... Tube is nitrile, black and smooth, ARPM Class A. Cover is CR, blue, corrugated, ARPM Class B. Reinforcement ... including gasoline under pressure or gravity flow. FEATURES: Cover is resistant to weathering, abrasion, and the exposure to ... with them? Yes, we have been cooperating with a big multinational company more than 15 years. We ... the order, but for coupling, it will be a little long ,about 45 days. 7.The how ...