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API 7-1 Oilfield Non-Magnetic Drill Collar 4 3/4'' Forged Drilling Collars P530/P550 Nmdc Slick/Square/ Spiral Well Drilling

2025-04-13 2130
1 Year
Forging
Polishing
Atmospheric Pressure
P550
API
East heavy
Iron Frame Packaging
According to the custom
Henan China
8431431000
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