浙江直角方距管经验丰富厂家供应

应用：
重型钢结构
航天工程
高铁
船舶制造
机械用无缝钢管
汽车及高速列车用无缝钢管
化工及锅炉用无缝钢管
桥梁用无缝钢管
三，证书
CE EN10210-1:2006
CE EN10219-1:2006
CE EN10204.3.1 
CE EN10204.3.2
ABS Certificate (American Bureau of Shipping)
ISO9001:2008
SGS BV etc.
四，标准
DIN EN 10210 (Europe) 
Hot finished structural hollow sections of non-alloy and fine grain steels
DIN EN 10219 (Europe) 
Cold bed welded structural hollow sections of non- alloy and fine grain steels
ASTM A500 (American) Cold bed structural Circular sections and special sections (welded/seamless)
GB/T 3094-2000 (China)
Cold drawn bing steel tube
GB/T 6728-2002(China)
Cold bed structural hollow sections
JISG 3466(Japan)
Carbon steel square pipes for general structural purposes
AS 1163(Australia)
Structural Steel Hollow Sections