The Products, serrated metal gasket, serrated metal gaskets of Hengseng are fast gaining recognition from both domestic and foreign industrial spots. They are being manufactured under the basis of alert and cautious Quality guaranty system, which is realized on all the processes. The spirit of craftsmanship which intends to continuously improve and develop new technologies to ensure the production of new and superior goods, and never being satisfied with what has already been developed is the mark of the Hengli man. A company serving consumers through the development of quality products, serrated metal gasket, serrated metal gaskets. We promise you, with all sincerity, that we will continue devoting our best efforts in manufacturing high quality goods. ASME B16.20