Those are *Pipeline Anti-Corrosion Tape / Pipe Wrapping Tape*
*Product details:*
1. *Type*: PE / Polyethylene Pipe Protection Tape + Inner Layer Tape
2. *Colors*: Black outer wrap + White inner primer/liner tape
3. *Structure*: Usually sold as a 2-part system
- *Inner tape*: White - butyl rubber or primer tape for adhesion
- *Outer tape*: Black - PE anti-corrosion wrap for mechanical protection
4. *Features*:
- Cold-applied, no torch needed
- Resistant to water, chemicals, and soil
- Used with pipeline coating systems
5. *Use*: Protecting oil & gas pipelines, water pipes, and underground steel pipes from corrosion. Standard for Vinoil / oilfield pipeline projects.