無(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)是由整支圓鋼(gang)(gang)穿孔(kong)而成的(de)(de)，表面上(shang)沒有(you)(you)焊縫(feng)(feng)(feng)的(de)(de)鋼(gang)(gang)管(guan)(guan)(guan)(guan)，稱之為無(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)。根(gen)(gen)據生產方法(fa)，無(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)可分熱軋(ya)(ya)無(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)、冷軋(ya)(ya)無(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)、冷拔無(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)、擠壓無(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)、頂(ding)管(guan)(guan)(guan)(guan)等。按照斷面形(xing)(xing)(xing)狀(zhuang)，無(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)分圓形(xing)(xing)(xing)和異(yi)形(xing)(xing)(xing)兩(liang)種，異(yi)形(xing)(xing)(xing)管(guan)(guan)(guan)(guan)有(you)(you)方形(xing)(xing)(xing)、橢(tuo)圓形(xing)(xing)(xing)、三(san)角(jiao)形(xing)(xing)(xing)、六角(jiao)形(xing)(xing)(xing)、瓜子形(xing)(xing)(xing)、星形(xing)(xing)(xing)、 帶翅管(guan)(guan)(guan)(guan)多種復雜形(xing)(xing)(xing)狀(zhuang)。大(da)直(zhi)徑達900mm，小直(zhi)徑為 4mm。根(gen)(gen)據用(yong)途不(bu)同， 有(you)(you)厚壁無(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)和薄壁無(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)。無(wu)(wu)(wu)(wu)縫(feng)(feng)(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)主要用(yong)做石(shi)油地質鉆探管(guan)(guan)(guan)(guan)、石(shi)油化工用(yong)的(de)(de)裂化管(guan)(guan)(guan)(guan)、鍋 爐管(guan)(guan)(guan)(guan)、軸承管(guan)(guan)(guan)(guan)以及汽(qi)車、拖拉機、航空用(yong)高(gao)精度結構(gou)鋼(gang)(gang)管(guan)(guan)(guan)(guan)。

分類

沿(yan)其橫截面的周邊(bian)上無接縫(feng)的鋼管(guan)。根據(ju)生產方法不同(tong)分(fen)為熱軋管(guan)、冷(leng)軋管(guan)、冷(leng)拔管(guan)、擠壓管(guan)、頂(ding)管(guan)等，均有各自工藝(yi)規定。

材質有普通和(he)優(you)質碳素結(jie)構鋼（Q215-A～Q275-A和(he)10～50號鋼）、低合(he)金鋼（09MnV、16Mn等）、合(he)金鋼、不(bu)銹(xiu)耐(nai)酸鋼等。

按用(yong)途分為一般用(yong)途的（用(yong)于輸水、氣管道和結構件、機械零件）和專用(yong)的（用(yong)于鍋爐、地質勘探、軸(zhou)承、耐酸等）兩(liang)類。

用途

無縫鋼管

無縫鋼管

無縫鋼管用途很廣泛。

1、一般用途(tu)的(de)無(wu)縫(feng)鋼(gang)管(guan)(guan)由普通(tong)的(de)碳素結(jie)構(gou)(gou)鋼(gang)、低合金結(jie)構(gou)(gou)鋼(gang)或合金結(jie)構(gou)(gou)鋼(gang)軋制(zhi)，產量(liang)多，主(zhu)要用作輸送流體的(de)管(guan)(guan)道或結(jie)構(gou)(gou)零件。

2、根據(ju)用途不同分三類(lei)供(gong)應：

a、按化(hua)學成分和機械性能(neng)供應；

b、按機械(xie)性(xing)能供(gong)應；

c、按(an)(an)水壓試(shi)驗(yan)供應。按(an)(an)a、b類供應的(de)鋼管(guan)，如用于承(cheng)受(shou)液體壓力，也要(yao)進行(xing)水壓試(shi)驗(yan)。

3、專門用(yong)途的無縫(feng)(feng)管(guan)(guan)有鍋爐用(yong)無縫(feng)(feng)管(guan)(guan)、化(hua)工電力用(yong)，地(di)質用(yong)無縫(feng)(feng)鋼管(guan)(guan)及(ji)石油用(yong)無縫(feng)(feng)管(guan)(guan)等多種。

無縫鋼管具有中空截面，大量(liang)用(yong)作輸(shu)送(song)流(liu)體的(de)(de)管道(dao)(dao)，如輸(shu)送(song)石油、天(tian)然氣、煤氣、水及某些固體物(wu)料的(de)(de)管道(dao)(dao)等(deng)。鋼管與圓(yuan)鋼等(deng)實心鋼材相(xiang)比，在抗(kang)彎抗(kang)扭強度相(xiang)同時，重量(liang)較輕，是一種經濟(ji)截面鋼材。

廣(guang)(guang)泛(fan)用于制(zhi)造結構(gou)件和機械零件，如石油(you)鉆(zhan)桿、汽車傳動(dong)軸、自行車架以及建筑施工(gong)中用的(de)鋼(gang)腳手(shou)架等用鋼(gang)管制(zhi)造環形零件，可提高材(cai)料(liao)利用率(lv)，簡化(hua)制(zhi)造工(gong)序(xu)，節約材(cai)料(liao)和加工(gong)工(gong)時，已廣(guang)(guang)泛(fan)用鋼(gang)管來制(zhi)造。