Chengdu New Grace Casing Co.,Ltd. Return To The Products Section Plastic Tubes I. Plastic Tubes For Hog Casings --- Red tubes with white inserts, at 37cm long. 32 cm tubes are also available upon request. Other colors in green, blue, yellow etc are also available upon request. II. Plastic Tubes For Sheep Casings --- Red tubes with white inserts at 32 cm long.37 cm tubes are also available upon request. Other colors in green, blue, yellow etc are also available. Other putup & lengths are also available upon request. NOTE: Hard tubes are also available upon special request. If you have any questions or would like to learn more about New Grace and its products, feel free to Contact Us.