... 1,API5DP 2.OD:2-3/8,2-7/8,3-1/2,4,4-1/2,5,5-1/2,6- ... high quality and API certified tool joint for drill pipes' connections. These tool joints are turned, bored and ... meet the requirements in API specifications. Every tool joint is subjected to non-magnetic inspection ... the joint tools. The mechanical property of the tool joint is as follow.Tensile Strength: More than ... : More than 54 J 5-1/2"H tool joint