Steel Square Arms are constructed of weldable-grade, cold-rolled, commercial quality 11 gauge carbon steel tubing conforming to ASTM A500 Grade B. All welds shall conform to AWS D1.1 using ER70S-6 electrodes. Stainless Steel Mounting Hardware is included. Center Hubs are 4” Square. Custom designs including varying Square Arm diameters, Arm dimensions, and Center Hub sizes to accommodate varying Tenons are available. Please contact Hapco for more information.

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