1.waxaan nahay xirfadle soo saar iyo dhoofiye tuubooyin bir ah.

2. waxaan codsanay oo helnay 3 shati. (Tuubada godka, tuubada garabka iyo tuubada Victaulic)

3. Qalabka wax soo saarkayaga waxaa ka mid ah 4 khadad wax soo saar oo hore loo galiyey, 8 khadad wax soo saar oo tuubo bir ah oo ERW ah, 3 khadad habka galvanized ee kulul lagu dhex qasay)

4. Wax soo saarka sanadlaha ah ee tuubooyinka kala duwan waa in ka badan 300 oo kun oo tan. Waxay daboolaysaa baaxadda tuubooyinka wareegsan ee 15-457mm. 10*10–1000*1000mm tuubo laba jibbaaran, 10*15–500*1000mm tuubo afargeesle ah, dhumucdeeduna waa 0.8–30mm.

5. Warshadeenu waxay u dhowdahay Dekedda Tianjin. Kaliya 40 kiiloomitir.