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ISO 17641-2 2015 Destructive tests on welds in metallic materials — Hot cracking tests for weldments — Arc welding processes — Part 2 Self-restraint tests.pdf
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ISO 7539-5 1989 Corrosion of metals and alloys — Stress corrosion testing — Part 5 Preparation and use of C-ring specimens.pdf
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ISO 23555-1 2022 Gas pressure safety and control devices for use in gas transmission, distribution and installations for inlet pressures up to and including 10 MPa — Part 1 General requirements.pdf
ISO 9096 2017 Stationary source emissions Manual determination of mass concentration of particulate matter.pdf
ISO 787-5-1980General methods of test for pigments and extenders. Part 5_Determination of oil absorp.pdf
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GB-T 90.1-2002 紧固件 验收检查.pdf
GB-T 20946-2007 起重用短环链 验收总则.pdf
GB-T 19015-2021 质量管理 质量计划指南.pdf
GB-T 14454.1-2008 香料 试样制备.pdf
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GB-T 41994-2022 工业炉及相关工艺设备 电弧炉炼钢机械和设备的安全要求.pdf
GB-T 8489-2006 精细陶瓷压缩强度试验方法.pdf