Suxulka birta aan lahayni sidoo kale waa nooc ka mid ah birta-tubo gaar ah oo qaabaysan, inta badan si loo kala saaro qaabka tuubada ka dib samaynta, sida tube U-qaabeeya, tuubada J-qaabeeya, tube S-qaabeeya, 90-degree suxulka madaxa mas, iwm.
1) Dhexroorka dibadda: +/- 0.05mm.
2) Dhumucdiisuna: +/- 0.05mm.
3) Dhererka: +/- 10mm.
4) Hubi in ay alaabta ku urursan yihiin.
5) Tuubbada jilicsan: 180 ~ 210HV.
6) tube dhexdhexaad ah: 220 ~ 300HV.
7) Tuubo adag: in ka badan 330HV.