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                                                                                                                                                                                                                                螺旋鋼管

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                                                                                                                                                                                                                                GB/T9711國標螺旋鋼管

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                                                                                                                                                                                                                                GB/T9711國標螺旋鋼管

                                                                                                                                                                                                                                 

                                                                                                                                                                                                                                 

                                                                                                                                                                                                                                螺旋管及其標準分類

                                                                                                                                                                                                                                  承壓流體輸送用螺旋縫埋弧焊鋼管SY5036-83主要用于輸送石油、天然氣的管線;承壓流體輸送用螺旋縫高頻焊鋼管SY5038-83,用高頻搭接焊法焊接的,用于承壓流體輸送的螺旋縫高頻焊鋼管。鋼管承壓能力強,塑性好,便于焊接和加工成型;一般低壓流體輸送用螺旋縫埋弧焊鋼管SY5037-83,采用雙面自動埋弧焊或單面焊法制成的用于水、煤氣、空氣和蒸汽等一般低壓流體輸送用埋弧焊鋼管

                                                                                                                                                                                                                                現在螺旋鋼管的常用標準一般分為:SY/T5037-2000(部標、也叫 普通流體輸送管道用螺旋縫埋弧焊鋼管)、GB/T9711.1-1997(國標、也叫石油天然氣工業輸送鋼管交貨技術條件第一部分:A級鋼管(到目前要求嚴格的有GB/T9711.2 B級鋼管))、API-5L(美國石油協會、也叫管線鋼管;其中分為PSL1PSL2兩個級別)、SY/T5040-92(樁用螺旋縫埋弧焊鋼管)

                                                                                                                                                                                                                                螺旋管材質Q235A,Q235B、20號、Q34516Mn)、L245(B)、L290X42)、L320X46)、L360X52)、L390(X56)、L415(X60)、L450(X65)、L485(X70)、L555(X80) L290NB/MBX42N/M)、L360NB/MBX52N/M)、L390NB/MB(X56N/M)、L415NB/MB(X60N/M)、L450MB(X65)、L485MB(X70)、L555MB(X80)。

                                                                                                                                                                                                                                 

                                                                                                                                                                                                                                發表日期:2018/11/20  瀏覽次數:
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                                                                                                                                                                                                                                最近最新2019中文字幕,日本H熟肉动漫在线观看,漂亮少妇边打电话边做,午夜DJ免费直播视频