Imiyoboro y'icyuma cya karuboni ikozwe mu cyuma cya Helical-seam ASTM A139 Grade A, B, C
Imitungo ya Mekanike
| Icyiciro cya A | Icyiciro cya B | Icyiciro cya C | Icyiciro cya D | Icyiciro cya E | |
| Ingufu z'umusaruro, ubugari, Mpa (KSI) | 330 (48) | 415 (60) | 415 (60) | 415 (60) | 445 (66) |
| Ingufu zo gukurura, ubunini, Mpa (KSI) | 205 (30) | 240 (35) | 290 (42) | 315 (46) | 360 (52) |
Ibikoresho bya shimi
| Igice | Imiterere, Ibipimo ntarengwa, % | ||||
| Icyiciro cya A | Icyiciro cya B | Icyiciro cya C | Icyiciro cya D | Icyiciro cya E | |
| Karuboni | 0.25 | 0.26 | 0.28 | 0.30 | 0.30 |
| Manganese | 1.00 | 1.00 | 1.20 | 1.30 | 1.40 |
| Fosifore | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 |
| Sulfure | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 |
Ikizamini cy'amazi
Buri burebure bw'umuyoboro bugomba kugeragezwa n'uruganda ku gitutu cya hydrostatic kizatera mu rukuta rw'umuyoboro igitutu kitari munsi ya 60% by'imbaraga z'umusaruro ntarengwa wagenwe ku bushyuhe bw'icyumba. Igitutu kigomba kugenwa n'ikigereranyo gikurikira:
P=2St/D
Impinduka zemewe mu buremere n'ingano
Uburebure bwa buri muyoboro bugomba gupimwa ukwabwo kandi uburemere bwabwo ntibugomba gutandukana kurenza 10% hejuru cyangwa 5.5% munsi y'uburemere bwabwo, bubarwa hakoreshejwe uburebure bwabwo n'uburemere bwabwo kuri buri gice cy'uburebure.
Umurambararo wo hanze ntugomba gutandukana kurenza ± 1% ugereranije n'umurambararo wo hanze wagenwe.
Ubugari bw'urukuta aho ari ho hose ntibugomba kurenza 12.5% munsi y'ubugari bw'urukuta bwagenwe.
Uburebure
Uburebure bumwe butunguranye: 16 kugeza 25ft (4.88 kugeza 7.62m)
Uburebure bubiri butunguranye: hejuru ya 25ft kugeza 35ft (7.62 kugeza 10.67m)
Uburebure bungana: ihinduka ryemewe ± 1in
Irangira
Imiyoboro y'amazi igomba gushyirwaho impera zisanzwe, kandi uduce tw'amazi ku mpera tugomba gukurwaho
Iyo impera y'umuyoboro yagenwe kuba impera z'umuyoboro, inguni igomba kuba hagati ya dogere 30 na 35








