... :2008, ASME Certificate and U stamp Deatiled production description Monolithic Insulating joint1, Pup material: API 5L Gr.B, X42, X46 ... X70 2, CL150,CL200,CL300,CL600,CL900,CL1500,CL2500 Introduction:Insulating joint (Isolating Joint) is the key component in Cathodic ... * Hydrostatic test: 1.5 times MOP (Max. Operation Pressure).* Electrical Resistance: >= 20Mohm @ 1000v DC under dry air at 25 oC ...