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ITEM OF CONTRACT SPECIFICATIONS
PIPES IN VIBRATION COMPRESSED CONCRETE WITH OVAL SECTION, LENGTH 200 CM. WITH CUP-JOINT AND FLAT SUPPORT BASE, ALL DIMENSIONED ACCORDING TO STANDARD DIN 4032 SECTION EF-M AND COMPLETE WITH NEOPRENE O-RING DESIGNED TO GUARANTEE THE WATERPROOFING ACCORDING TO STANDARD DIN 19543.