Dandong gaoxin dryer manufacturing co., ltd. Is specializing in dryer cylinder for more than 30 years and has become the largest professional private enterprise in manufacturing cast iron dryer in china. The products with excellent quality and competitive price to get the praise from chinese and foreign customers . The national patent of double-layer and r manufacturing process through the development. We have made the best quality products for many large paper mills in the world. High-pressure cylinder is also used in food, starch, pharmaceutical manufacturing and other industries. Our company can produce calendar roll and pressure roll. The largest diameter of calendar roll is 1000mm. The face length is up to 10, 000mm. The hardness can reach more than hs70. The largest diameter of pressure roll is 1500mm. The face length is up to 10, 000mm. The largest line pressure is 300kg/cm. The resin sand casting is one of our characteristic products. The cylinder covers are all resin sand casting, the casting material is gray iron ht200-300 and graphite cast iron qt400-600. Wooden packaging