
- API-5CT Seamless 16"& 18-5/8"&20"Casing Pipe&OCTG Oilfield Services
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- API-5ct Petroleum Oil Tubing Pipe (J55/ K55/ N80/ L80/ P110/ C95)
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- API 1.315"--20" Casing Tubing Coupling for Oilfield Service
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