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oil drill pipes , water well drill pipes, geological drill pipes , flat drill pipe, size:â,?®,50, â,?®,60, â,?®,73, â,?®,89, â,?®,114, â,?®,127 . grade: dz50, e-75, r780, g-105, s135.

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importing the used drill pipe, collars, bits, pdc bits, exporting new drill pipe, casing, steam coal, import cotton & diesel oil. m100, otherwise, we export new drill parts & other products.