نمایش نتیجه 1 تا 2 از 2 نتیجه یافت شده برای tong dies:
n pi: very hard and brittle pieces of serrated steel that are installed in the tongs and that grip or bite into the tool joint of drill pipe when the tongs are latched onto the pipe.
n: The toothing hard and brittle bloom that have been thermal treated,which be fixed in the tong.
n: The scratch on the surface of drill string caused by tong dies.
© ۱۳۹۲-۱۳۹۷ این اثر شامل قانون حمایت از مولفین بوده و هرگونه کپی برداری از آن ممنوع است.
