API 5L Gr.B grade designations los ntawm API Spec 5L Specification rau Kab Yeeb.Standard Line Pipe muaj qib A thiab B. Cov qib muaj zog muaj qhov kev xaiv X ua raws li qhov tsawg kawg nkaus yield zog ntawm cov yeeb nkab steel, ntsuas hauv kilopounds ib square inch (abbreviated ksi), xws li X60 rau cov yeeb nkab uas muaj qhov tsawg kawg nkaus yield zog ntawm 60 ksi ua.Saib cov lus hauv qab no rau cov qhab nia uas muaj.
API 5L Gr.B npog WELDED thiabSEAMLESS PIPEhaum rau siv nyob rau hauv conveying roj, dej, thiab roj nyob rau hauv ob qho tib si roj thiab natural gas industries.
Kab yeeb nkab lub cev muaj zog
| API 5L Qib | Yield zog min (ksi) | Tensile zog min (ksi) | Yield rau Tensile Ratio (max.) | Elongation min.(%) |
| A | 30 | 48 | 0.93 ua | 28 |
| B | 35 | 60 | 0.93 ua | 23 |
| X42 | 42 | 60 | 0.93 ua | 23 |
| X46 | 46 | 63 | 0.93 ua | 22 |
| X52 | 52 | 66 | 0.93 ua | 21 |
| X56 | 56 | 71 | 0.93 ua | 19 |
| X 60 | 60 | 75 | 0.93 ua | 19 |
| X 65 | 65 | 77 | 0.93 ua | 18 |
| X 70 | 70 | 82 | 0.93 ua | 17 |
| X80 | 80 | 90 | 0.93 ua | 16 |
Post lub sij hawm: Feb-21-2020