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BS 4508-4:1977
M00001230
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BS 4508-4:1977 Thermally insulated underground pipelines. Specific testing and inspection requirements for cased systems without air gap
standard by BSI Group, 06/30/1977
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Testing, inspection and certification of pipe-in-pipe distribution systems with an insulated service or product pipe enclosed in a pressure-tight casing.Cross References:
BS 692
BS 874
BS 2782
BS 2972
BS 4370
BS 4508:Part 3
BS 4660
CP 2001
CP 3009
ISO/R 846