... :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 ... section of gas transition and distribution pipeline, also the part between gas reducing station and the pipeline, which increase the ...