Pipeline steel phaj yog tshwj xeeb steel daim hlau tsim tshwj xeeb rau kev tsim cov kav dej. Cov phaj no yog tsim los ntawm cov hlau zoo hlau alloys uas muaj cov cuab yeej tshwj xeeb thiab cov yam ntxwv kom tau raws li qhov xav tau ntawm kev siv cov raj xa dej.
Pipeline steel daim hlau yuav tsum muaj lub zog siab los tiv thaiv lub siab sab hauv thiab cov khoom siv sab nraud tawm ntawm cov kav dej. Lub zog no yog ua tiav los ntawm kev ua tib zoo alloying thiab kev kho cua sov txheej txheem.
Cov tshuaj tiv thaiv ntawm Q235B carbon steel phaj.
| C | Si | Mn | S | P | Cr | Ni | Cu | |
| Q235B | 0.12~0.20 | Tsawg dua lossis sib npaug rau 0.30 | 0.30~0.70 | Tsawg dua lossis sib npaug rau 0.045 | Tsawg dua lossis sib npaug rau 0.045 | Tsawg dua lossis sib npaug rau 0.30 | Tsawg dua lossis sib npaug rau 0.30 | Tsawg dua lossis sib npaug rau 0.30 |
Cov cuab yeej cuab tam ntawm Q235B carbon steel phaj.
Yield zog
| Tsawg dua los yog sib npaug li 16 hli | 16-40 hli | 40-100 hli | 100-150 hli | 150-200 hli | |
| Q235B | Ntau dua lossis sib npaug li 235 | Ntau dua lossis sib npaug li 225 | Ntau tshaj lossis sib npaug rau 215 | Ntau dua lossis sib npaug rau 195 | Ntau dua lossis sib npaug rau 185 |
Cim npe nrov: x70 pipeline steel phaj, Tuam Tshoj x70 pipeline steel phaj manufacturers, lwm tus neeg, hoobkas