... oil proof. 3.product characteristics:a) good heat preserving;b) easy taking-off, easy installing, easy to wash pipeline ... endurance;d) high intensity, pliable and easy for package;e) make as customers’ request, manufacture non-standard product;f ... widely used in various pipeline, warm-ventilation air-conditioning equip of petroleum, chemical, filature, metallurgy, electricity, construction, kiln stove ...