Ring Lock System 1.9" OD Tube used for Verticals and Horizontals. Q345A Steel used for high Tensile strength(over 60,000 psi) and yield strength(over 70,000 psi). Hot-dip galvanized finish to prevent rust in outdoor storage and usage. American Welding Society(AWS) D1.1 welding standard is strictly followed to ensure strong connection points.

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