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and the use of cast irons (Chinese: 石油天然气工业 油气开采中用于含硫化氢环境的材料 第2部分：抗开裂碳钢、低合金钢和铸铁)
English versions: GB/T 20718
English versions: GB 17761-2024
GB/T 38055
7-2025_Chinese: Technical specification for animal genetic resource survey - Part 7: Camel and alpaca (Chinese: 畜禽遗传资源调查技术规范 第7部分：骆驼、羊驼)
GB/T 45131-2025 Chinese PDF (GB /T45131-2025) GB/T 33588.6-2025 and the use of castGB T 45131 2025_Chinese: Analysis of water used in boiler and cooling system Determination of phosphate, chloride, silicate, total alkalinity, phenolphthalein alkalinity, hardness and iron Spectrophotometric detection by discrete analysis systems (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 45131 2025
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