BS 4346-1-1969 Joints and fittings for use with unplasticized PVC pressure pipes part 1 Injection mo
标准简介
BS 4346-1-1969 Joints and fittings for use with unplasticized PVC pressure pipes part 1 Injection moulded unplasticized PVC fittings for solvent welding for use with presure pipe
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