草莓視頻app在線下載: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)(xing)(xing)和(he)(he)異形(xing)(xing)(xing)兩種(zhong)，異形(xing)(xing)(xing)管(guan)(guan)(guan)(guan)有方形(xing)(xing)(xing)、橢圓形(xing)(xing)(xing)、三角形(xing)(xing)(xing)、六角形(xing)(xing)(xing)、瓜子形(xing)(xing)(xing)、星形(xing)(xing)(xing)、 帶翅管(guan)(guan)(guan)(guan)多種(zhong)復雜形(xing)(xing)(xing)狀。******直徑(jing)達(da)650mm，最小直徑(jing)為 6mm。根據用(yong)(yong)途(tu)不同， 有厚(hou)壁管(guan)(guan)(guan)(guan)和(he)(he)薄壁管(guan)(guan)(guan)(guan)。無縫鋼管(guan)(guan)(guan)(guan)主要用(yong)(yong)做石油地(di)質鉆探管(guan)(guan)(guan)(guan)、石油化(hua)工(gong)用(yong)(yong)的裂化(hua)管(guan)(guan)(guan)(guan)、鍋 爐管(guan)(guan)(guan)(guan)、軸承管(guan)(guan)(guan)(guan)以及(ji)汽車、拖拉機(ji)、航空用(yong)(yong)高精(jing)度結構鋼管(guan)(guan)(guan)(guan)。

　　20#無縫鋼管用(yong)(yong)(yong)途(tu)很廣泛。一般用(yong)(yong)(yong)途(tu)的(de)(de)無(wu)縫鋼(gang)(gang)管(guan)(guan)(guan)由普通的(de)(de)碳素結構(gou)鋼(gang)(gang)、低(di)合(he)金(jin)結構(gou)鋼(gang)(gang)或(huo)合(he)金(jin)結構(gou)鋼(gang)(gang)軋制，產量最多，主要用(yong)(yong)(yong)作(zuo)輸(shu)送流體的(de)(de)管(guan)(guan)(guan)道或(huo)結構(gou)零件。.2、根據用(yong)(yong)(yong)途(tu)不同(tong)分三類供(gong)應(ying)(ying)(ying)(ying)：a、按化學(xue)成分和機械(xie)性能供(gong)應(ying)(ying)(ying)(ying);b、按機械(xie)性能供(gong)應(ying)(ying)(ying)(ying);c、按水(shui)(shui)壓(ya)試驗供(gong)應(ying)(ying)(ying)(ying)。按a、b類供(gong)應(ying)(ying)(ying)(ying)的(de)(de)鋼(gang)(gang)管(guan)(guan)(guan)，如用(yong)(yong)(yong)于承受液(ye)體壓(ya)力，也要進行水(shui)(shui)壓(ya)試驗。3、專門用(yong)(yong)(yong)途(tu)的(de)(de)無(wu)縫管(guan)(guan)(guan)有鍋(guo)爐用(yong)(yong)(yong)無(wu)縫管(guan)(guan)(guan)、化工(gong)電力用(yong)(yong)(yong)，地質用(yong)(yong)(yong)無(wu)縫鋼(gang)(gang)管(guan)(guan)(guan)及石(shi)油用(yong)(yong)(yong)無(wu)縫管(guan)(guan)(guan)等多種(zhong)。

　　20#無縫鋼管具有(you)中空截(jie)面，大量(liang)(liang)用作輸送流體的(de)管道，如輸送石油、天(tian)然氣(qi)(qi)、煤氣(qi)(qi)、水(shui)及(ji)某些固(gu)體物料的(de)管道等。鋼管與(yu)圓鋼等實心鋼材(cai)相比(bi)，在(zai)抗彎抗扭(niu)強(qiang)度相同(tong)時，重量(liang)(liang)較輕，是(shi)一種經濟截(jie)面鋼材(cai)。

　　廣泛用(yong)于制造(zao)結構件(jian)和(he)機械零件(jian)，如石油鉆桿、汽車(che)傳(chuan)動軸(zhou)、自行車(che)架(jia)以及建筑施工(gong)中用(yong)的鋼(gang)腳手架(jia)等(deng)用(yong)鋼(gang)管(guan)制造(zao)環形零件(jian)，可提高材料利用(yong)率，簡化制造(zao)工(gong)序，節約材料和(he)加工(gong)工(gong)時(shi)，已廣泛用(yong)鋼(gang)管(guan)來制造(zao)。