Company launches new abrasion-resistant hoses & matching pontoons As per interview conducted with Engineering News on 14 February 2014 Rubber manufacturing specialist Transvaal Rubber Company (Truco) developed new high-abrasion-resistant rubber dredging hoses in January, to be used in mining operations, reports Truco MD John Tait. He says in one particular application, the hoses were made 9 m long, with a 600 mm internal diameter, incorporating specialised rings to substantially improve the abrasion-resistant character of the hose.