Boolal-qallalan waxaa laga sameeyaa bir. Si loogu qodo derbiga qalalan, waxaa loo baahan yahay kaashawiito awood leh. Mararka qaarkood waxaa la isticmaalaa barroosinno balaastig ah oo lala isticmaalo boolal-qallalan. Waxay ka caawiyaan dheellitirka miisaanka shay si siman dusha sare ugu yaal.
Boolal-gacmeedyada derbiga qalalan ee dunta adag ayaa ku fiican qabsashada alwaaxda sababtoo ah duntooda ballaaran. Tani waxay derbiga qalalan ku jiidaysaa birta. Haddii loo isticmaalo birta, noocan boolalku wuxuu u janjeeraa inuu calaliyo birta oo uusan helin jiidid habboon. Maadaama boolal-gacmeedyada dunta khafiifka ah ay is-xidhaan, waxay si fiican ugu shaqayn karaan birta.
| Cabbirka: | M4-M36, oo loo habeeyay sida aad u baahan tahay. |
| Alaab | Bir aan miridh lahayn, bir, kuwa kale |
| Dhammaad | Dhalaal, zinc dahaaran, midab EG, galvanized kulul lagu rusheeyey, madow iwm. |
| Awoodda Bixinta | 5000tons bishii |
| Shank | Si siman, simbiriirixan, godan, afargeesle, wareegsan, leexasho iwm. |
| Heerka Caadiga ah | DIN,ASME,ANSI,ISO UNI,JIS |
Codsiga
Boorarka derbiga qalalan waxaa loo isticmaalaa in lagu xidho xaashida derbiga qalalan ee ku dheggan biraha derbiga ama saqafka. Marka la barbardhigo boolalka caadiga ah, boolalka derbiga qalalan waxay leeyihiin dun qoto dheer. Tani waxay ka caawisaa ka hortagga in boolalku si fudud uga soo baxaan derbiga qalalan.
| Cabbirka (mm) | Cabbirka (Inji) | Cabbirka (mm) | Cabbirka (Inji) | Cabbirka (mm) | Cabbirka (Inji) | Cabbirka (mm) | Cabbirka (Inji) |
| 3.5*13 | #6*1/2 | 3.5 * 65 | #6*2-1/2 | 4.2*13 | #8*1/2 | 4.2*102 | #8*4 |
| 3.5*16 | #6 * 5/8 | 3.5 * 75 | #6 * 3 | 4.2*16 | #8*5/8 | 4.8*51 | #10 * 2 |
| 3.5*19 | #6*3/4 | 3.9*20 | #7*3/4 | 4.2*19 | #8*3/4 | 4.8*65 | #10*2-1/2 |
| 3.5 * 25 | #6*1 | 3.9*25 | #7*1 | 4.2*25 | #8*1 | 4.8*70 | #8*1 |
| 3.5*29 | #6*1-1/8 | 3.9*30 | #7*1-1/8 | 4.2*32 | #8*1-1/4 | 4.8 * 75 | #8*1-1/4 |
| 3.5*32 | #6*1-1/4 | 3.9*32 | #7*1-1/4 | 4.2*34 | #8*1-1/2 | 4.8*90 | #8*1-1/2 |
| 3.5*32 | #6*1-3/8 | 3.9*35 | #7*1-3/8 | 4.2*38 | #8*1-5/8 | 4.8 * 100 | #8*1-5/8 |
| 3.5 * 35 | #6*1-1/2 | 3.9*38 | #7*1-1/2 | 4.2*40 | #8*1-3/4 | 4.8*115 | #8*1-3/4 |
| 3.5 * 38 | #6*1-5/8 | 3.9*40 | #7*1-5/8 | 4.2*51 | #8*2 | 4.8*120 | #8*2 |
| 3.5*41 | #6*1-3/4 | 3.9*45 | #7*1-3/4 | 4.2*65 | #8*2-1/2 | 4.8*125 | #8*2-1/2 |
| 3.5 * 45 | #6 * 2 | 3.9*51 | #7*1-7/8 | 4.2*70 | #8*2-3/4 | 4.8*127 | #8*2-3/4 |
| 3.5*51 | #6*2-1/8 | 3.9*55 | #7*2 | 4.2*75 | #8*3 | 4.8*150 | #8*3 |
| 3.5 * 55 | #6*2-1/4 | 3.9*65 | #7*2-1/8 | 4.2*75 | #8*3-1/2 | 4.8*152 | #8*3-1/2 |
Xirmada boolal-ka ee derbiga qalalan ayaa laga heli karaa bacda poly, sanduuqa warqadda, sanduuqa balaastikada ah, bac balaastig ah oo kaarka warqadda ah, iyo baakad loogu talagalay macaamiisha.
* waxaan ku siin karnaa lambarka macaamiisha iyo calaamadda dhammaan baakadaha
* Baakad loogu talagalay macaamiisha ayaa la heli karaa
Waxaan sidoo kale bixinnaa Qoriga Hawada Kulul ee Warshadaha ee Korontada si uu si fudud kaaga caawiyo shaqadaada.
















