螺旋管(guan)及(ji)其(qi)標(biao)準分類：承壓(ya)(ya)流(liu)體(ti)輸(shu)送用(yong)螺旋縫(feng)埋弧焊(han)(han)(han)(han)(han)鋼管(guan)(SY 5 0 3 6-8 3)主(zhu)要用(yong)于(yu)(yu)輸(shu)送石油(you)、天(tian)然氣的管(guan)線;承壓(ya)(ya)流(liu)體(ti)輸(shu)送用(yong)螺旋縫(feng)高(gao)頻焊(han)(han)(han)(han)(han)鋼管(guan)(SY5 0 3 8-8 3)，用(yong)高(gao)頻搭接(jie)(jie)焊(han)(han)(han)(han)(han)法焊(han)(han)(han)(han)(han)接(jie)(jie)的，用(yong)于(yu)(yu)承壓(ya)(ya)流(liu)體(ti)輸(shu)送的螺旋縫(feng)高(gao)頻焊(han)(han)(han)(han)(han)鋼管(guan)。鋼管(guan)承壓(ya)(ya)能(neng)力(li)強，塑性(xing)好，便于(yu)(yu)焊(han)(han)(han)(han)(han)接(jie)(jie)和加(jia)工(gong)成(cheng)型;一(yi)般低壓(ya)(ya)流(liu)體(ti)輸(shu)送用(yong)螺旋縫(feng)埋弧焊(han)(han)(han)(han)(han)鋼管(guan)(SY5 0 3 7-8 3)，采用(yong)雙面自動埋弧焊(han)(han)(han)(han)(han)或單面焊(han)(han)(han)(han)(han)法制成(cheng)的用(yong)于(yu)(yu)水(shui)、煤氣、空(kong)氣和蒸汽等一(yi)般低壓(ya)(ya)流(liu)體(ti)輸(shu)送用(yong)。