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Semua jenis bit pengeboran, disesuaikan berbagai bit scraper, bit ekspansi, kelompok bit poser, dll.
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Pelajari lebih lanjut bit pengeboran, sesuaikan semua jenis bit pengeboran, dan daur ulang bit pengeboran limbah.
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Pengeboran minyak; 12 1 / 4 "bagian sumur telah selesai, dan bit PDC yang baru diproduksi, g b f penuh, hampir tidak ada keausan dengan mata telanjang. # Pengeboran Sumur
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Kata kunci pengeboran minyak bumi; Casing Windowing; Modul; Mill Head / Bit - Made in China, M b d f in Chinese b.
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