規格:φ32~377*5 75mm
產地:冷管(guan)、熱軋(ya)(ya)管(guan)、精(jing)軋(ya)(ya)管(guan)
庫存:噸
20#無縫鋼管介紹
20#無縫(feng)鋼(gang)管為(wei)(wei)(wei)低碳(tan)(tan)(tan)鋼(gang)管,碳(tan)(tan)(tan)鋼(gang)一(yi)般分為(wei)(wei)(wei)低碳(tan)(tan)(tan)鋼(gang)、中(zhong)碳(tan)(tan)(tan)鋼(gang)和高(gao)碳(tan)(tan)(tan)鋼(gang)三(san)種,其(qi)中(zhong)45#鋼(gang)為(wei)(wei)(wei)中(zhong)碳(tan)(tan)(tan)鋼(gang),低于45#即為(wei)(wei)(wei)低碳(tan)(tan)(tan)鋼(gang),高(gao)于45#即為(wei)(wei)(wei)高(gao)碳(tan)(tan)(tan)鋼(gang),無縫(feng)鋼(gang)管如沒有特殊要求,一(yi)般均采用20#無縫(feng)鋼(gang)管。
20#無縫鋼管(guan)材質為20#鋼,強度比15#稍(shao)高(gao),很少淬火,無回火脆性(xing)。冷變形(xing)塑性(xing)高(gao)、一(yi)般供彎(wan)曲(qu)、壓(ya)延、彎(wan)邊(bian)和錘拱等(deng)加工,
電(dian)弧焊和接(jie)觸(chu)焊的焊接(jie)性(xing)能好,氣焊時厚度小(xiao),外形要(yao)求嚴格或形狀復雜(za)的制(zhi)件上易發生裂紋。切削加工(gong)性(xing)冷拔或正火狀態較退火狀態好、一般(ban)用于制(zhi)造(zao)受力不(bu)大而韌性(xing)要(yao)求高的工(gong)件。
20#無(wu)縫鋼管的材(cai)料為:優質(zhi)碳素結構鋼
牌號:20#
標準:GB8162-2008
GB/T8163-2008
GB3087-2008
GB9948-2006
GB5310-2008