نمایش نتیجه 1 تا 2 از 2 نتیجه یافت شده برای crossover sub:
n: a casing sub containing a seal bore and a left-handed thread;it is run as a crossover sub between casing sizes and to provide a tubing anchor.
n: a sub that allows different sizes and types of drill pipe to be joined.
n: See adapter.
a short section of pipe with the proper threads cut into each end to join two pieces of pipe or equipment that do not have matching connections.
کاهنده
© ۱۳۹۲-۱۳۹۷ این اثر شامل قانون حمایت از مولفین بوده و هرگونه کپی برداری از آن ممنوع است.
