SHS pipeStandard: BS,Website:http://www.tytsteeltube.com, GB, ASTM, BS 1387, BS EN10025, GB/T 3091-2001, ASTM A106-2006, ASTM A53-2007Grade: 10#-45#, 16Mn, A53-A369, ST35-ST52, Q195-Q345, 20#, 16Mn, A53(A,B), A106(B,C), St37, St52, Q235, Q345, Q195, Q215, Section Shape: SquarePlace of Origin: Tianjin, China (Mainland)Technique: ERWCertification: BSISpecial Pipe: EMT PipeAlloy Or Not: Non-alloyItem: square Hollow section Descrption:10mm*10mm~400mm*400mmLength: 2-12mUsage: Fence ,Steam heating pipe ,Greenhouses tube and so on .Packaging & DeliveryPackaging Details:Bundle or BulkDelivery Detail:According to the quantity ,Common 15~20 daysChemical Composition (%)GradeMethod ofdeoxidationchemical        cComposition      SiMnPSQ195F   Z0.120.300.500.0350.050Q215AF   Z0.150.351.200.045BF   Z0.045Q235AF   Z0.220.351.400.0450.050BF   Z0.200.045CZ0.170.0400.040DT   Z0.0350.035Q275AF  Z0.240.351.500.0450.050BZ0.210.0450.045CZ0.200.0400.040DT  Z0.0350.035Mechanical PropertiesGradeYield Strength (Mpa)Tensile Strength (Mpa)Q195195-18533Q215215-16531-26Q235235-18526-21Q275275-21522-17