Advance Tapes AT20 is a PVC electrical tape that's Extra Heavy Duty in strength and flame retardant. Similar to the thinner AT10 but gives much more protection e.g. larger pipework applications as the tape has twice the breaking load. The Black pipewrap tape is heavy duty and PVC film coated with a clear, anti-corrosive, aggressive adhesive.
This black electrical tape thickness is 0.44mm, temperature is -5°C to +80°C. Its B/down voltage is 12KV and has a breaking load of 90 N/cm.