聊城萬華管業有限公司電話:13863577835復合鋼管廠研發生產的不銹鋼復合管具有以下優點:1.不生垢、不結瘤、耐腐蝕在鋼管內復合薄壁不銹鋼管,不銹鋼管的材質為“GB12771-2000流體輸送用不銹鋼焊接鋼管”規定的0Cr18Ni9(美國標準為AISI304),由于鋼中含有18%的鉻,在使用過程中管道內壁形成一層極薄的氧化鉻薄膜,該薄膜阻止金屬繼續氧化,故不銹鋼有很強的耐腐蝕性能,不僅能承受水和空氣的腐蝕,而且可以承受弱酸弱堿的腐蝕。外復不銹鋼管的厚度有0.4-1.2毫米,而鍍鋅鋼管的鍍鋅層厚度僅為0.07毫米,厚度相差5.7-17倍,不銹鋼的耐腐蝕性和致密性又強于鍍鋅鋼管鍍鋅層。所以,內襯不銹鋼復合鋼管在使用過程中不用擔心因內壁銹蝕產生結垢、結瘤而使內孔縮小。
3 .可(ke)(ke)以焊(han)(han)(han)(han)接 3.1內襯不(bu)銹(xiu)鋼(gang)復(fu)合鋼(gang)管之間可(ke)(ke)以采(cai)(cai)用(yong)(yong)(yong)焊(han)(han)(han)(han)接。焊(han)(han)(han)(han)接工藝可(ke)(ke)參照GB/T13148-1991“不(bu)銹(xiu)鋼(gang)復(fu)合鋼(gang)板焊(han)(han)(han)(han)接技術條(tiao)件”。3.3 焊(han)(han)(han)(han)前應采(cai)(cai)用(yong)(yong)(yong)機械方法及有機溶劑,清除焊(han)(han)(han)(han)縫表(biao)面和焊(han)(han)(han)(han)接坡口兩(liang)側至(zhi)少各20mm范圍內的油污、銹(xiu)跡、金屬屑(xie)、氧化(hua)膜及其他污物。3.4 焊(han)(han)(han)(han)條(tiao)采(cai)(cai)用(yong)(yong)(yong)GB/T983 “不(bu)銹(xiu)鋼(gang)焊(han)(han)(han)(han)條(tiao)”規(gui)定的A302(E309)焊(han)(han)(han)(han)條(tiao)規(gui)格為Φ3.2. 3.5 焊(han)(han)(han)(han)接方法推薦(jian)采(cai)(cai)用(yong)(yong)(yong)手(shou)工電(dian)弧(hu)焊(han)(han)(han)(han);對要求(qiu)較高的焊(han)(han)(han)(han)縫可(ke)(ke)以采(cai)(cai)用(yong)(yong)(yong)鎢(wu)極氬弧(hu)焊(han)(han)(han)(han)打(da)底,在接近碳鋼(gang)部位用(yong)(yong)(yong)手(shou)工電(dian)弧(hu)焊(han)(han)(han)(han),或(huo)者全部采(cai)(cai)用(yong)(yong)(yong)鎢(wu)極氬弧(hu)焊(han)(han)(han)(han)。采(cai)(cai)用(yong)(yong)(yong)鎢(wu)極氬弧(hu)焊(han)(han)(han)(han)時,焊(han)(han)(han)(han)絲采(cai)(cai)用(yong)(yong)(yong)同(tong)E309相同(tong)成(cheng)分的A302焊(han)(han)(han)(han)絲。