3087鍋爐管全(quan)稱(cheng)叫做GB3087-2008，又叫低(di)中(zhong)(zhong)(zhong)壓鍋(guo)(guo)(guo)爐用(yong)無縫(feng)(feng)管(guan)(GB3087-2008)是(shi)用(yong)于(yu)制造各種(zhong)結(jie)構低(di)中(zhong)(zhong)(zhong)壓鍋(guo)(guo)(guo)爐過熱(re)蒸(zheng)汽管(guan)、沸水(shui)管(guan)及機車鍋(guo)(guo)(guo)爐用(yong)過熱(re)蒸(zheng)汽管(guan)、大煙管(guan)、小(xiao)煙管(guan)和(he)拱磚管(guan)用(yong)的(de)(de)優質(zhi)(zhi)碳素結(jie)構鋼(gang)熱(re)軋和(he)冷拔(軋)無縫(feng)(feng)管(guan)。 GB3087-2008《低(di)中(zhong)(zhong)(zhong)壓鍋(guo)(guo)(guo)爐用(yong)無縫(feng)(feng)鋼(gang)管(guan)》規定。各種(zhong)結(jie)構鍋(guo)(guo)(guo)爐用(yong)鋼(gang)管(guan)規格，外徑10～426mm，共計(ji)43種(zhong)。壁厚(hou)1.5～26mm共計(ji)29種(zhong)。GB3087-2008《低(di)中(zhong)(zhong)(zhong)壓鍋(guo)(guo)(guo)爐用(yong)無縫(feng)(feng)鋼(gang)管(guan)》和(he)GB5310-2008《高壓鍋(guo)(guo)(guo)爐用(yong)無縫(feng)(feng)鋼(gang)管(guan)》的(de)(de)規定。外觀(guan)質(zhi)(zhi)量：鋼(gang)管(guan)內(nei)外表面(mian)不(bu)允(yun)許有裂(lie)縫(feng)(feng)、折疊、軋折、結(jie)疤(ba)、離層(ceng)和(he)發(fa)紋。這些(xie)缺(que)陷(xian)應完(wan)全(quan)清除(chu)掉。清除(chu)深度(du)不(bu)得(de)超(chao)過公稱(cheng)壁厚(hou)的(de)(de)負(fu)偏差，其清理處實際(ji)壁厚(hou)不(bu)得(de)小(xiao)于(yu)壁厚(hou)所允(yun)許的(de)(de)最小(xiao)值(zhi)。 

　　據不完全統計(ji)，我國現有無(wu)縫管(guan)(guan)生產企業約(yue)240多(duo)家，無(wu)縫鋼管(guan)(guan)機組約(yue)250多(duo)套，年(nian)產能力約(yue)450多(duo)萬噸(dun)(dun)。從口徑看(kan)，<φ76的(de)，占35%，<φ159-650的(de)，占25%。從品種看(kan)，一般用(yong)途管(guan)(guan)190萬噸(dun)(dun)，占54%;石油管(guan)(guan)76萬噸(dun)(dun)，占5.7%;液(ye)壓支柱、精密管(guan)(guan)15萬噸(dun)(dun)，占4.3%;不銹(xiu)管(guan)(guan)、軸承管(guan)(guan)、汽車(che)管(guan)(guan)共(gong)5萬噸(dun)(dun)，占1.4%。

　　鋼(gang)(gang)坯被送入(ru)熔爐內(nei)加熱，溫度(du)大約為1200℃。燃料為氫(qing)氣(qi)或乙炔。爐內(nei)溫度(du)控制(zhi)是關鍵(jian)性的問(wen)題.圓(yuan)管(guan)(guan)坯出(chu)爐后要(yao)經過(guo)壓(ya)力穿(chuan)孔機(ji)進(jin)行(xing)穿(chuan)空。一般(ban)較常見的穿(chuan)孔機(ji)是錐形輥穿(chuan)孔機(ji)，這種(zhong)(zhong)穿(chuan)孔機(ji)生產(chan)效率高(gao)，產(chan)品質(zhi)量(liang)好，穿(chuan)孔擴徑量(liang)大，可穿(chuan)多種(zhong)(zhong)鋼(gang)(gang)種(zhong)(zhong)。穿(chuan)孔后，圓(yuan)管(guan)(guan)坯就先(xian)后被三輥斜(xie)軋(ya)、連軋(ya)或擠壓(ya)。擠壓(ya)后要(yao)脫(tuo)管(guan)(guan)定(ding)(ding)徑。定(ding)(ding)徑機(ji)通過(guo)錐形鉆頭(tou)高(gao)速旋轉(zhuan)入(ru)鋼(gang)(gang)胚(pei)打孔，形成鋼(gang)(gang)管(guan)(guan)。鋼(gang)(gang)管(guan)(guan)內(nei)徑由(you)定(ding)(ding)徑機(ji)鉆頭(tou)的外徑長度(du)來(lai)確(que)定(ding)(ding)。鋼(gang)(gang)管(guan)(guan)經定(ding)(ding)徑后，進(jin)入(ru)冷卻塔中，通過(guo)噴水冷卻，鋼(gang)(gang)管(guan)(guan)經冷卻后，就要(yao)被矯直(zhi)。鋼(gang)(gang)管(guan)(guan)經矯直(zhi)后由(you)傳送帶送至(zhi)金屬探傷機(ji)(或水壓(ya)實驗)進(jin)行(xing)內(nei)部(bu)探傷。若鋼(gang)(gang)管(guan)(guan)內(nei)部(bu)有(you)裂紋(wen)，氣(qi)泡等問(wen)題，將被探測(ce)出(chu)。鋼(gang)(gang)管(guan)(guan)質(zhi)檢后還要(yao)通過(guo)嚴格的手工挑選。鋼(gang)(gang)管(guan)(guan)質(zhi)檢后，用油漆噴上編號、規格、生產(chan)批號等。并(bing)由(you)吊車吊入(ru)倉(cang)庫中。

　　規格(ge)：無縫鋼管的規格(ge)用(yong)外徑*壁厚(hou)毫米數(shu)表示。