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Tube de forage géologique API 5DP
After years of efforts, Beilai has became the a international brand for geological drilling seamless tubes.The main products are developed from steel grade DZ60(45MnMoB) tpo steel grade ZT850 AND ZT950 wire line core drilling pipes(drill pipe, outer pipe and joint). The drilling depth range from 1000m-2000m-4000m-5000m etc
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