51 Steel Pipeline News: The “Code for the Operation of Water Supply Hydrogeological Drilling and Tube-well Construction†is now approved as an industry standard, numbered CJJ/T13-2013, and will be implemented from December 1, 2013. The original “Regulations for the Operation of Water Supply Hydrogeology Drilling and Sinkingâ€, CJJ 13-87, was abolished at the same time.
This regulation is published by China Construction Industry Press, the Institute of Standards and Quotas of the Ministry of Commerce.
Housing and Urban-Rural Development Department
May 13, 2013
This regulation is published by China Construction Industry Press, the Institute of Standards and Quotas of the Ministry of Commerce.
Housing and Urban-Rural Development Department
May 13, 2013
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