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(yuan)形(xing)(xing)(xing)(xing)和(he)異形(xing)(xing)(xing)(xing)兩(liang)種，異形(xing)(xing)(xing)(xing)管(guan)(guan)有(you)方形(xing)(xing)(xing)(xing)、橢圓(yuan)形(xing)(xing)(xing)(xing)、三角形(xing)(xing)(xing)(xing)、六角形(xing)(xing)(xing)(xing)、瓜子形(xing)(xing)(xing)(xing)、星形(xing)(xing)(xing)(xing)、 帶(dai)翅管(guan)(guan)多種復(fu)雜形(xing)(xing)(xing)(xing)狀。******直(zhi)徑(jing)達650mm，最小直(zhi)徑(jing)為(wei) 6mm。根據用途不(bu)同(tong)， 有(you)厚(hou)壁管(guan)(guan)和(he)薄(bo)壁管(guan)(guan)。無縫鋼管(guan)(guan)主要(yao)用做石油地質(zhi)鉆探管(guan)(guan)、石油化(hua)工用的裂化(hua)管(guan)(guan)、鍋 爐管(guan)(guan)、軸承管(guan)(guan)以及汽車、拖拉機、航空用高精度結(jie)構鋼管(guan)(guan)。

　　20#無縫鋼管用(yong)(yong)途(tu)(tu)很廣泛。一(yi)般(ban)用(yong)(yong)途(tu)(tu)的(de)無(wu)(wu)(wu)縫鋼(gang)(gang)(gang)管由普通的(de)碳素結(jie)(jie)構鋼(gang)(gang)(gang)、低(di)合(he)金(jin)結(jie)(jie)構鋼(gang)(gang)(gang)或合(he)金(jin)結(jie)(jie)構鋼(gang)(gang)(gang)軋制，產量最多，主要用(yong)(yong)作輸送(song)流體(ti)的(de)管道或結(jie)(jie)構零件。.2、根據用(yong)(yong)途(tu)(tu)不同分三類供(gong)應(ying)：a、按(an)化學(xue)成(cheng)分和機械性能供(gong)應(ying);b、按(an)機械性能供(gong)應(ying);c、按(an)水壓(ya)試驗供(gong)應(ying)。按(an)a、b類供(gong)應(ying)的(de)鋼(gang)(gang)(gang)管，如用(yong)(yong)于承受液體(ti)壓(ya)力，也要進行水壓(ya)試驗。3、專門用(yong)(yong)途(tu)(tu)的(de)無(wu)(wu)(wu)縫管有(you)鍋爐(lu)用(yong)(yong)無(wu)(wu)(wu)縫管、化工電力用(yong)(yong)，地(di)質用(yong)(yong)無(wu)(wu)(wu)縫鋼(gang)(gang)(gang)管及(ji)石油用(yong)(yong)無(wu)(wu)(wu)縫管等多種(zhong)。

　　20#無縫鋼管具(ju)有中(zhong)空截面，大量(liang)用作輸送(song)(song)流體的管(guan)道(dao)，如(ru)輸送(song)(song)石油、天然氣、煤氣、水及某些(xie)固體物料的管(guan)道(dao)等。鋼(gang)(gang)管(guan)與(yu)圓鋼(gang)(gang)等實心鋼(gang)(gang)材相比，在抗(kang)彎抗(kang)扭強度相同時，重量(liang)較輕，是一種經濟截面鋼(gang)(gang)材。

　　廣(guang)泛用(yong)于制(zhi)(zhi)造結構(gou)件和機(ji)械零(ling)件，如石油鉆桿、汽車傳動軸、自行車架(jia)(jia)以及建筑施工(gong)中用(yong)的鋼腳手架(jia)(jia)等用(yong)鋼管制(zhi)(zhi)造環形零(ling)件，可提高材料利(li)用(yong)率，簡(jian)化(hua)制(zhi)(zhi)造工(gong)序(xu)，節約材料和加工(gong)工(gong)時(shi)，已廣(guang)泛用(yong)鋼管來制(zhi)(zhi)造。