GB/T 43232-2023 Chinese PDF (GB/T43232-2023) GB/T 44933-2024 GB/T 29021-2023_Chinese: Petroleum drilling and

GB/T 29021-2023_Chinese: Petroleum drilling and production equipment - Beam pumping unit (Chinese: 石油天然气钻采设备 游梁式抽油机)

GB/T 28572-2025_Chinese: Specification and technical parameters of inlet valves for large and medium-sized hydraulic turbines (Chinese: 大中型水轮机进水阀门规格及技术参数)

English versions: GB/T 45515-2025

2-2025_Chinese: Metallic materials - Vickers hardness test - Part 2: Verification and calibration of testing machines (Chinese: 金属材料 维氏硬度试验 第2部分：硬度计的检验与校准)

GB/T 43232-2023 Chinese PDF (GB/T43232-2023) GB/T 44933-2024 GB/T 29021-2023_Chinese: Petroleum drilling andGB T 43232 2023_Chinese: Fasteners Measurement method of axial stress by ultrasonic (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 43232 2023