無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)—分(fen)(fen)類及(ji)其(qi)用(yong)(yong)(yong)(yong)(yong)(yong)途(tu)(tu)是(shi)(shi)一(yi)種(zhong)具(ju)有(you)(you)中(zhong)(zhong)空(kong)截面(mian)(mian)(mian)、周邊沒有(you)(you)接縫(feng)(feng)的(de)(de)(de)(de)(de)長(chang)條(tiao)鋼(gang)(gang)(gang)(gang)(gang)材。鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)具(ju)有(you)(you)中(zhong)(zhong)空(kong)截面(mian)(mian)(mian)，大(da)量(liang)(liang)用(yong)(yong)(yong)(yong)(yong)(yong)作(zuo)輸(shu)(shu)(shu)送(song)流(liu)體(ti)的(de)(de)(de)(de)(de)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)道，如輸(shu)(shu)(shu)送(song)石(shi)(shi)(shi)油(you)(you)、天(tian)然氣、煤氣、水及(ji)某些固體(ti)物料(liao)的(de)(de)(de)(de)(de)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)道等(deng)(deng)。鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)與(yu)圓鋼(gang)(gang)(gang)(gang)(gang)等(deng)(deng)實(shi)心鋼(gang)(gang)(gang)(gang)(gang)材相比，在(zai)抗(kang)彎抗(kang)扭強度(du)(du)相同時，重(zhong)量(liang)(liang)較(jiao)輕，是(shi)(shi)一(yi)種(zhong)經濟截面(mian)(mian)(mian)鋼(gang)(gang)(gang)(gang)(gang)材，廣(guang)泛用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)(yu)(yu)制(zhi)(zhi)造結(jie)構件(jian)和(he)機械零件(jian)，如石(shi)(shi)(shi)油(you)(you)鉆桿、汽車傳動軸(zhou)、自行車架以(yi)及(ji)建筑(zhu)施工(gong)中(zhong)(zhong)用(yong)(yong)(yong)(yong)(yong)(yong)的(de)(de)(de)(de)(de)鋼(gang)(gang)(gang)(gang)(gang)腳手架等(deng)(deng)。用(yong)(yong)(yong)(yong)(yong)(yong)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)制(zhi)(zhi)造環形(xing)(xing)(xing)(xing)零件(jian)，可(ke)(ke)提(ti)高(gao)材料(liao)利(li)用(yong)(yong)(yong)(yong)(yong)(yong)率，簡化制(zhi)(zhi)造工(gong)序，節約材料(liao)和(he)加工(gong)工(gong)時，如滾(gun)動軸(zhou)承套(tao)(tao)圈(quan)、千斤頂(ding)套(tao)(tao)等(deng)(deng)，目前(qian)(qian)已(yi)廣(guang)泛用(yong)(yong)(yong)(yong)(yong)(yong)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)來制(zhi)(zhi)造。鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)還(huan)是(shi)(shi)各種(zhong)常(chang)規(gui)武器不(bu)可(ke)(ke)缺少(shao)的(de)(de)(de)(de)(de)材料(liao)，槍管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、炮筒等(deng)(deng)都(dou)要(yao)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)來制(zhi)(zhi)造。鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)按(an)橫截面(mian)(mian)(mian)積(ji)(ji)形(xing)(xing)(xing)(xing)狀(zhuang)的(de)(de)(de)(de)(de)不(bu)同可(ke)(ke)分(fen)(fen)為(wei)(wei)圓管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)和(he)異型管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)。由于(yu)(yu)(yu)在(zai)周長(chang)相等(deng)(deng)的(de)(de)(de)(de)(de)條(tiao)件(jian)下(xia)，圓面(mian)(mian)(mian)積(ji)(ji)，用(yong)(yong)(yong)(yong)(yong)(yong)圓形(xing)(xing)(xing)(xing)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)可(ke)(ke)以(yi)輸(shu)(shu)(shu)送(song)更多的(de)(de)(de)(de)(de)流(liu)體(ti)。此外(wai)，圓環截面(mian)(mian)(mian)在(zai)承受(shou)(shou)內部(bu)(bu)或(huo)外(wai)部(bu)(bu)徑向壓(ya)(ya)力(li)時，受(shou)(shou)力(li)較(jiao)均勻，因此，絕大(da)多數鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)是(shi)(shi)圓管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)。但是(shi)(shi)，圓管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)也有(you)(you)一(yi)定的(de)(de)(de)(de)(de)局限(xian)性(xing)，如在(zai)受(shou)(shou)平(ping)面(mian)(mian)(mian)彎曲的(de)(de)(de)(de)(de)條(tiao)件(jian)下(xia)，圓管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)就(jiu)不(bu)如方、矩形(xing)(xing)(xing)(xing)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)抗(kang)彎強度(du)(du)大(da)，一(yi)些農(nong)機具(ju)骨架、鋼(gang)(gang)(gang)(gang)(gang)木家具(ju)等(deng)(deng)就(jiu)常(chang)用(yong)(yong)(yong)(yong)(yong)(yong)方、矩形(xing)(xing)(xing)(xing)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)。根據(ju)不(bu)同用(yong)(yong)(yong)(yong)(yong)(yong)途(tu)(tu)還(huan)需有(you)(you)其(qi)他截面(mian)(mian)(mian)形(xing)(xing)(xing)(xing)狀(zhuang)的(de)(de)(de)(de)(de)異型鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)。目前(qian)(qian)，全(quan)世界生產(chan)(chan)(chan)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)共(gong)計有(you)(you)110多個的(de)(de)(de)(de)(de)1850多個公(gong)司下(xia)的(de)(de)(de)(de)(de)5100多個生產(chan)(chan)(chan)廠，其(qi)中(zhong)(zhong)生產(chan)(chan)(chan)石(shi)(shi)(shi)油(you)(you)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)有(you)(you)44個的(de)(de)(de)(de)(de)170多個公(gong)司下(xia)的(de)(de)(de)(de)(de)260多個廠。2000年，無(wu)縫(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)全(quan)國(guo)表(biao)觀(guan)消費(fei)量(liang)(liang)為(wei)(wei)418.0萬噸，其(qi)中(zhong)(zhong)國(guo)內供應量(liang)(liang)的(de)(de)(de)(de)(de)382.1萬噸，占國(guo)內總(zong)需求(qiu)的(de)(de)(de)(de)(de)91.4%。進(jin)(jin)口為(wei)(wei)35.9萬噸，占國(guo)內總(zong)需求(qiu)的(de)(de)(de)(de)(de)8.59%。同年石(shi)(shi)(shi)油(you)(you)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)消費(fei)量(liang)(liang)大(da)約為(wei)(wei)91萬噸。進(jin)(jin)口約25.2萬噸。進(jin)(jin)口管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)占國(guo)內總(zong)消費(fei)量(liang)(liang)的(de)(de)(de)(de)(de)大(da)約70%，其(qi)中(zhong)(zhong)進(jin)(jin)口管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)占國(guo)內總(zong)消費(fei)量(liang)(liang)的(de)(de)(de)(de)(de)27.69%，石(shi)(shi)(shi)油(you)(you)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)進(jin)(jin)口量(liang)(liang)約占無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)總(zong)進(jin)(jin)口量(liang)(liang)的(de)(de)(de)(de)(de)大(da)約70%。從日本(ben)進(jin)(jin)口的(de)(de)(de)(de)(de)石(shi)(shi)(shi)油(you)(you)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)占總(zong)進(jin)(jin)口量(liang)(liang)一(yi)半以(yi)上。中(zhong)(zhong)國(guo)的(de)(de)(de)(de)(de)石(shi)(shi)(shi)油(you)(you)套(tao)(tao)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)生產(chan)(chan)(chan)基地——天(tian)津鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)公(gong)司2000年的(de)(de)(de)(de)(de)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)產(chan)(chan)(chan)品(pin)出(chu)來為(wei)(wei)52.20萬噸，其(qi)中(zhong)(zhong)石(shi)(shi)(shi)油(you)(you)套(tao)(tao)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)產(chan)(chan)(chan)量(liang)(liang)為(wei)(wei)36.41萬噸。套(tao)(tao)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)占全(quan)國(guo)石(shi)(shi)(shi)油(you)(you)產(chan)(chan)(chan)量(liang)(liang)的(de)(de)(de)(de)(de)一(yi)半以(yi)上。在(zai)產(chan)(chan)(chan)量(liang)(liang)和(he)銷售量(liang)(liang)上都(dou)占中(zhong)(zhong)國(guo)套(tao)(tao)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)市場(chang)的(de)(de)(de)(de)(de)位。從國(guo)際和(he)國(guo)內兩(liang)個市場(chang)來看，無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)（包括石(shi)(shi)(shi)油(you)(you)專用(yong)(yong)(yong)(yong)(yong)(yong)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)）的(de)(de)(de)(de)(de)現有(you)(you)生產(chan)(chan)(chan)能力(li)均已(yi)大(da)于(yu)(yu)(yu)需求(qiu)。所以(yi)，今后的(de)(de)(de)(de)(de)重(zhong)點應放在(zai)充分(fen)(fen)發揮現有(you)(you)機組的(de)(de)(de)(de)(de)能力(li)，開發出(chu)高(gao)強度(du)(du)等(deng)(deng)級、高(gao)抗(kang)擊毀(hui)、高(gao)抗(kang)腐(fu)蝕的(de)(de)(de)(de)(de)石(shi)(shi)(shi)油(you)(you)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、高(gao)壓(ya)(ya)鍋爐管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)和(he)氣瓶(ping)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)等(deng)(deng)產(chan)(chan)(chan)品(pin)。也是(shi)(shi)針(zhen)對(dui)當前(qian)(qian)我國(guo)鋼(gang)(gang)(gang)(gang)(gang)鐵市場(chang)進(jin)(jin)行優化產(chan)(chan)(chan)品(pin)結(jie)構的(de)(de)(de)(de)(de)內容。這也是(shi)(shi)增加在(zai)國(guo)內外(wai)產(chan)(chan)(chan)品(pin)競爭力(li)、擴大(da)市場(chang)份(fen)額的(de)(de)(de)(de)(de)關鍵所在(zai)。就(jiu)是(shi)(shi)說，提(ti)高(gao)國(guo)內鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)企(qi)業的(de)(de)(de)(de)(de)市場(chang)競爭力(li)是(shi)(shi)加和(he)WTO以(yi)后國(guo)內企(qi)業長(chang)期(qi)的(de)(de)(de)(de)(de)任(ren)務和(he)成功(gong)發展的(de)(de)(de)(de)(de)關鍵。1、分(fen)(fen)類無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)因其(qi)制(zhi)(zhi)造工(gong)藝不(bu)同，又(you)分(fen)(fen)為(wei)(wei)熱軋（擠(ji)壓(ya)(ya)）無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)和(he)冷拔（軋）無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)兩(liang)種(zhong)。冷拔（軋）管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)又(you)分(fen)(fen)為(wei)(wei)圓形(xing)(xing)(xing)(xing)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)和(he)異形(xing)(xing)(xing)(xing)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)兩(liang)種(zhong)。無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)，又(you)因其(qi)用(yong)(yong)(yong)(yong)(yong)(yong)途(tu)(tu)不(bu)同而分(fen)(fen)為(wei)(wei)如下(xia)若干品(pin)種(zhong)：1.GB/T8162-1999（結(jie)構用(yong)(yong)(yong)(yong)(yong)(yong)無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)）。主要(yao)用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)(yu)(yu)一(yi)般結(jie)構和(he)機械結(jie)構。其(qi)代表(biao)材質(zhi)（牌號(hao)）：碳(tan)素鋼(gang)(gang)(gang)(gang)(gang)、20、45號(hao)鋼(gang)(gang)(gang)(gang)(gang)；合金(jin)鋼(gang)(gang)(gang)(gang)(gang)Q345、20Cr、40Cr、20CrMo、30-35CrMo、42CrMo等(deng)(deng)。2.GB/T8163-1999（輸(shu)(shu)(shu)送(song)流(liu)體(ti)用(yong)(yong)(yong)(yong)(yong)(yong)無(wu)縫(feng)(feng)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)）。主要(yao)用(yong)(yong)(yong)(yong)(yong)(yong)于(yu)(yu)(yu)工(gong)程及(ji)大(da)型設備上輸(shu)(shu)(shu)送(song)流(liu)體(ti)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)道。代表(biao)材質(zhi)（牌號(hao)）為(wei)(wei)20、Q345等(deng)(deng)。下(xia)載文檔原(yuan)(yuan)格(ge)式(shi)(PDF原(yuan)(yuan)格(ge)式(shi)，共(gong)3頁)
