A cikin ƙwanƙwasa, littafan ƙarfafawa bututu ne a kwance ko katako wanda ke haɗa ma'auni na tsaye ko madaidaiciya, yana ba da tallafi da rarraba kaya. Yana taimakawa wajen ƙarfafa tsarin zane-zane da tabbatar da kwanciyar hankali da aminci.
Biyu / Truss / gada / ƙarfafa littatafai
Material: Q235 Karfe
Maganin saman: Hot tsoma galvanized
Girma:Φ48.3 * 2.75 mm ko musamman ta abokin ciniki
| Tsawon | nauyi |
| 1.57m / 5'2 ” | 10.1kg /22.26lbs |
| 2.13m / 7' | 16.1kg /35.43lbs |
| 2.13 m / 10' | 24 kg /52.79lbs |
