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stainless square pipe Application:oil, chemical, boiler industry, high temperature resistance,resistant corrosion. Steel grade:TP304L, 316L, 321, 310, 904, duplex,nickel alloy Our company supply a variety of seamless steel pipe, alloy steel pipe, stainless steel pipe, spiral steel pipe, high pressure boiler steel pipe, low and medium pressure steel pipe, square pipe, thick-walled steel pipe, structure steel pipe, line pipe, precision tube oil pipe, galvanied steel pipe and so on. size Wall thickness Weight/inch Sectional area I S r In. In. Lb In.2In.4 In.3 In. 16×16 .5000 1/2 103.3030.41200 150 6.29 .3750 3/8 78.5223.1931 116 6.35 .3125 5/16 65.8719.4789 98.6 6.38 14×14 .5000 1/2 89.6826.4791 113 5.48 .3750 3/8 68.3120.1615 87.9 5.54 .3125 5/16 57.3616.9522 74.6 5.57 12×12 .5000 1/2 76.0722.4485 80.9 4.66 .3750 3/8 58.1017.1380 63.4 4.72 .3125 5/16 48.8614.4324 54.0 4.75 .2500 1/4 39.4311.6265 44.1 4.78 Dimension of products can be made according to your requirements.Our products are high quality with proper price, in the conformity with mutual benefits, we warmly welcome clients all over the globe cooperate with us.If you have any purchase plan, please don't hesitate to contact with us, we will offer you most competitive price, sincerely wish to hear from you soon. We would like to send you quotation as soon as possible and provide you with best service.