無縫方管，ASTM美標鍍鋅方管，捆扎橋用方管，石油化工用方管，EN10210熱軋方管一．產(chǎn)品：?焊縫&無縫方管?焊縫&無縫矩管方管型號：20x20mm---800x800mm矩管型號：20x30mm---600x800mm材質（鋼號）：Q235B?S275JR?S355J2H?STK490??GRB/C/D??Q345B/C/D/E??S304?S316L?etc表面（材料）：黑管，熱鍍鋅，涂油，噴漆，噴砂等。?二，應用：重型鋼結構航天工程高鐵船舶制造機械用無縫鋼管汽車及高速列車用無縫鋼管化工及鍋爐用無縫鋼管橋梁用無縫鋼管?三，證書CE?EN10210-1:2006CE?EN10219-1:2006CE?EN10204.3.1???CE?EN10204.3.2ABS?Certificate?(American?Bureau?of?Shipping)ISO9001:2008SGS?BV?etc.四，標準DIN?EN?10210?(Europe)??Hot?finished?structural?hollow?sections?of?non-alloy?and?fine?grain?steels?DIN?EN?10219?(Europe)?Cold?formed?welded?structural?hollow?sections?of?non-?alloy?and?fine?grain?steels?ASTM?A500?(American)?Cold?formed?structural?Circular?sections?and?special?sections?(welded/seamless)?GB/T?3094-2000?(China)Cold?drawn?forming?steel?tube?GB/T?6728-2002(China)Cold?formed?structural?hollow?sections?JISG?3466(Japan)Carbon?steel?square?pipes?for?general?structural?purposes?AS?1163(Australia)Structural?Steel?Hollow?Sections五，趙丹(銷售經(jīng)理）Skype:zhaodan12391