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API 114 mm Drilling Rod Mining Drilling Water Well DTH Drill Pipe
2025-04-13
introduction 2530
114
DIN, API
as Request
Oil Mining, Coal Mining, Well Drilling, Ore Mining
High Manganese Steel
Soft-Hard Formation
Nitriding ,Friction Welding,Pier Rough
QIDELI, LEILI
as Request
iso9001
China
8431431000
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