GB/T 15558.1-2023 Chinese PDF (GB/T15558.1-2023) GB/T 45211.7-2025 English versions: GB/T 45259-2025

English versions: GB/T 45259-2025

1-2025_Chinese: Design specification for mechanical components in nuclear island of pressurized water reactor nuclear power plants - Part 1: General principle (Chinese: 压水堆核电厂核岛机械设备设计规范 第1部分：总则)

English versions: GB/T 15967-2024

English versions: GB/T 36287

GB/T 33296-2025_Chinese: Quality requirements and test methods for shale gas products (Chinese: 页岩气产品质量要求和试验方法)

GB/T 15558.1-2023 Chinese PDF (GB/T15558.1-2023) GB/T 45211.7-2025 English versions: GB/T 45259-2025GB T 15558. 1 2023_Chinese: Buried polyethylene(PE) piping systems for the supply of gaseous fuels Part 1: General (Chinese: PE 1) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 15558. 1 2023