... in cooling unit and equipment of central air conditioning, freezing water pipe ,condensing water pipe,air ducts ,hot-water pipe and so ... 50mm,and the inse diameter is from 6mm to 89mm.5.Delivery on time.The products are stock and the quantity ... be deliveried within 7 days after receiving 30% deposit.Showroom: 5/8" air conditioner closed cell Armaflex insulated pipe