86 177 5193 6871
222, Block B, Diamond International, Guozhuang Road, Xuzhou, Jiangsu, China
Sleeve is small components of space frame. Sleeve uses Q235B steel (≤ M36), or 45 # steel (> M36).
LF sleeve is electro-galvanized with a smooth surface and nice look.LF sleeve section is bigger which has better load-bearing capacities.