對于生產出第一根無縫香蕉視頻app免費下載:不銹鋼管的(de)(de)美國(guo)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)工(gong)(gong)(gong)廠有兩種說法，即Kellogg 廠或(huo)Shelby 廠。J.P.Boore 在《The Seamless Story》一書中這(zhe)樣(yang)(yang)寫道：“雖然第一根具有商品(pin)價值的(de)(de)無(wu)(wu)縫不銹鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)是(shi)(shi)(shi)Ohio,Shelby Tube公司（廠）在1891年生(sheng)產(chan)(chan)的(de)(de)，但(dan)Kellogg公司（廠）確實在這(zhe)之(zhi)前(qian)已經生(sheng)產(chan)(chan)了(le)(le)無(wu)(wu)縫不銹鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)，其軋(ya)制工(gong)(gong)(gong)藝是(shi)(shi)(shi)W.H.Heckert發(fa)明的(de)(de)。生(sheng)產(chan)(chan)過程(cheng)的(de)(de)主要問題在于氧化鐵皮和其他(ta)雜(za)物(wu)嵌入鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)表面，因此(ci)從商品(pin)生(sheng)產(chan)(chan)的(de)(de)角度(du)來講這(zhe)一工(gong)(gong)(gong)藝未獲成功”。從無(wu)(wu)縫不銹鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)生(sheng)產(chan)(chan)技(ji)術發(fa)展史(shi)的(de)(de)角度(du)來看，感(gan)興趣的(de)(de)不僅是(shi)(shi)(shi)哪一個廠生(sheng)產(chan)(chan)了(le)(le)“第一根”，而是(shi)(shi)(shi)采(cai)(cai)用什么工(gong)(gong)(gong)藝生(sheng)產(chan)(chan)的(de)(de)。具體說就是(shi)(shi)(shi)空(kong)(kong)心(xin)(xin)坯是(shi)(shi)(shi)怎樣(yang)(yang)生(sheng)產(chan)(chan)的(de)(de)？又(you)是(shi)(shi)(shi)怎樣(yang)(yang)延伸的(de)(de)？因為(wei)在大批(pi)量(liang)工(gong)(gong)(gong)業(ye)生(sheng)產(chan)(chan)無(wu)(wu)縫鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)之(zhi)前(qian)已有很多小批(pi)量(liang)生(sheng)產(chan)(chan)的(de)(de)辦(ban)法，當時(shi) Shelby廠采(cai)(cai)用什么工(gong)(gong)(gong)藝生(sheng)產(chan)(chan)的(de)(de)呢？空(kong)(kong)心(xin)(xin)坯是(shi)(shi)(shi)從瑞典進(jin)口，沖孔坯直(zhi)徑3英(ying)(ying)寸，孔徑2英(ying)(ying)寸，長度(du)為(wei)18英(ying)(ying)尺，加熱后(hou)在兩重式軋(ya)機(ji)上延伸，該軋(ya)機(ji)由蒸(zheng)汽機(ji)驅動(dong)，班產(chan)(chan)60根管(guan)(guan)(guan)（10小時(shi)一班）。Kellogg廠采(cai)(cai)用的(de)(de)3H+2V的(de)(de)連(lian)續軋(ya)管(guan)(guan)(guan)工(gong)(gong)(gong)藝，可謂(wei)創連(lian)續軋(ya)管(guan)(guan)(guan)之(zhi)先(xian)。空(kong)(kong)心(xin)(xin)坯是(shi)(shi)(shi)本(ben)廠澆鑄(zhu)的(de)(de)鑄(zhu)鋼(gang)(gang)(gang)(gang)空(kong)(kong)心(xin)(xin)坯，尺寸為(wei)：長3.5英(ying)(ying)尺，內徑4~5英(ying)(ying)寸，壁厚約(yue)3/4英(ying)(ying)寸。

  早(zao)(zao)期的(de)(de)三位連(lian)軋(ya)(ya)(ya)管(guan)工(gong)藝大(da)師是指 Kellogg、Heckert 和(he) Fassl,關(guan)于(yu)Kellogg和(he)Heckert在(zai)前(qian)面已作了(le)介紹，Fassl為早(zao)(zao)期三位工(gong)藝大(da)師之一，1900年(nian)當穿(chuan)孔(kong)機(ji)(ji)的(de)(de)專利有效期滿后(hou)，他(ta)為Thyssen設計了(le)第一臺斜軋(ya)(ya)(ya)穿(chuan)孔(kong)機(ji)(ji)，同時他(ta)設計了(le)一臺12機(ji)(ji)架(jia)的(de)(de)兩輥式鋼管(guan)連(lian)軋(ya)(ya)(ya)機(ji)(ji)，后(hou)來人們稱(cheng)它為Fassl軋(ya)(ya)(ya)管(guan)機(ji)(ji)，1901年(nian)這(zhe)(zhe)臺由蒸汽機(ji)(ji)驅動(dong)的(de)(de)連(lian)軋(ya)(ya)(ya)管(guan)機(ji)(ji)在(zai)德(de)國Dinslaken投產，采用全浮動(dong)芯棒連(lian)軋(ya)(ya)(ya)工(gong)藝原(yuan)理(li)，熱軋(ya)(ya)(ya)不銹(xiu)管(guan)的(de)(de)長度可(ke)達8~10m,1904~1907年(nian)間，又建造了(le)三套(tao)這(zhe)(zhe)樣(yang)的(de)(de)軋(ya)(ya)(ya)管(guan)機(ji)(ji)。美國第(di)一臺用于(yu)Monessen廠(chang)的連(lian)軋不銹(xiu)鋼(gang)管(guan)機(ji)(ji)(ji)，是由(you)德國人(ren)(ren)仿(fang)Fassl軋機(ji)(ji)(ji)設計的，Fassl軋機(ji)(ji)(ji)代(dai)表了從試驗軋機(ji)(ji)(ji)向生產軋機(ji)(ji)(ji)的轉(zhuan)變，所以Biller博士將Fassl列為(wei)對連(lian)續軋不銹(xiu)鋼(gang)管(guan)機(ji)(ji)(ji)的發展作出重大貢獻的三(san)個人(ren)(ren)中的第(di)一人(ren)(ren)。