HSS SuperStruct FAQs

What is the ASTM specification that HSS SuperStruct sections are produced to?

ASTM specification A1065

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What are the common grades of steel that HSS SuperStruct sections are produced to?

The most common grades of steel used are ASTM A572 Grade 50, Grade 65 and Grade 70 along with ASTM A588 Grade 50. For other grades of steel that may be required, please inquire. Charpy test requirements must be communicated at the time of inquiry.

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What type of welding process is used to produce the HSS SuperStruct sections?

Tubes are submerged arc welded (SAW) the length of the tube on parallel sides with 3/8" backing bars used along the ID weld seam. As a standard, the weld is located on the shorter side of the two side dimensions for rectangular sections. Please notify Valmont at the time of inquiry if the weld seam location needs are different.

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What are the standard lead times for HSS SuperStruct tubes?

All orders are produced as made-to-order. Lead times will vary based upon market conditions and quantities required. Orders with lengths greater than 40 ft in addition to orders utilizing A588 grade steel may add additional lead time.

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What are the minimum and maximum lengths that can be produced?

The standard minimum length is 15 feet (lengths less than that would need to be approved before order acceptance). The standard maximum length is 55 feet; however, 60 foot sections are possible depending upon size and wall thicknesses.

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What is the minimum quantity that can be ordered?

The minimum order quantity is 1 piece.

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By what method are HSS SuperStruct orders shipped?

Orders are shipped on flatbed trailers. For order quantities less than a truckload in weight or volume, consolidations with other customer orders are available for certain regions. Please be aware that consolidations may require additional lead time to accommodate.

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What is the standard corner radius for SuperStruct tube sections?

The standard inside corner radius for the tube sections is 2.00". For non-standard corner radius requirements, please inquire.

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What is the minimum weld penetration available?

The longitudinal weld seams have a minimum standard of 80% weld penetration. If required, 100% weld penetration with ultrasonic testing (UT testing) is available. Please notify Valmont at time of inquiry and order placement if 100% weld penetration is required.

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Does Valmont offer curving of HSS SuperStruct tubes?

Valmont does not offer this service. Please refer to www.aisc.org/benders for a listing of fabricators who offer this service.

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Does Valmont provide engineering data such as moment of inertia?

Calculation of such data is the responsibility of the customer. Valmont will provide relevant information that is helpful for such calculations when possible.

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