Home | Sign In | Join Free | Instant Messenger | Help

Page Views: 53 Date Added: 05/21/2008 Last Updated: 05/21/2008 Expiry Date: 05/19/2018 Description: Drill collar: Our drill collars are manufactured from 4145H modified steel.Drill collars are bored and drifted to API Spec7-1 and fully heated to meet or exceed the mechanical property requirements of API Spec7.Hardness range of 285-341HB and a charpy V notch impact value of 54joules are guaranteed one inch below the surface. On enquiries and orders ,please specify: Slick or spiral; Drill collar OD; Drill collar bore: Length of drill collar; Connection type; Stress-relief grooves: Stress-relief grooves decease the frequence of fatigue failures by improving the bending strength of pin and box connections and reducing high stress concentrations.Sress-relief features are manufactured in compliance with API Spec7,unless otherwise specified by customers. Slip recess and elevator recess : Shenlong offers optional elevator and slip recesses to improve handling efficiency and safety.The upper radius of elevator recess is cold-rolled to increase product life.Slip and elevator recesses can be used together or seperately.Unless otherwise specified,slip and elevator recesses are machined in compliance with API RP7G guidline. Additional photos drill collar(API) non-magnetic drill collar(API)

Company Information (Shenlong petroleum drilling tools Co.,Ltd)

Company Profile: Shenlong Petroleum drilling tools Co.,Ltd,a Sino-US joint enterprise,is one of the leading manufactures of drilling tools in mainland China. We manage our production line and inspection process according to the requirement of API.Our main products include slick drill collar,spiral drill collar,non-magnetic drill collar,heavy weight drill pipe,stabilizer,square and hexagonal Kelly,drill stem subs,amongst others. Our products have been widely used by many important oilfields both home and abroad.It is proved that there is no gluing or fracture after 600- hour conscecutive drilling.Our products can last much longer than that of many other competitors. With more than 60% of our products exported,we have long been enjoying a solid reputation both home and abroad.Here we promise you that your every enquiry will receive our prompt and careful reply!We will prove you that we will be your most trustable supplier of high quality products. Hope your enquiry all the time! Website URL: http://www.petrodrillingtools.com Year Established: 2006 Products/Service: drill collar(slick,spiral,non-magnetic), heavy weight drill pipe,stabilizer,drill stem subs,kelly

Other Listings by Shenlong petroleum drilling tools Co.,Ltd