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15CrMoG高壓鍋爐管GB5310 http://www.gwyxq.cn/gaoyaguoluguan/253.html 15CrMoG高壓鍋爐管GB5310]]> L360管線管什么標(biāo)準(zhǔn) http://www.gwyxq.cn/guanxianguan/248.html L360管線管什么標(biāo)準(zhǔn) 無(wú)縫鋼管現(xiàn)貨  無(wú)縫鋼管廠家 ]]> 16Mn鋼管 標(biāo)準(zhǔn)GB6479化肥專用管 http://www.gwyxq.cn/huafeizhuanyongguan/240.html 16Mn鋼管 標(biāo)準(zhǔn)GB6479化肥專用管

16Mn無(wú)縫鋼管
老標(biāo)16Mn無(wú)縫鋼管

16Mn無(wú)縫鋼管
16Mn為低合金高強(qiáng)度結(jié)構(gòu)鋼:含碳量為0.1%-0.25%,加入主要合金元素錳、硅、釩、鈮和鈦等;它的含合金總量<3%。按強(qiáng)度分為300、350、400和450MPa等4個(gè)級(jí)別。主要有Q295、Q345、Q390、Q420、Q460。“Q”是屈服的“屈”字的漢語(yǔ)拼音大寫字頭,其后數(shù)字為該牌號(hào)最小屈服點(diǎn)(σs)值,其后的符號(hào)是按...

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