... system: 1.primer 2.anticorrosion inner tape 3.protection outer tape 4.joint tape Place of Origin: Shandong China (Mainland)Brand Name: polykenModel ... s related primer.Inner Wrap, Outer Wrap, Joint Wrap, Primer, Double Sided Adhesive tape,these products are using inorder to corrosion ... Polyken 930-30(0.762mm), Polyken 930-40(1.016mm)joint tape for pipe fittings with release linerPolyken 934-40(1.016mm ...