TIANHE OIL GROUP GO . ,LTD,'cover',1,'enterprise',2,'contents',4,'slick drill collar',6,'spiral drill collar',7,'spiral drill collar with elevator groove and slip groove',8,'integral heavy weight drill pipe',9,'Kelly ',10,'wz type integral straight blade stabilizer',11,'integral spiral blade stabilizer',12,'replaceable sleeve spiral stabilizer',13,'fixed diameter hole opener',14,'roller reamer',15,'non-rotating stabilizer',16,'float valve stabilizer',17,'spherical stabilizer',18,'hf3000 hard facing stabilizer',19,'tool joint',20,'crose-over sub',21,'drill tool lifting sub',22,'lifting cap',23,'circulating head',24,'orented bent sub',25,'float valve sub',26,'fj type-arrow back pressure valve',27,'inside bop',28,'ft type drop-in check valve ',29,'casing scraper',30,'Kelly valve',31,'tsq type casing pressure testing plug',32,'drift ',33,'ZSJ/ZXJ type drilling jars',34,'CSJ type super fishing jars',35,'YSJ tyoe hydraulic up jars',36,'ZJS type jar intensifiers',37,'DJ type surface bumper jars',38,'KXJ type fishing bumper subs',39,'SJ type double-way shock absorbers',40,'YJ type one-way shock absorbers ',41,'releasing and circulating overshots',42,'releasing spears',43,'reverse circulation junk baskets',44,'reverse circulation fishing magnets',45,'taper taps',46,'die collars',47,'junk subs',48,'releasing and reversing overshots',49,'sliding block spears',50,'sliding block spears',51,'internal hook',52,'cable fishhook',53,'h tpye safety joints',54,'cutting pilot mill shoes',55,'flat-bottom junk mill、concave-bottom junk mills',56,'drillable float collar and float shoe for PDC drill bit',57,'YXQ16 -2 type hyraulic bucking unit',58,'LMST-2 type downhole motor testers',60,'SYJ type hydraulic tester',62,'product list ',63