45#無縫鋼管的現貨資源目前規格齊全，無縫鋼管用途很廣泛，一般用途的無縫鋼管由普通的碳素結構鋼、低合金結構鋼或合金結構鋼軋制，產量多，主要用作輸送流體的管道或結構零件。根據用途(tu)不(bu)同(tong)分三類(lei)供應(ying)：

　　A、按化(hua)學成分和機(ji)械性能供(gong)應;

　　B、按機械)性能供應;

　　C、按水壓試驗供應。GB9948無縫鋼管主要用來生產氣動或液壓元件的產品，如氣缸或油缸，都是用無縫管。45#無縫鋼管的化學成(cheng)分(fen)有(you)碳C、硅Si、錳Mn、硫(liu)S、磷P、鉻Cr。GB5310無(wu)(wu)縫鋼(gang)管(guan)(guan)(guan)(guan)(guan)按照用(yong)途(tu)分(fen)為(wei)結構用(yong)無(wu)(wu)縫鋼(gang)管(guan)(guan)(guan)(guan)(guan);輸送用(yong)無(wu)(wu)縫鋼(gang)管(guan)(guan)(guan)(guan)(guan);鍋爐用(yong)無(wu)(wu)縫鋼(gang)管(guan)(guan)(guan)(guan)(guan);鍋爐用(yong)高壓無(wu)(wu)縫鋼(gang)管(guan)(guan)(guan)(guan)(guan)、無(wu)(wu)縫鋼(gang)管(guan)(guan)(guan)(guan)(guan)按照斷面形(xing)(xing)(xing)(xing)(xing)(xing)(xing)狀，無(wu)(wu)縫鋼(gang)管(guan)(guan)(guan)(guan)(guan)分(fen)圓形(xing)(xing)(xing)(xing)(xing)(xing)(xing)和異(yi)形(xing)(xing)(xing)(xing)(xing)(xing)(xing)兩(liang)種，異(yi)形(xing)(xing)(xing)(xing)(xing)(xing)(xing)管(guan)(guan)(guan)(guan)(guan)有(you)方形(xing)(xing)(xing)(xing)(xing)(xing)(xing)、橢(tuo)圓形(xing)(xing)(xing)(xing)(xing)(xing)(xing)、三角形(xing)(xing)(xing)(xing)(xing)(xing)(xing)、六角形(xing)(xing)(xing)(xing)(xing)(xing)(xing)、瓜子形(xing)(xing)(xing)(xing)(xing)(xing)(xing)、星(xing)形(xing)(xing)(xing)(xing)(xing)(xing)(xing)、帶翅(chi)管(guan)(guan)(guan)(guan)(guan)多(duo)種復雜形(xing)(xing)(xing)(xing)(xing)(xing)(xing)狀。按b類供應的鋼(gang)管，如用(yong)(yong)(yong)于(yu)承受液體壓力(li)，也要進行水壓(特(te)指(zhi)：壓強(qiang))試驗。3、專門用(yong)(yong)(yong)途的無(wu)(wu)縫管有鍋爐(lu)用(yong)(yong)(yong)無(wu)(wu)縫管、化工電力(li)用(yong)(yong)(yong)，地(di)質用(yong)(yong)(yong)無(wu)(wu)縫鋼(gang)管及(ji)石油用(yong)(yong)(yong)無(wu)(wu)縫管等多種(zhong)。無(wu)(wu)縫鋼(gang)管具有中(zhong)空截面，大(da)量(liang)(liang)用(yong)(yong)(yong)作輸送流體的管道(dao)，如輸送石油、天然(ran)氣、煤氣、水及(ji)某些固體物(wu)料的管道(dao)等。鋼(gang)管與圓鋼(gang)等實心鋼(gang)材(cai)相(xiang)比，在(zai)抗彎抗扭強(qiang)度(du)相(xiang)同時(shi)，重量(liang)(liang)較輕，是一種(zhong)經濟截面鋼(gang)材(cai)。

　　廣(guang)(guang)泛用(yong)(yong)于制(zhi)造結構件(jian)和(he)機械零件(jian)，如石油鉆桿、汽車傳(chuan)動軸(zhou)(zhou)(傳(chuan)動軸(zhou)(zhou)組(zu)成：軸(zhou)(zhou)管(guan)、伸縮(suo)套和(he)萬向(xiang)節)、自行車架以及建筑)施工(gong)中用(yong)(yong)的鋼(gang)腳手架等(deng)用(yong)(yong)鋼(gang)管(guan)制(zhi)造環形零件(jian)，可提高材料利用(yong)(yong)率，簡化制(zhi)造工(gong)序(xu)，節約材料和(he)加工(gong)工(gong)時，已廣(guang)(guang)泛用(yong)(yong)鋼(gang)管(guan)來制(zhi)造。