T91鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)酸(suan)(suan)洗(xi)的(de)(de)(de)(de)(de)(de)(de)(de)必(bi)要性(xing)首先要了(le)解(jie)酸(suan)(suan)洗(xi)是(shi)什么：用(yong)(yong)(yong)酸(suan)(suan)性(xing)溶液(ye)(ye)除去(qu)(qu)氧(yang)化(hua)(hua)膜和(he)(he)腐(fu)蝕(shi)的(de)(de)(de)(de)(de)(de)(de)(de)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)表(biao)(biao)面(mian)(mian)稱為(wei)(wei)(wei)酸(suan)(suan)洗(xi)。T91鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)由(you)整(zheng)塊金(jin)屬制成(cheng)的(de)(de)(de)(de)(de)(de)(de)(de)，表(biao)(biao)面(mian)(mian)上沒(mei)有接縫(feng)的(de)(de)(de)(de)(de)(de)(de)(de)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)，稱為(wei)(wei)(wei)T91鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)。根據生(sheng)產(chan)(chan)方法，無(wu)(wu)(wu)(wu)縫(feng)管(guan)(guan)(guan)(guan)(guan)分(fen)熱軋(ya)管(guan)(guan)(guan)(guan)(guan)、冷軋(ya)管(guan)(guan)(guan)(guan)(guan)、冷拔(ba)管(guan)(guan)(guan)(guan)(guan)、擠壓管(guan)(guan)(guan)(guan)(guan)、頂管(guan)(guan)(guan)(guan)(guan)等(deng)(deng)。按(an)照斷面(mian)(mian)形(xing)狀(zhuang)，T91鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)分(fen)圓形(xing)和(he)(he)異(yi)形(xing)兩種，異(yi)形(xing)管(guan)(guan)(guan)(guan)(guan)有方形(xing)、橢圓形(xing)、三角形(xing)、六(liu)角形(xing)、瓜(gua)子(zi)形(xing)、星(xing)形(xing)、 帶翅管(guan)(guan)(guan)(guan)(guan)多(duo)(duo)種復雜形(xing)狀(zhuang)。最大(da)(da)直(zhi)(zhi)(zhi)(zhi)徑(jing)(jing)達650mm，最小直(zhi)(zhi)(zhi)(zhi)徑(jing)(jing)為(wei)(wei)(wei) 0.3mm。直(zhi)(zhi)(zhi)(zhi)縫(feng)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)是(shi)焊縫(feng)與鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)縱向平行的(de)(de)(de)(de)(de)(de)(de)(de)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)。通常分(fen)為(wei)(wei)(wei)公制電焊鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)、電焊薄壁管(guan)(guan)(guan)(guan)(guan)、變壓器冷卻(que)油(you)(you)管(guan)(guan)(guan)(guan)(guan)等(deng)(deng)等(deng)(deng)。直(zhi)(zhi)(zhi)(zhi)縫(feng)焊管(guan)(guan)(guan)(guan)(guan)生(sheng)產(chan)(chan)工(gong)(gong)藝(yi)簡單，生(sheng)產(chan)(chan)效率高(gao)，成(cheng)本低，發展(zhan)較(jiao)快。螺旋焊管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)(de)(de)強度一般(ban)比直(zhi)(zhi)(zhi)(zhi)縫(feng)焊管(guan)(guan)(guan)(guan)(guan)高(gao)，能(neng)(neng)用(yong)(yong)(yong)較(jiao)窄的(de)(de)(de)(de)(de)(de)(de)(de)坯料生(sheng)產(chan)(chan)管(guan)(guan)(guan)(guan)(guan)徑(jing)(jing)較(jiao)大(da)(da)的(de)(de)(de)(de)(de)(de)(de)(de)焊管(guan)(guan)(guan)(guan)(guan)，還可(ke)(ke)以用(yong)(yong)(yong)同樣寬度的(de)(de)(de)(de)(de)(de)(de)(de)坯料生(sheng)產(chan)(chan)管(guan)(guan)(guan)(guan)(guan)徑(jing)(jing)不(bu)同的(de)(de)(de)(de)(de)(de)(de)(de)焊管(guan)(guan)(guan)(guan)(guan)。酸(suan)(suan)洗(xi)有硫酸(suan)(suan)、鹽酸(suan)(suan)、磷酸(suan)(suan)、硝酸(suan)(suan)和(he)(he)混酸(suan)(suan)等(deng)(deng)。酸(suan)(suan)洗(xi)工(gong)(gong)藝(yi)是(shi)去(qu)(qu)除表(biao)(biao)面(mian)(mian)氧(yang)化(hua)(hua)皮，再進行潤滑(碳鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)-磷皂化(hua)(hua)，不(bu)銹鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)-黃油(you)(you)石(shi)灰(hui)，銅-鋁管(guan)(guan)(guan)(guan)(guan)上油(you)(you)，采(cai)用(yong)(yong)(yong)舊工(gong)(gong)藝(yi)-鍍銅)，然(ran)后(hou)進行拉拔(ba)和(he)(he)深加工(gong)(gong)。如(ru)(ru)果(guo)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)不(bu)酸(suan)(suan)洗(xi)，表(biao)(biao)面(mian)(mian)可(ke)(ke)能(neng)(neng)有氧(yang)化(hua)(hua)物和(he)(he)油(you)(you)，磷化(hua)(hua)液(ye)(ye)核能(neng)(neng)不(bu)能(neng)(neng)去(qu)(qu)除它們(men)，會降低磷化(hua)(hua)質量。而(er)(er)在(zai)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)制造過程中，經(jing)過多(duo)(duo)次(ci)加工(gong)(gong)后(hou)，如(ru)(ru)果(guo)不(bu)加注意(yi)，會在(zai)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)表(biao)(biao)面(mian)(mian)留(liu)下疤痕，從而(er)(er)降低零件的(de)(de)(de)(de)(de)(de)(de)(de)耐腐(fu)蝕(shi)性(xing)能(neng)(neng)，直(zhi)(zhi)(zhi)(zhi)接影響(xiang)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)(de)(de)使(shi)用(yong)(yong)(yong)壽(shou)命。為(wei)(wei)(wei)了(le)提高(gao)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)(de)(de)耐蝕(shi)性(xing)，延長產(chan)(chan)品的(de)(de)(de)(de)(de)(de)(de)(de)使(shi)用(yong)(yong)(yong)壽(shou)命，必(bi)須(xu)對鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)進行表(biao)(biao)面(mian)(mian)酸(suan)(suan)洗(xi)和(he)(he)鈍化(hua)(hua)處(chu)理，以便在(zai)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)表(biao)(biao)面(mian)(mian)形(xing)成(cheng)保護膜。無(wu)(wu)(wu)(wu)縫(feng)管(guan)(guan)(guan)(guan)(guan)被(bei)(bei)廣泛應(ying)(ying)用(yong)(yong)(yong)。普(pu)通T91鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)由(you)普(pu)通碳素結(jie)(jie)構(gou)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)、低合金(jin)結(jie)(jie)構(gou)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)或(huo)合金(jin)結(jie)(jie)構(gou)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)軋(ya)制而(er)(er)成(cheng)，產(chan)(chan)量最大(da)(da)，主要用(yong)(yong)(yong)作(zuo)輸送流體(ti)的(de)(de)(de)(de)(de)(de)(de)(de)管(guan)(guan)(guan)(guan)(guan)道或(huo)結(jie)(jie)構(gou)件。.2按(an)其(qi)用(yong)(yong)(yong)途有三類(lei)(lei)供(gong)應(ying)(ying)品：a，按(an)化(hua)(hua)學成(cheng)分(fen)及(ji)機械(xie)(xie)性(xing)能(neng)(neng)計算(suan);b，按(an)機械(xie)(xie)性(xing)能(neng)(neng)計算(suan);c，按(an)水力(li)(li)試驗。根據a類(lei)(lei)和(he)(he)b類(lei)(lei)供(gong)應(ying)(ying)的(de)(de)(de)(de)(de)(de)(de)(de)鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)，如(ru)(ru)果(guo)用(yong)(yong)(yong)于承受液(ye)(ye)體(ti)壓力(li)(li)，也應(ying)(ying)進行液(ye)(ye)壓試驗。3.特殊用(yong)(yong)(yong)途的(de)(de)(de)(de)(de)(de)(de)(de)無(wu)(wu)(wu)(wu)縫(feng)管(guan)(guan)(guan)(guan)(guan)種類(lei)(lei)很多(duo)(duo)，如(ru)(ru)鍋爐用(yong)(yong)(yong)無(wu)(wu)(wu)(wu)縫(feng)管(guan)(guan)(guan)(guan)(guan)、化(hua)(hua)工(gong)(gong)用(yong)(yong)(yong)無(wu)(wu)(wu)(wu)縫(feng)管(guan)(guan)(guan)(guan)(guan)、地質無(wu)(wu)(wu)(wu)縫(feng)管(guan)(guan)(guan)(guan)(guan)和(he)(he)石(shi)油(you)(you)無(wu)(wu)(wu)(wu)縫(feng)管(guan)(guan)(guan)(guan)(guan)等(deng)(deng)。無(wu)(wu)(wu)(wu)縫(feng)管(guan)(guan)(guan)(guan)(guan)具有中空(kong)的(de)(de)(de)(de)(de)(de)(de)(de)截(jie)面(mian)(mian)，被(bei)(bei)廣泛用(yong)(yong)(yong)作(zuo)輸送石(shi)油(you)(you)、天然(ran)氣、水和(he)(he)某些(xie)固體(ti)材料等(deng)(deng)流體(ti)的(de)(de)(de)(de)(de)(de)(de)(de)管(guan)(guan)(guan)(guan)(guan)道。與實心鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)(如(ru)(ru)圓鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang))相比，鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)在(zai)彎曲強度和(he)(he)扭轉強度相同的(de)(de)(de)(de)(de)(de)(de)(de)情況下，重量較(jiao)輕(qing)，是(shi)一種經(jing)濟的(de)(de)(de)(de)(de)(de)(de)(de)型鋼(gang)(gang)(gang)(gang)(gang)(gang)(gang)。