GB/T 1033.1 Plastics.Methods for determining density of non-celluar plastics.Part1:Immersion method,liquid pyknometer method and titration method
GB/T 1040.1 Plastics—Determination of tensile properties—Part 1:General principles*, 2018-12-28 Update
GB/T 1040.2 Plastics—Determination of tensile properties—Part 2: Test conditions for moulding and extrusion plastics*, 2022-07-11 Update
GB/T 14152 Thermoplastics pipes-Determination of resistance to external blows-Round-the-clock method
GB/T 17037.1 Plastics—Injection moulding of test specimens of thermoplastic materials—Part 1:General principles,and moulding of multipurpose and bar test specimens*, 2019-05-10 Update
GB/T 19472.2 Polyethylene structure-wall piping systems for underground usage—Part2: Polyethylene spirally enwound structure-wall pipes*, 2017-12-29 Update
GB/T 3682 Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics
GB/T 9341 Plastic.Determination of flexural properties