ICS91.080.10P26胃h三中华人民共和国建筑工业行业标准JG/T380—2012建筑结构用冷弯薄壁型钢Cold-formedthin-wallsteelsectionsforbuildings...
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ICS93.040P28GB中华人民共和国国家标准GB/T31438—2015混凝土灌注桩用钢薄壁声测管Steelthin-walledsonic-testingtubesforconcreteboredpil...
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ICS93.040P28中华人民共和国国家标准GB/T31438—2015混凝土灌注桩用钢薄壁声测管Steelthin-walledsonic-testingtubesforconcreteboredpiles...
