Abstract
The results of testing sets of samples of a nipple coupling with a threaded connection NC–50 (4 ½ IF) of API 7 standard of pipes made of X 3 MnCrNiMoN 20 13 steel with a wear-resistant mineral coating and without coating are presented. A set of samples of a nipple-coupling pipe made of X 3 MnCrNiMoN 20 13 steel with a wear-resistant mineral coating successfully withstood the planned number of screwing and unscrewing cycles (400 cycles), which is more than an order of magnitude more than a set of samples of this steel without mineral coating (30 cycles). The predicted number of cycles of screwing and unscrewing this pair is not less than 1000.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Proccedings of International Scientific Conference "BALTTRIB 2019"
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
