GB/T 22723-2024 Chinese PDF (GB/T22723-2024) GB/T 27647-2024 GB/T 45612-2025_Chinese: 1 100 MPa

GB/T 45612-2025_Chinese: 1 100 MPa spline-drive bolts with MJ threads for aerospace (Chinese: 航空航天用1100MPa MJ螺纹花键头螺栓)

English versions: GB/T 17529

English versions: GB/T 12604

English versions: GB/T 21200-2024

GB/T 12385-2025_Chinese: Standard test methods for sealability of gaskets for pipe flanges (Chinese: 管法兰用垫片密封性能试验方法)

GB/T 22723-2024 Chinese PDF (GB/T22723-2024) GB/T 27647-2024 GB/T 45612-2025_Chinese: 1 100 MPaGB T 22723 2024_Chinese: Natural gas Energy determination (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 22723 2024