This is an A653 Galvanized Steel Gauge 18, 1" x 1’’x 20' Square tubing. This is an ERW tubing (Electric Resistance Welded) easily welded, rolled or punched, Steel and Pipes stocks ASTM A653. Galvanized steel Tubing is compliant with ASTM A653 specifications. ASTM A653 Steel is a standard...
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