018 - Grey iron mechanical properties testing method Part 2: Flexural test results JB/T 7945-1999 Methods for testing the mechanical properties of grey cast iron