20號無(wu)縫(feng)鋼(gang)管(guan)是一(yi)直(zhi)運用(yong)(yong)(yong)很(hen)廣(guang)泛的(de)管(guan)材(cai)(cai),多(duo)是用(yong)(yong)(yong)于輸(shu)送(song)液體或是其他(ta)的(de)管(guan)道,如石油、煤(mei)氣、天然氣等等,而某(mou)些加工(gong)方面也(ye)會用(yong)(yong)(yong)到無(wu)縫(feng)鋼(gang)管(guan),如自行(xing)車架(jia)、汽車傳動軸(zhou)等等,今天,就(jiu)給大家具體講(jiang)(jiang)一(yi)講(jiang)(jiang)什(shen)么是20#無(wu)縫(feng)鋼(gang)管(guan).　　什(shen)么是20#無(wu)縫(feng)鋼(gang)管(guan)?這個20#是什(shen)么意思?無(wu)縫(feng)鋼(gang)管(guan)廠給大家做出講(jiang)(jiang)解(jie):　　20#是20鋼(gang)的(de)簡易寫法,屬鋼(gang)材(cai)(cai)中的(de)一(yi)種材(cai)(cai)質(zhi).常用(yong)(yong)(yong)于制造無(wu)縫(feng)鋼(gang)管(guan),模具,優質(zhi)碳素鋼(gang)板,槽鋼(gang),工(gong)字鋼(gang)等鋼(gang)材(cai)(cai).　　此種材(cai)(cai)質(zhi)中碳的(de)含(han)(han)(han)量(liang),大概在0.2%左(zuo)右.此種材(cai)(cai)質(zhi),相對于其他(ta)的(de)優碳鋼(gang),也(ye)較普遍.　　20鋼(gang):平(ping)均(jun)含(han)(han)(han)碳量(liang)為(wei)0.17-0.23%,平(ping)均(jun)含(han)(han)(han)硅量(liang)為(wei)0.17-0.37%,　　平(ping)均(jun)含(han)(han)(han)錳量(liang)為(wei)0.35-0.65%,平(ping)均(jun)含(han)(han)(han)硫量(liang)≤0.035%,平(ping)均(jun)含(han)(han)(han)磷(lin)量(liang)≤0.035%,　　平(ping)均(jun)含(han)(han)(han)鉻量(liang)≤0.20%,平(ping)均(jun)含(han)(han)(han)鎳量(liang)≤0.30%,　　含(han)(han)(han)銅(tong)0.20%左(zuo)右.