鋼制對焊無縫管件材料及技術要求
管(guan)(guan)件(jian)(jian)與管(guan)(guan)子的(de)連接方式采(cai)(cai)用(yong)(yong)對焊(han)連接的(de)稱為(wei)對焊(han)管(guan)(guan)件(jian)(jian)。在(zai)對焊(han)管(guan)(guan)件(jian)(jian)中(zhong)，通常(chang)(chang)采(cai)(cai)用(yong)(yong)無縫(feng)鋼(gang)管(guan)(guan)推(tui)制加(jia)工而成的(de)稱為(wei)對焊(han)無縫(feng)管(guan)(guan)件(jian)(jian)。本章涉及DN15～DN800（NPS1/2～NPS24）碳鋼(gang)、合金鋼(gang)和(he)不銹鋼(gang)對焊(han)無縫(feng)管(guan)(guan)件(jian)(jian)。1.用(yong)(yong)于制造管(guan)(guan)件(jian)(jian)常(chang)(chang)用(yong)(yong)的(de)材料牌號和(he)標(biao)準見(jian)表8-27和(he)表8-28。2.允許采(cai)(cai)...
