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No. 59 Gongyenan Road,Jinan City, Shandong Province, ChinaJinan, ShandongChina, 250101Web Page Link: https://www.toboc.com/betterproductsco.aspx
steel square tube used road traffic safetyMaterial standardASTM A570, Grade50Yield strength60,000 psi minimumSurface treatmentHot-dipped galvanized, chromate conversion coated, organic polymer topcoatHoles7/16" holes on 1"centers on all four sides down the entire length of the postCross section1.50"
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