Intergral blade stabilizer:
Shenlong’s integral blade stabilizers are manufactured from single bar of AISI 4145H modified steel.Professional forging process guarantee that mechanical properties meet API Spec 7-1.Hardness range of 285-341HB and a charpy “v”notch impact value of 54joules are guaranteed one inch below the surface.Shenlong employs inserted button as hard facing.
On enquiries and orders,please specify:
Near bit or string;
Hole size;
Fishing neck OD and length:
Bore;
Overall length;
Blade length
Hexagonal,square Kelly:
We offer square and hexagonal Kellys.Kellys are available up to 14m long.Our Kellys are made from AISI 4145H modified alloy bars that are quenched and tempered full length.A hardness range of 285to 341 BHN and a minimum impact value of 54Joules as per ASTM A 370 Chirpy are maintained one inch bellow the surface at room temperature.All ends and center drive sections-trepanned to provide true bores.To improve resistance to galling,all connections are phosphatized and coated with an API thread compound.Each bar or tube used to manufacture kellys have been examed with magnetic particle inspections and ultrasonic inspections.Strict inspections are through the whole process of producing to ensure high quality kellys.