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... Item OD Galvanized Square pipe/tubing Size: 15mm*15mm-400mm*400mm Wall thickness 0.7-25mm Standard SY/T5037, SY/T5040, GB/T9711.1 ,GB/T9711.2 ,ASTMA53, ASTMA252, and API SPEC 5L Material Q235B,Q345B,20#,45#...
...Item 40*60 pre galvanized rectangular tube OD: 21-1220mm Wall thickness 0.7-2.5mm Standard SY/T5037, SY/T5040, GB/T9711.1 ,GB/T9711.2 ,ASTMA53, ASTMA252, and BS1387 Material Q235B,Q345B,20#,45#,Q215 Coatiing...