Luhai Energy Co., Ltd
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Payment Terms: | T/T,L/C |
Place of Origin: | Beijing, China (Mainland) |
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Luhai non-magnetic drill collars are made from non-magnetic materials with low-magnetic permeability. API monogram, serial number, OD,ID, type and size of connections are stamped on recessed mill flats.
When MPS=1×105/4πA/m
Relative magnetic permeabilityμr≤1.1010
Magnetic Field Gradient△B≤0.05μT