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)不同分(fen)三類供應：
A、按(an)化學成分和機(ji)械性能供應;
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#無縫鋼管的化學成分有碳C、硅Si、錳(meng)Mn、硫(liu)S、磷P、鉻Cr。GB5310無(wu)縫(feng)(feng)鋼管(guan)(guan)(guan)按照用(yong)途(tu)分為結構(gou)用(yong)無(wu)縫(feng)(feng)鋼管(guan)(guan)(guan);輸送用(yong)無(wu)縫(feng)(feng)鋼管(guan)(guan)(guan);鍋(guo)爐用(yong)無(wu)縫(feng)(feng)鋼管(guan)(guan)(guan);鍋(guo)爐用(yong)高壓無(wu)縫(feng)(feng)鋼管(guan)(guan)(guan)、無(wu)縫(feng)(feng)鋼管(guan)(guan)(guan)按照斷面形(xing)(xing)(xing)(xing)狀(zhuang)(zhuang)，無(wu)縫(feng)(feng)鋼管(guan)(guan)(guan)分圓形(xing)(xing)(xing)(xing)和(he)異(yi)形(xing)(xing)(xing)(xing)兩種(zhong)(zhong)，異(yi)形(xing)(xing)(xing)(xing)管(guan)(guan)(guan)有方形(xing)(xing)(xing)(xing)、橢圓形(xing)(xing)(xing)(xing)、三角形(xing)(xing)(xing)(xing)、六角形(xing)(xing)(xing)(xing)、瓜(gua)子(zi)形(xing)(xing)(xing)(xing)、星(xing)形(xing)(xing)(xing)(xing)、帶翅管(guan)(guan)(guan)多(duo)種(zhong)(zhong)復雜形(xing)(xing)(xing)(xing)狀(zhuang)(zhuang)。按b類(lei)供應的(de)(de)(de)鋼(gang)管(guan)(guan)，如(ru)用(yong)于承(cheng)受液體壓(ya)力(li)，也要進行(xing)水(shui)壓(ya)(特指(zhi)：壓(ya)強(qiang))試驗。3、專(zhuan)門用(yong)途(tu)的(de)(de)(de)無(wu)縫(feng)管(guan)(guan)有鍋爐(lu)用(yong)無(wu)縫(feng)管(guan)(guan)、化工電力(li)用(yong)，地質(zhi)用(yong)無(wu)縫(feng)鋼(gang)管(guan)(guan)及石油用(yong)無(wu)縫(feng)管(guan)(guan)等多種。無(wu)縫(feng)鋼(gang)管(guan)(guan)具有中(zhong)空截面，大量用(yong)作輸送(song)流體的(de)(de)(de)管(guan)(guan)道，如(ru)輸送(song)石油、天然氣(qi)、煤氣(qi)、水(shui)及某些(xie)固體物料的(de)(de)(de)管(guan)(guan)道等。鋼(gang)管(guan)(guan)與圓鋼(gang)等實心鋼(gang)材相(xiang)比，在抗彎抗扭強(qiang)度相(xiang)同時，重量較輕(qing)，是一種經濟截面鋼(gang)材。
廣(guang)泛用(yong)于制(zhi)(zhi)造(zao)結構件(jian)(jian)(jian)和機(ji)械零(ling)件(jian)(jian)(jian)，如石油(you)鉆(zhan)桿、汽車(che)傳(chuan)動(dong)軸(傳(chuan)動(dong)軸組成：軸管、伸(shen)縮(suo)套和萬向節)、自行車(che)架(jia)以及建筑)施(shi)工(gong)中用(yong)的鋼腳手架(jia)等用(yong)鋼管制(zhi)(zhi)造(zao)環形(xing)零(ling)件(jian)(jian)(jian)，可提(ti)高(gao)材(cai)料利用(yong)率，簡化制(zhi)(zhi)造(zao)工(gong)序(xu)，節約材(cai)料和加工(gong)工(gong)時，已(yi)廣(guang)泛用(yong)鋼管來制(zhi)(zhi)造(zao)。
