GB/T 42918.2-2023 Chinese PDF (GB/T42918.2-2023) GB 31661-2025 grinding and finishing equipment for

grinding and finishing equipment for casting cleaning - Safety technical specifications (Chinese: 铸造机械 铸件清理用切割、磨削和精整设备 安全技术规范)

2-2024_Chinese: Non-destructive testing - Penetrant testing - Part 2: Testing of penetrang materials (Chinese: 无损检测 渗透检测 第2部分：渗透材料的检验)

English versions: GB/T 31771-2024

GB/T 32076

English versions: GB/T 45124-2024

GB/T 42918.2-2023 Chinese PDF (GB/T42918.2-2023) GB 31661-2025 grinding and finishing equipment forGB T 42918. 2 2023_Chinese: Plastics Thermoplastic polyurethanes for moulding and extrusion Part 2: Preparation of test specimens and determination of properties (Chinese: 2) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 42918. 2 2023