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CJJ 13-1987 Water supply hydrogeological drilling and well sinking operation procedures
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This code is applicable to water supply hydrogeological drilling and well sinking projects. CJJ 13-1987 Water Supply Hydrogeologic
2025-03-14 category：Urban construction industry standards (CJ)+ View
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CJJ 12-1999 Installation and acceptance regulations for household gas burning appliances
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This regulation is formulated to ensure the safe operation of household gas combustion appliances and to protect the safety of nat
2025-03-14 category：Urban construction industry standards (CJ)+ View
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CJJ 11-1993 Urban Bridge Design Guidelines
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This standard is formulated to properly handle the problems related to bridge construction when designing roads and bridges in urb
2025-03-14 category：Urban construction industry standards (CJ)+ View
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CJJ 9-1985 Municipal Engineering Quality Inspection and Assessment Standard (Urban Flood Control Project)
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This standard applies to newly built, expanded and rebuilt municipal engineering projects under normal geological conditions. Muni
2025-04-25 category：Urban construction industry standards (CJ)+ View
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CJJ 7-1985 Specification for Urban Geophysical Exploration CJJ7-85
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CJJ 7-1985 Urban Geophysical Exploration Specification CJJ7-85 CJJ7-1985 Standard download decompression password: www.bzxz.net
2025-03-14 category：Urban construction industry standards (CJ)+ View
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CJJ 6-1985 Technical regulations for safety in the maintenance of drainage pipes CJJ6-85
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This regulation is applicable to: 1. Inspection of drainage pipes 2. Unblocking of drainage pipes 3. Maintenance of drainage pipes
2025-03-14 category：Urban construction industry standards (CJ)+ View
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CJJ 5-1983 Interim Technical Regulations for Cinder-Lime Road Base
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CJJ 5-1983 Interim Technical Regulations for Cinder-Lime Road Base CJJ5-1983 Standard download decompression password: www.bzxz.ne
2025-03-14 category：Urban construction industry standards (CJ)+ View
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CJJ 4-1983 Interim Technical Regulations for Construction of Fly Ash and Lime Road Base CJJ4-83
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CJJ 4-1983 Interim Technical Regulations for Fly Ash and Lime Road Base Construction CJJ4-83 CJJ4-1983 Standard download decompres
2025-03-14 category：Urban construction industry standards (CJ)+ View
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