Valmont Tubing produces square, rectangle, round and special shaped electric resistance welded (ERW) high strength, low alloy (HSLA) atmospheric corrosion resistant structural steel tubing to meet ASTM specification A847. Commonly referred to as weathering steel, ASTM A606 Type 4
high strength, low alloy (HSLA) steel utilizes elements such as copper, chromium, nickel and silicon to enhance the protection and resistance to atmospheric corrosion.
Tubes produced to ASTM A847 are mainly used in an unpainted condition where the surface will develop a weathered orange-brown oxide over time that inhibits corrosion. With the additional elements such as those noted above, the added strength of the steel itself allows for a lighter wall thickness of steel to be used than for carbon steel tubing in order to meet structural physical requirements.
For a complete listing of all tubing sizes produced by Valmont, please visit our Steel Tubing Product Catalog