Black Steel Square Pipe1,Website:http://www.sinosteelpipes.com,Specification:       Material: Q195,Q235,Q275,Q345                  20#,45#                                S235,S355St33,St37,St52A500,A513,A106SS400Size ListLength      (mm)Thickness      (mm)Sectional Area      (cm2)Weight      (kg/M)Inertia Moment      (cm4)Section Modulus      (cm3)403.54.93.8511.165.5845.494.5614.376.8456.985.4816.567.8767.555.9315.347.675047.095.5625.5610.2258.586.7329.8111.9369.957.8133.3513.34711.218.836.2314.49812.359.738.5115.4160510.588.354.5718.19613.359.6961.8220.61714.011168.0322.68815.5512.2173.2824.4370512.589.8790.2625.79614.711.58103.129.47716.8113.19114.532.72818.7514.72124.535.5780514.5811.44138.934.72617.1513.46159.739.93719.6115.39178.544.63821.9517.23195.448.8592516.9813.33217.147.19620.0315.72251.154.59722.9718.03282.361.38825.7920.25310.967.58100518.5814.58282.856.57621.9517.23328.265.54725.2119.79370.274.04828.3522.36408.981.78108519.9615.67346.9972.14623.5518.49400.0785.13727.0221.21448.1597.61830.3523.82491.42109.561036.6228.75564.27131.841242.3733.26620.05151.9112.543.7334.33631.48156.571447.5937.36660.12169.7116.553.3841.9690.13188.751856.4644.32698.5198.48110728.0121.99503.491.54831.5524.77557.9101.4934.9827.46608.4110.61037.4229.37600.9137.261243.3334.01661.57158.31448.7138.24705.79177.051653.5742.05734.96193.471857.945.45750.37207.58120522.3617.55485.4789.79626.4320.75562.16106.17730.3823.85632.54121.99834.1926.84696.82137.231041.4232.15807.91165.941248.1337.78987.05192.031454.3142.639665.79216.231659.9747.081015.66237.3150633.6326.41145.91168.85738.7830.441299.44194.7843.7934.381443219.851053.4241.931701.21268.021262.5349.091922.61313.261471.1155.822109.19355.491679.1762.152262.95394.631801698.3777.224252.42590.5518108.385.024541.3648.77200859.7946.943621400.251073.4258.634337.63491.531286.5367.934983.59579.081499.1177.85562.26662.7816111.1787.276076.38742.5518122.796.326528.64818.292501093.4273.338841.87781.7312110.5386.7710254.22924.9414127.1199.7811556.241063.5116143.17112.3912751.411197.3118158.7124.5813843.171326.2728010105.4282.7512648.95987.8612124.9398.0714726.821170.8814143.91112.9716663.461348.7716162.37127.4618462.791521.4218180.3141.5420128.711688.73Shape Rectangular:20*30-600*800mmSquare:20*20-600*600 mmThickness1.0-35 mmStandardGB/T3094-2000  GB/T6728-2002 ASTM A500  JIS G 3466 DIN EN 10210 or according to customers' requirement.MaterialQ195,Q235,Q275,Q345                   20#,45#                                 S235,S355 St33,St37,St52 A500,A513,A106 SS400.TechniqueHot Rolled, Cold Rolled, ERW,  High-frequency welded,  ExtrudedTest1.Chemical Component Analysis (C,Si,Mn,S,P) 2.Mechanical Properties (Tensile Strength, Yield Strength, Elongation ) MTC is supplied.Third party inspection: BV,SGS2,Characteristic & Application: It is widely used in mechanical manufacture, construction field, metallurgy industry, farm vehicles, agriculture greenhouse, automotive industry, railway, highway guardrail, container frame, furniture, decoration, steel structure etc. 3,Product show:Finished product4. Adavantage:As one of the biggest manufactures of China, we exported large quantity to American, Europe, Asia and Africa countries, due to high quality and reasonable price. Our price is very competitive because we are manufacturer, we are the source.