Tubular for suppleness or flat for greater toughness, tape is specifically used for belay slings. the only knot which must be used to tie them is the tape knot.

Breaking load:
Flate 20 mm: 1000 daN (kg)
Flate 26 mm: 1500 daN (kg)
Flate 30 mm: 1600 daN (kg)
Flate 45 mm: 2200 daN (kg)
Flate super 18 mm: 1600 daN (kg)

Certification: CE, EN 565. UIAA.