Exporting Hollow Structural Sections to the US — Construction Distributors

Hollow structural sections (HSS) are a critical component in modern US construction, used in everything from steel-framed buildings and bridges to industrial racking and architectural structures. For US construction distributors, securing a reliable, cost-effective supply of HSS is essential to meeting project deadlines and maintaining margins. Latin America, with its growing steel production capacity and proximity to US ports, offers a strategic sourcing alternative to traditional markets like Asia and Europe. This page provides a comprehensive guide to exporting HSS from Latin America to the US, covering specifications, supplier landscape, buyer requirements, certifications, pricing, and how Coppermont facilitates these transactions.

Product Specifications and Grades Relevant to US Buyers

Hollow structural sections are defined by their shape—square, rectangular, or round—and by the steel grade and manufacturing standard. In the US, the governing standard is ASTM A500, which covers cold-formed welded and seamless carbon steel structural tubing in round, square, and rectangular shapes. The most common grades are A500 Grade B (minimum yield strength of 46,000 psi for round, 42,000 psi for shapes) and Grade C (50,000 psi yield for round, 46,000 psi for shapes). For applications requiring higher strength or corrosion resistance, ASTM A847 (weathering steel) or ASTM A1085 (for seismic and high-performance applications) may be specified. Wall thicknesses typically range from 0.065 inches to 0.500 inches, with outside dimensions from 1 inch to 16 inches for round, and up to 20 inches square or 24 inches by 12 inches rectangular. Dimensional tolerances per ASTM A500 are tight: for example, outside dimensions must be within ±0.5% for sizes up to 2.5 inches, and ±0.010 inches for larger sizes. US construction distributors prioritize compliance with these standards, as deviations can lead to costly rejections or structural failures. In addition to ASTM, many projects reference the Steel Construction Manual published by the American Institute of Steel Construction (AISC), which provides design guidance for HSS members. For distributors, the ability to supply material with a certified mill test report (MTR) confirming chemistry and mechanical properties is non-negotiable.

Latin America and Africa Supplier Landscape for Hollow Structural Sections

Latin America has emerged as a significant producer of HSS, driven by investments in electric arc furnace (EAF) technology and access to regional scrap and iron ore. Key producing countries include Mexico, Brazil, and Argentina. Mexico, with its proximity to the US border and membership in the USMCA, is the largest Latin American supplier of steel pipe and tube to the US. Mexican producers such as Ternium (with mills in Monterrey and Puebla) and Tenaris (through its Tamsa division) supply large volumes of HSS to US distributors. Brazil, home to Gerdau and ArcelorMittal Brasil, also exports HSS, though lead times are longer due to shipping distances. Argentina’s Acindar (part of ArcelorMittal) is another source. In Africa, South Africa’s steel industry, led by ArcelorMittal South Africa and smaller mills, produces HSS primarily for domestic and regional markets, but exports to the US are limited due to trade barriers and logistics costs. However, some African producers are exploring US market access under the African Growth and Opportunity Act (AGOA), though HSS is not currently a major AGOA export. The competitive advantage of Latin American suppliers lies in shorter shipping times (7–14 days from Mexico versus 30–45 days from Asia), lower freight costs, and tariff preferences under USMCA. For US construction distributors, sourcing from Mexico can reduce inventory carrying costs and improve responsiveness to construction schedules. However, buyers must verify that suppliers hold valid ASTM certifications and can provide consistent quality across large orders.

US Buyer Types: Who Buys HSS and How They Procure

US construction distributors are the primary intermediaries between HSS mills and end-users such as structural steel fabricators, general contractors, and industrial project developers. Distributors typically maintain large inventories of standard sizes and grades, and they purchase HSS in truckload quantities (40,000–44,000 pounds per load) or railcar volumes for larger orders. Procurement is driven by project specifications: a distributor may need to source 500 tons of A500 Grade B square HSS for a high-rise building in New York, or 200 tons of round HSS for a bridge in Texas. Key decision factors include price per ton, lead time, mill certification, and the supplier’s ability to meet dimensional tolerances. Distributors often use procurement platforms like MetalMiner or direct mill relationships to obtain quotes. They also rely on third-party inspection services to verify quality before shipment. For imported HSS, distributors must factor in customs duties (typically 25% under Section 232 if the product is not exempt), logistics costs, and potential delays at ports. Many US distributors prefer to work with suppliers who offer ex-mill pricing with clear terms, and who can provide letters of credit or other trade finance instruments. The US construction market is cyclical, so distributors time their purchases to align with construction spending cycles. According to the US Census Bureau, total value of construction put in place in 2023 was approximately $1.98 trillion, with nonresidential construction accounting for about $1.1 trillion. Steel-intensive sectors like manufacturing, infrastructure, and commercial buildings drive HSS demand. For example, the Infrastructure Investment and Jobs Act (IIJA) has boosted demand for HSS in bridge and road projects. Distributors are also increasingly focused on sustainability, preferring suppliers with environmental product declarations (EPDs) and lower carbon footprints. Latin American EAF mills, which use recycled scrap, often have lower CO2 emissions per ton compared to integrated blast furnace mills, making them attractive to environmentally conscious buyers. [1]

Certifications and Import Requirements for Hollow Structural Sections

To export HSS to the US, suppliers must comply with several regulatory and industry standards. The primary certification is ASTM A500, which requires mill testing of mechanical properties (tensile and yield strength, elongation) and chemical composition (carbon, manganese, phosphorus, sulfur, copper). Each heat of steel must be tested, and a certified mill test report (MTR) must accompany each shipment. Additionally, HSS used in seismic applications may require Charpy V-notch impact testing per ASTM A673. For imports, the US Customs and Border Protection (CBP) requires a valid entry summary with the correct Harmonized Tariff Schedule (HTS) code. HSS is typically classified under HTS 7306.30 (other welded pipe and tube) or 7306.61 (hollow profiles). Section 232 tariffs on steel imports currently impose a 25% duty, although products from Mexico and Canada may be exempt if they meet USMCA rules of origin. Suppliers must provide a certificate of origin (Form CF-434 for NAFTA/USMCA) to claim duty-free treatment. In addition, the US Department of Commerce’s antidumping and countervailing duty orders may apply to HSS from certain countries. For example, circular welded carbon steel pipe from China, India, and other countries has been subject to antidumping duties. Latin American suppliers generally face lower trade barriers, but buyers should verify current duty rates. For quality assurance, many US distributors require that HSS be produced at mills registered to ISO 9001 (quality management) or ISO 14001 (environmental management). Some large projects also mandate third-party certification by agencies like Underwriters Laboratories (UL) or the American Society of Mechanical Engineers (ASME). Finally, all steel imports must meet US safety standards, including the Consumer Product Safety Commission’s lead content limits if the steel is used in children’s products—though this is rare for HSS. [2][3]

Pricing and Lead Time Context

HSS pricing is influenced by global steel market dynamics, raw material costs (scrap, iron ore, energy), and regional supply-demand balances. As of early 2025, US domestic prices for A500 Grade B HSS range from approximately $1,200 to $1,600 per ton, depending on size, wall thickness, and order volume. Imported HSS from Latin America typically offers a discount of 10–20% compared to domestic mill prices, though this varies with freight, duties, and currency fluctuations. For example, a Mexican mill might quote $1,050 per ton FOB for standard square HSS, with total landed cost in Houston around $1,250 after freight, duty (if applicable), and insurance. Lead times from Latin American mills are generally 4–8 weeks from order to port of loading, plus 1–2 weeks for ocean transit to US Gulf ports. This compares favorably to Asian suppliers, where total lead time can exceed 12 weeks. For US construction distributors, shorter lead times reduce the risk of project delays and allow for just-in-time inventory management. However, prices are volatile: the LME steel scrap contract and US hot-rolled coil prices are key indicators. In 2024, US HRC prices averaged around $1,100 per ton, but spiked to $1,400 in Q3 due to supply constraints. HSS prices tend to move in tandem with HRC, with a typical premium of $100–$200 per ton for value-added processing. Distributors often negotiate volume discounts for annual contracts, with typical minimum order quantities of 100 tons per size. Payment terms are usually 30–60 days after bill of lading, with letters of credit common for new supplier relationships. [4]

How Coppermont Connects Suppliers to Buyers

Coppermont specializes in bridging the gap between Latin American steel producers and US construction distributors. Our team has deep expertise in the HSS market, including knowledge of ASTM standards, USMCA compliance, and logistics optimization. For suppliers, we provide market intelligence on US buyer preferences, help with certification and documentation, and connect them with vetted distributors seeking reliable supply. For US buyers, we offer a curated network of mills that meet strict quality and delivery standards, reducing the time and risk of sourcing internationally. Our end-to-end service includes: (1) supplier qualification and audit, (2) contract negotiation and price benchmarking, (3) logistics coordination including freight booking and customs clearance, (4) quality assurance with third-party inspection, and (5) trade finance solutions such as letters of credit or supply chain financing. We also provide real-time market data and pricing trends to help both parties make informed decisions. Whether you are a Mexican mill looking to expand your US customer base or a Texas distributor seeking a cost-competitive source for A500 HSS, Coppermont can facilitate the deal. Our track record includes successfully managing over $500 million in cross-border steel transactions, with a focus on transparency and reliability. [5]

Bottom Line for Latin American HSS Suppliers

The US construction market presents a significant opportunity for Latin American HSS suppliers, driven by strong demand from infrastructure and building projects, and the need for competitive pricing and reliable supply chains. By understanding the specific product specifications, certification requirements, and procurement practices of US construction distributors, exporters can position themselves for success. Coppermont is here to help navigate the complexities of cross-border trade, from compliance to logistics. Contact us today to explore how we can support your HSS exports or imports.

Supplier CTA: Are you a Latin American HSS producer? Partner with Coppermont to reach US construction distributors. Get in touch for a market assessment.

Buyer CTA: Are you a US construction distributor seeking quality HSS from Latin America? Let Coppermont connect you with vetted mills. Request a quote today.