... joint 1)Material: CS,SS AS 2)Size:1/2"-60" 3)Pressure:CLS 150-25004) ISO 9001:2008, ASME Certificate and U ... 2, CL150,CL200,CL300,CL600,CL900,CL1500,CL2500 Introduction:Insulating joint (Isolating Joint) is the key component in Cathodic Protection (CP) System ... . It is mainly used in underground gas transition and distribution system ...