Alaabta
ERW Carbon Steel Black&HDG Dhuumaha
Halbeegga
| Dhexdhexaadiyaha caadiga ah | OD | Dhumucda darbiga | |||
| L | M | H | |||
| NB | INCH | MM | MM | MM | MM |
| 65 | 2-1/2 | 76 | 2.3 | 3.2 | 5.2 |
| 80 | 3 | 88.9 | 2.6 | 4.8 | 5.5 |
| 90 | 3-1/2 | 101.6 | 2.6 | 3.2 | 5.7 |
| 100 | 4 | 114.3 | 3.2 | 4.8 | 6.0 |
| 125 | 5 | 139.7 | 3 | 3.5 | 6.6 |
| 150 | 6 | 165.1 | 4.8 | 6.4 | 7.1 |
| 200 | 8 | 219.1 | 4.8 | 6.4 | 8.2 |
| 250 | 10 | 273.1 | 4.8 | 6.4 | 9.3 |
| 300 | 12 | 323.9 | 6.4 | 9.5 | 12.7 |
| 350 | 14 | 355.6 | 6.4 | 9.5 | 12.7 |
| 400 | 16 | 406.4 | 6.4 | 9.5 | 12.7 |
Kala saar
Marka loo eego hababka wax soo saarka, tuubooyinka birta waxaa loo qaybin karaa laba qaybood: tuubooyinka birta ah ee aan fiicnayn iyo tuubooyinka birta ah ee welded.Dhuumaha birta welded waxaa loo tixraacaa sida tuubooyinka alxanka gaaban.
Tuubooyinka birta ah ee aan fiicneyn waxaa loo qaybin karaa tuubooyinka duuban ee kulul, tuubooyinka qaboobaha, tuubooyinka saxda ah ee birta, tuubooyinka kulul, tuubooyinka qaboojiyaha, iyo tuubooyinka dibadda loo saaro iyadoo loo eegayo hababka wax soo saarka.
Tuubooyinka birta ah ee aan xumi lahayn waxay ka samaysan yihiin bir kaarboon ah oo tayo sare leh ama bir daawaha ah, waxayna noqon karaan duub kulul ama qabow duuban (la sawiray).
Tuubooyinka birta welded waxay u qaybsamaan tuubooyinka foornada alxanka leh, alxanka korontada (alxanka caabbinta) tuubooyinka, iyo tuubooyinka alxanka tooska ah ee arc sababtoo ah hababka alxanka ee kala duwan.Hababka alxanka ee ay ku kala duwan yihiin awgeed, waxay u kala qaybsan yihiin tolmo toosan oo alxan leh iyo tuubooyinka alxanka leh.Iyadoo ay ugu wacan tahay qaababkooda dhamaadka, waxay u sii kala qaybsan yihiin tuubooyinka alxanka ah ee wareegyada ah iyo qaab gaar ah (square, flat, iwm.) tuubooyinka alxanka ah.
Tuubooyinka birta alxanka leh waxaa lagu sameeyaa alxanka taarikada birta oo la isku rogey qaabab tuubbo leh oo leh dabada ama tolida wareegyada.Marka la eego hababka wax soo saarka, waxay u sii kala qaybsan yihiin tuubooyinka birta alxanka leh ee loogu talagalay gaadiidka dareeraha cadaadiska hooseeya, tuubooyinka birta ah ee alxanka leh, tuubooyinka birta si toos ah u duuban, iyo tuubooyinka korontada ku xiran.Tuubooyinka birta ah ee aan fiicnayn waxaa loo isticmaali karaa warshado kala duwan sida dhuumaha gaaska dareeraha ah iyo dhuumaha gaaska.Tuubooyinka alxanka ah waxaa loo isticmaali karaa dhuumaha biyaha, dhuumaha gaaska, dhuumaha kululaynta, dhuumaha korontada, iwm.
