GB/T 14235.4-1993 Testing method for linear contraction of pattern materials in investment casting

GB/T 14235.1-1993 Testing method for melting point of pattern materials in investment casting GB/T 14235.2-1993 Testing method for bending strength of pattern materials in investment casting GB/T 14235.3-1993 Testing method for ash content of pattern materials in investment casting GB/T 14235.5-1993 Testing method for surface hardness of pattern materials in investment casting GB/T 14235.6-1993 Testing method for acid number of pattern materials in investment casting GB/T 14235.7-1993 Testing method for fluidity of pattern materials in investment casting GB/T 14235.8-1993 Testing method for viscosity of pattern materials in investment casting GB/T 14235.9-1993 Testing method for thermal stability of pattern materials in investment casting

GB/T 14235.1-2018 Low temperature pattern wax material for investment casting—Part 1:Testing methods for physical properties

GB/T 1800.1-1997 Limits and fits—Bases—Part 1:Terminology GB/T 1800.1-2009 Geometrical Product Specifications (GPS)—Limits and fits—Part 1:Bases of tolerances,deviations and fits GB/T 1800.1-2020 Geometrical product specifications (GPS)—ISO code system for tolerances on linear sizes—Part 1:Basis of tolerances, deviations and fits GB/T 1800.2-1998 Limits and fits—Bases—Part 2:Basic rules of tolerances, deviations and fits GB/T 1800.2-2009 Geometrical Product Specifications (GPS)—Limits and fits—Part 2:Tables of standard tolerance grades and limit deviations for holes and shafts GB/T 1800.2-2020 Geometrical product specifications(GPS)—ISO code system for tolerances on linear sizes—Part 2:Tables of standard tolerance classes and limit deviations for holes and shafts GB/T 1800.3-1998 Limits and fits—Bases—Part 3:Numerical values tables of standard tolerances and fundamental deviations GB/T 1800.4-1999 Limits and fits Tables of standard tolerance grades and limit deviations for holes and shafts GB/T 1801-1999 Limits and fits—Selection of tolerance zones and fits GB/T 1801-2009 Geometrical Product Specifications (GPS)—Limits and fits—Selection of tolerance zones and fits GB 1800~1804 GB/T 1803-2003 Limits and fits Tolerance zones for holes and shafts size up to 18mm GB/T 1804-2000 General tolerances for linear and angular dimensions without individual tolerance indications