ASTM A252 npog cov qauv tsim rau seamless lossis welded pawg yeeb nkab. Qhov kev qhia tshwj xeeb no suav nrog cylindrical nominal phab ntsa steel kav siv los ua cov pawg ruaj khov lossis cov casings rau cov pob zeb ua vaj tse.
Cov kav dej no tau muab faib ua Chav Kawm 1, Chav Kawm 2 thiab Chav Kawm 3, qhov kawg ntawm cov khoom siv feem ntau yog siv los ua piling los pab muab lub hauv paus ruaj khov thiab kev txhawb nqa rau cov tsev thiab lwm yam kev tsim kho.
Rau feem ntau cov qauv kev tsim kho, Chav Kawm 1, Chav Kawm 2, Chav Kawm 3 ASTM A252 piping yuav tsum ua haujlwm zoo. Ntawm cov ASTM Qib -3, cov yeeb nkab yog qhov nyiam ntau yam vim tias lawv muaj lub zog tensile ntawm 60, 000 psi thiab lub zog tawm ntawm 45, 000 psi. Qhov kev qhia tshwj xeeb no tsuas yog siv cov kav hlau cylindrical thiab tsis suav nrog txhua cov kav hlau plaub.
Tensile Measurements rau ASTM A252 Qib 3 Pipes
| Qib | Yield Point | Min. Elongation ntawm 2 degree | Tensile zog | Min. Elongation ntawm 8 degree |
| 3 | 45 000 psi | 20% | 66 000 psi | … |
Xam qhov tsawg kawg nkaus Elongation tus nqi ntawm ASTM A252 Qib 3 Pipes
| Nominal Phab Ntsa Thickness hauv Inches | Tsawg kawg Elongation% hauv 2 Nti rau ASTM A252 Qib 3 |
| 5/16 los yog 0.312 nti | 20.00 |
| 9/32 los yog 0.281 nti | 19.00 |
| ¼ los yog 0.250 nti | 18.00 |
| 7/32 los yog 0.219 nti | 17.00 |
| 3/16 los yog 0.188 nti | 16.00 |
| 11/64 los yog 0.172 nti | 16.00 |
| 5/32 los yog 0.156 nti | 15.00 |
| 9/64 los yog 0.141 nti | 14.00 |
| 1/8 los yog 0.125 nti | 14.00 |
| 7/64 los yog 0.109 nti | 13.50 |
