... protect the pipe and its anti-corrosion tape surface from damages.Joint wrap tape is mainly used on underground, underwater ... the adhesive layer is much thicker.Specification of tape: Inner wrap tape: T-140 (0.38mm), T-150 (0.51mm), ... T-180 (0.76mm), T-1100 (1.02mm), Outer wrap tape: T-240 (0.38mm), T-250 (0.51mm), T ... T-280 (0.76mm), T-2100 (1.02mm),Joint wrap tape: T-365 (0.64mm), T-380 (0.76mm), T ...