Mamello e sebetsang:
Bophara ba ka Ntle: ±0.005 ho (0.13 mm)
Botenya ba Lerako: + 10%~ -5%
Botenya ba lebota ha boa lokela ho fapana ho feta 0.003 ho (0.08mm) ho pholletsa le bolelele ba maoto a 10.
Bolelele: ±0.25 in (6.4 mm)
Boemo: UL797-2000
Qetello: Zinc e entsoeng ka letsoho, pele ho galvanized
Zinc e koahetsoeng: sehlopha sa 3, 80-120 g / m2;sehlopha sa 4, 275-500 g / m2