Q355 steel yog Suav teb qis-alloy high-strength steel qauv uas hloov Q345. Cov khoom siv ceev yog 7.85 g / cm3. Raws li GB/T 1591-2018, Q355 muaj 3 qib zoo: Q355B, Q355C thiab Q355D.
Q355 yog ib hom hlau. Nws yog ib hom low-alloy high-strength steel structural steel, dav siv nyob rau hauv choj, tsheb, nkoj, tsev, siab hlab ntsha, tshwj xeeb cov cuab yeej, thiab lwm yam., qhov "Q" txhais tau tias yield zog, 355 txhais tau hais tias lub yield zog ntawm no. steel yog 355MPa, thiab yuav hloov nrog lub sijhawm. Raws li cov thickness ntawm cov khoom nce, nws cov nqi tawm los txo.
Q355 steel muaj cov khoom siv zoo, zoo weldability, kub thiab txias ua haujlwm thiab corrosion kuj. Nws tuaj yeem siv los tsim cov khoom siv welded nrog cov khoom hnyav dua xws li cov nkoj, boilers, cov hlab ntsha siab, cov roj av cia tank, txuas hniav, cov khoom siv fais fab, nqa thiab tsheb thauj mus los, thiab lwm yam.
