hat
Slick Non mayetik sèvi ak machin salyè/Marine Non mayetik sèvi ak machin salyè/Flex mayetik kòl sèvi ak machin nan Non, yo se fonksyon kòm lojman pou zouti MWD yo, yo bay pi piti pou forage kòd.
eng
Slick Non magnetic Drill collar/Spiral Non magnetic Drill collar/Flex Non magnetic Drill collar, they are function as housing for the MWD tools and provide weight for drilling string.