Tilmaamaha darajada API 5L Gr.B waxay ka yimaaddaan API Spec 5L Specification for Line Pipe.Heerka xariiqda tubbada waxa ay leedahay calaamado A iyo B ksi.Ka eeg jadwalka hoose ee darajooyinka la heli karo.
API 5L Gr.B waxay dabooshaa WELDED iyoTUBE AAN XAQA lahaynku habboon in loo isticmaalo gudbinta gaaska, biyaha, iyo saliidda labadaba warshadaha saliidda iyo gaaska dabiiciga ah.
Qalabka Jirka ee Dhuumaha Khadka
| API 5L Fasalka | Xoogga Wax-soo-saarka min.(ksi) | Xoogga Jilicsan min.(ksi) | U janjeera dhanka saamiga (max.) | Dheeraynta daq.(%) |
| A | 30 | 48 | 0.93 | 28 |
| B | 35 | 60 | 0.93 | 23 |
| X42 | 42 | 60 | 0.93 | 23 |
| X46 | 46 | 63 | 0.93 | 22 |
| X52 | 52 | 66 | 0.93 | 21 |
| X56 | 56 | 71 | 0.93 | 19 |
| X60 | 60 | 75 | 0.93 | 19 |
| X65 | 65 | 77 | 0.93 | 18 |
| X70 | 70 | 82 | 0.93 | 17 |
| X80 | 80 | 90 | 0.93 | 16 |
Waqtiga boostada: Febraayo-21-2020