歐美成人黃色視頻:20#無縫鋼管廠家現貨生產：無縫鋼管由圓鋼經過高溫穿孔制成，表面上無焊縫的鋼管，稱為無縫鋼管。根據生產方法，無縫管分熱軋管、冷軋管、冷拔管、擠壓管等。按照斷面形狀，無縫鋼管分圓形(xing)和異形(xing)兩種，異形(xing)管(guan)(guan)有方形(xing)、橢圓形(xing)、三角(jiao)形(xing)、六(liu)角(jiao)形(xing)、瓜(gua)子形(xing)、星(xing)形(xing)、 帶翅管(guan)(guan)多種復雜形(xing)狀。******直(zhi)徑達650mm，最小直(zhi)徑為(wei) 6mm。根據用途(tu)不(bu)同， 有厚(hou)壁管(guan)(guan)和薄(bo)壁管(guan)(guan)。無縫鋼管(guan)(guan)主要用做石(shi)油(you)(you)地(di)質鉆探管(guan)(guan)、石(shi)油(you)(you)化(hua)工(gong)用的裂(lie)化(hua)管(guan)(guan)、鍋 爐管(guan)(guan)、軸承管(guan)(guan)以及汽車、拖拉機、航空用高精(jing)度(du)結(jie)構(gou)鋼管(guan)(guan)。

　　20#無縫鋼管用(yong)(yong)途(tu)(tu)很廣(guang)泛。一(yi)般用(yong)(yong)途(tu)(tu)的(de)無縫(feng)(feng)鋼(gang)管由普通的(de)碳素(su)結(jie)(jie)(jie)(jie)構鋼(gang)、低合金結(jie)(jie)(jie)(jie)構鋼(gang)或合金結(jie)(jie)(jie)(jie)構鋼(gang)軋制，產量(liang)最多(duo)，主要用(yong)(yong)作輸送流體的(de)管道或結(jie)(jie)(jie)(jie)構零件。.2、根據用(yong)(yong)途(tu)(tu)不(bu)同分三類(lei)供(gong)(gong)應(ying)(ying)：a、按化學成分和(he)機(ji)械性能(neng)供(gong)(gong)應(ying)(ying);b、按機(ji)械性能(neng)供(gong)(gong)應(ying)(ying);c、按水(shui)壓(ya)試驗供(gong)(gong)應(ying)(ying)。按a、b類(lei)供(gong)(gong)應(ying)(ying)的(de)鋼(gang)管，如用(yong)(yong)于承受液體壓(ya)力(li)，也要進行水(shui)壓(ya)試驗。3、專門用(yong)(yong)途(tu)(tu)的(de)無縫(feng)(feng)管有鍋爐用(yong)(yong)無縫(feng)(feng)管、化工電(dian)力(li)用(yong)(yong)，地質用(yong)(yong)無縫(feng)(feng)鋼(gang)管及石(shi)油用(yong)(yong)無縫(feng)(feng)管等多(duo)種。

　　20#無縫鋼管具(ju)有(you)中空截(jie)面，大量用作輸(shu)送(song)流體的管(guan)道，如(ru)輸(shu)送(song)石油、天然氣(qi)、煤(mei)氣(qi)、水及(ji)某(mou)些(xie)固體物料的管(guan)道等(deng)。鋼(gang)管(guan)與(yu)圓鋼(gang)等(deng)實心鋼(gang)材相比，在抗彎抗扭強度(du)相同(tong)時，重量較輕，是一種經濟截(jie)面鋼(gang)材。

　　廣泛(fan)用(yong)(yong)于制(zhi)造(zao)(zao)(zao)(zao)結構件和機械零件，如(ru)石油(you)鉆桿、汽車傳動軸、自行車架以及建筑(zhu)施工(gong)中(zhong)用(yong)(yong)的(de)鋼(gang)(gang)腳手架等(deng)用(yong)(yong)鋼(gang)(gang)管(guan)制(zhi)造(zao)(zao)(zao)(zao)環形(xing)零件，可(ke)提高材(cai)料(liao)利用(yong)(yong)率(lv)，簡化制(zhi)造(zao)(zao)(zao)(zao)工(gong)序，節約(yue)材(cai)料(liao)和加(jia)工(gong)工(gong)時，已廣泛(fan)用(yong)(yong)鋼(gang)(gang)管(guan)來制(zhi)造(zao)(zao)(zao)(zao)。