鋼制對焊無縫管件材料及技術要求
管(guan)(guan)件(jian)(jian)(jian)(jian)(jian)與管(guan)(guan)子的(de)(de)連(lian)接(jie)方式(shi)采用(yong)(yong)對(dui)(dui)焊連(lian)接(jie)的(de)(de)稱(cheng)為對(dui)(dui)焊管(guan)(guan)件(jian)(jian)(jian)(jian)(jian)。在對(dui)(dui)焊管(guan)(guan)件(jian)(jian)(jian)(jian)(jian)中,通常采用(yong)(yong)無(wu)縫鋼管(guan)(guan)推制(zhi)加工(gong)而成(cheng)的(de)(de)稱(cheng)為對(dui)(dui)焊無(wu)縫管(guan)(guan)件(jian)(jian)(jian)(jian)(jian)。本章涉及DN15~DN800(NPS1/2~NPS24)碳(tan)鋼、合金鋼和(he)不銹(xiu)鋼對(dui)(dui)焊無(wu)縫管(guan)(guan)件(jian)(jian)(jian)(jian)(jian)。1.用(yong)(yong)于制(zhi)造管(guan)(guan)件(jian)(jian)(jian)(jian)(jian)常用(yong)(yong)的(de)(de)材料牌號(hao)和(he)標(biao)準見表8-27和(he)表8-28。2.允許采...