Q: Yuav ua li cas paub qhov txawv ntawm seamless steel kav ntawm Qib 10 # thiab 20 # hauv GB / T 8163?
A: Qhov sib txawv tseem ceeb yog cov ntsiab lus carbon: 10 # steel muaj cov ntsiab lus carbon ntawm 0.07% -0.14%, thiab 20 # steel muaj cov ntsiab lus carbon ntawm 0.17% -0.24% . 20# steel muaj zog dua thiab hardness dua 10 # steel, thaum 10 # steel muaj zoo plasticity thiab weldability.
Q: Dab tsi yog daim ntawv thov ntawm API 5L X80 seamless steel kav?
A: API 5L X80 yog qib siab - lub zog kav dej steel nrog qhov tsawg kawg nkaus lub zog ntawm 80 ksi (552 MPa). Nws yog tsuas yog siv nyob rau hauv ntev - deb, siab - roj thiab roj xa mus kav, uas yuav txo tau cov yeeb nkab phab ntsa thickness thiab txo nqi engineering.
Q: Dab tsi yog qhov tsawg kawg nkaus tensile lub zog ntawm ASTM A106 Qib B seamless steel kav?
A: Qhov tsawg kawg nkaus tensile lub zog ntawm ASTM A106 Qib B seamless steel kav yog 485 MPa (70 ksi), thiab qhov tsawg kawg nkaus yield zog yog 290 MPa (42 ksi).
Q: API 5L X52 seamless steel kav puas tuaj yeem siv nyob rau hauv qis - qhov kub thiab txias?
A: Yog. API 5L X52 seamless steel kav muaj qhov zoo qis -kub toughness. Qhov ntsuas kub tsawg kawg nkaus tuaj yeem ncav cuag -20℃(rau cov qib txheem), thiab yog tias nws yog qib qis-kub hloov kho (xws li X52N), nws tuaj yeem siv rau hauv ib puag ncig qis li -40℃.
Q: Dab tsi yog qhov yuav tsum tau ua kom tawv tawv ntawm GB / T 3087 20# seamless steel kav (boiler thiab cua kub exchanger kav)?
A: Brinell hardness (HB) ntawm GB / T 3087 20# seamless steel kav yuav tsum tsis pub tshaj 170 HB. Nws ua kom cov yeeb nkab muaj kev ua tau zoo thiab muaj zog nyob rau hauv siab - qhov kub thiab txias - siab.
