Our liners can be used in various drilling operation conditions. Double metal liner coat used in forging steel production, inner sleeve is made of the centrifugal casting high chromium materials. High hardness, wear resistance and long service life. Chromium-plate liners have good corrosion resistance, wear resistance and long service life. High frequency quenching single metal liner widely used in duplex pump drillings. Ceramic liners property is good and have long service life, widely used in high press, high chemical and marine drillings. Our liners are of good quality, high accuracy, fully complying with API SPEC 7K standard. |
Our extension rod is forged of quality alloy steel, and made via thermal refining, high frequency and chroming. Our pony rods have high mechanical strength, shock resistance, wear resistance and corrosion resistance.
