About Topsun Trading Co., Ltd. - Steel and Aluminum Supplier in South Korea

Topsun Trading Co., Ltd. is a trading entity based in South Korea (Republic of Korea) that lists 6 active products across two industrial groupings: ferrous metals (steel rebar, plate, coil and pipe) and non-ferrous metals plus paper packaging (aluminum alloy ingots and duplex paper board). The steel side covers the four principal long and flat carbon-steel forms used in construction and line-pipe applications, with HS codes spanning 7208.25, 7208.90, 7214.20 and 7304.30, while the aluminum line sits under HS 7601.20 for unwrought alloy. The catalogue is concentrated in commodity-grade mill products rather than finished engineered goods, which is typical of Korean trading desks that source from domestic mills (POSCO, Hyundai Steel) and re-channel into regional B2B buyers. The geographic context matters: South Korea is one of Asia's largest steel producers, ranking consistently among the top 5 global crude-steel producers, and is a net exporter of flat steel, rebar and line-pipe to Southeast Asia, the Middle East and the Americas. Korean aluminum demand is dominated by die-casting (ADC12 is the dominant secondary alloy for automotive and appliance castings) and the country imports the bulk of its primary aluminum while exporting value-added cast and rolled products. For a buyer, Topsun's catalogue reflects what Korean mills and warehouses actually move in bulk: HR coil, ASTM A36 plate, HRB400/HRB500 rebar, API 5L line-pipe and ADC12 ingots, with duplex board as a complementary packaging-material line.

Product Range and Specialties of Topsun Trading Co., Ltd.

The catalogue breaks into two clear blocks. On the metals side, Topsun Trading lists Aluminum Alloy Ingot ADC12 (A383 equivalent, HS 7601.20), the most widely used secondary die-casting alloy in Asia, typically supplied in 6-7 kg pigs or 20-25 kg ingots with Si 9.5-12.0%, Fe 0.6-1.0%, Cu 1.5-3.5%, Mg 0.3% max and the balance Al. The steel rebar line (HS 7214.20) covers HRB400 and HRB500 deformed bars to diameters commonly 8-32 mm, with yield strengths of 400 MPa and 500 MPa respectively, conforming to KS D 3504 and broadly comparable to ASTM A615 Grade 40/60. Steel plate (HS 7208.90) is offered in ASTM A36, S235JR and S275JR grades, the three workhorse structural grades used in shipbuilding, general fabrication and construction, with typical thicknesses from 1.5 mm up to 100 mm and standard widths of 1,500-2,500 mm. Steel coil (HS 7208.25) is listed as hot-rolled carbon steel in SPHC, Q195 and SS400 grades, typically 1.0-12.7 mm thick, supplied in mill coils of 10-25 tonnes or slit-to-width. Steel pipe (HS 7304.30) covers API 5L Grade B and ASTM A53 Grade B, the two reference specifications for line-pipe in oil and gas transmission and for general-purpose structural and plumbing pipe, usually in 21.3-610 mm OD and SCH 10 through SCH 80 wall thicknesses. The non-metal line is Duplex Board (no HS code provided in the catalogue), a recycled-fiber folding boxboard with grey reverse and white top, typically specified at 200-450 GSM with brightness 78-82% and used for cartons, book covers and consumer packaging. Across the metals, buyers should expect mill test certificates (MTC EN 10204 3.1) to be the standard accompanying document.

Trade and Export Information - Topsun Trading Co., Ltd.

Korean steel exports are heavily concentrated in flat products (HR coil, CR coil, plate) and rebar, with the main destination regions being Southeast Asia (Vietnam, Indonesia, Thailand, Philippines), the Middle East (Saudi Arabia, UAE, Iraq), the Americas (USA, Mexico, Chile) and Africa (Egypt, Algeria, Kenya). The relevant HS code families for this catalogue are 7208 (flat-rolled hot-rolled iron/steel in coils and sheets), 7214 (other bars and rods of iron/non-alloy steel, hot-rolled), 7304 (line-pipe of a kind used for oil/gas pipelines) and 7601 (unwrought aluminum). For line-pipe specifically, HS 7304.30 covers cold-drawn or cold-rolled precision tubes, while the more common API 5L line-pipe for cross-country pipelines typically falls under 7304.19 or 7305; buyers should confirm the exact subheading on the commercial invoice. For aluminum ADC12 ingots, the typical buyer industries are automotive component die-casting (engine brackets, transmission housings), consumer appliance casings and motorcycle/electronics housings, with destination markets including Japan, China, Vietnam, India, Mexico and Turkey. Certifications and documents commonly required for these product categories include: mill test certificates to EN 10204 3.1, third-party inspection by SGS/BV/Intertek at load port, country-of-origin certificates, and for line-pipe the API monogram or evidence of API 5L compliance. Korean exporters of flat steel typically ship in 20 ft (around 20-25 tonnes) and 40 ft containers, while rebar is shipped in bulk vessels of 5,000-30,000 tonnes or in container bundles. Standard Incoterms for this trade lane are FOB Busan, CFR and CIF, with Busan being the dominant Korean load port for both steel and aluminum exports. Duplex board is typically shipped in 20 ft containers on pallets, with moisture protection and stretch-wrapping standard.

Sourcing from Topsun Trading Co., Ltd. - Buyer Guidance

For a buyer evaluating Topsun Trading Co., Ltd., the first step is to confirm the mill of origin for each steel product, since Korean mills (POSCO, Hyundai Steel, Dongkuk, SeAH) carry different reputations for surface finish, dimensional tolerance and on-time delivery. Request the mill test certificate (MTC) to EN 10204 3.1 for every shipment, showing the actual chemical composition and mechanical properties (yield, tensile, elongation) against the ordered grade, and ask for a third-party pre-shipment inspection by SGS, Bureau Veritas or Intertek covering quantity, dimensions, weight and visual defects. For rebar, confirm the rib pattern, diameter tolerance (typically +/- 0.5 mm) and bend test results; for plate and coil, confirm thickness, width, coil weight and edge condition (mill edge or slit edge). For aluminum ADC12, request the actual chemical analysis (especially Si, Fe, Cu and Mg content) and confirm whether the ingots are chill-cast or continuous-cast, as this affects melt loss and dross formation at the buyer's furnace. For line-pipe under API 5L Grade B, request the PSL1 or PSL2 designation, hydrostatic test certificates, and confirmation of the manufacturing process (seamless vs. ERW vs. LSAW). Across all six products, ask for samples before container-level orders, confirm the Incoterm and load port (Busan is the default), and clarify packaging: rebar in 2-tonne bundles, coil with eye-to-side or eye-to-eye configuration, plate on wooden runners or in bulk, pipe with end caps and in hexagonal or square bundles. The harbor trust tier indicates limited independent verification, so buyer-side due diligence (sample testing, third-party inspection, reference checks) is advisable before large-volume orders.

What product categories does Topsun Trading Co., Ltd. supply?

Topsun Trading Co., Ltd. lists 6 active products from South Korea: Aluminum Alloy Ingot ADC12, Steel Rebar (HRB400/HRB500), Steel Plate (ASTM A36, S235JR, S275JR), Steel Coil (SPHC, Q195, SS400), Steel Pipe (API 5L Grade B, ASTM A53 Grade B) and Duplex Paper Board. The catalogue is concentrated in commodity-grade carbon steel mill products and secondary aluminum alloy.

Which HS codes apply to Topsun's steel and aluminum products?

The catalogue lists HS 7601.20 for aluminum ADC12 ingots, HS 7214.20 for steel rebar, HS 7208.90 for steel plate, HS 7208.25 for hot-rolled steel coil and HS 7304.30 for steel pipe. Duplex board does not have an HS code listed in the catalogue; buyers should request the exact subheading from the supplier.

What documents should I request when ordering from Topsun?

Request a mill test certificate to EN 10204 3.1 for every steel and aluminum shipment, a country-of-origin certificate, a pre-shipment inspection report from SGS, BV or Intertek, and for line-pipe the API 5L compliance certificate. For ADC12 ingots, request the chemical composition analysis covering Si, Fe, Cu, Mg and Mn.

What are typical specifications for the steel rebar offered?

The rebar is listed as HRB400 and HRB500 deformed bars, which are the Chinese GB/T 1499.2 grades with yield strengths of 400 MPa and 500 MPa respectively, broadly equivalent to ASTM A615 Grade 40 and 60. Common diameters range from 8 mm to 32 mm, supplied in 2-tonne bundles.

What is ADC12 aluminum alloy and what is it used for?

ADC12 (also designated A383) is the most widely used secondary aluminum die-casting alloy in Asia, with typical composition Si 9.5-12.0%, Cu 1.5-3.5%, Fe 0.6-1.0%, Mg up to 0.3% and the balance aluminum. It is used for automotive components, motorcycle and appliance housings, and complex thin-wall castings where high fluidity and low melting point are required.

What are typical MOQ and lead time expectations?

For steel mill products from Korean suppliers, typical MOQs are 20 tonnes for plate and coil, 25 tonnes for rebar and 10-25 tonnes for pipe, often filling one 20 ft container. Lead times are usually 15-30 days for ex-stock items and 30-60 days for mill-run orders; confirm exact MOQ and production schedule with Topsun before issuing a purchase order.

Which Incoterms and load port are typical for Korean steel exports?

Korean steel and aluminum exporters typically quote FOB Busan, CFR or CIF to the buyer's destination port. Busan is the dominant Korean load port, handling the majority of POSCO and Hyundai Steel export volumes. Confirm the exact Incoterm, load port and shipping schedule in the proforma invoice.

What packaging should I expect for coil, plate and rebar shipments?

Hot-rolled steel coil is typically shipped eye-to-side or eye-to-eye with metal strapping and wooden or steel runners, plate is loaded on wooden dunnage or in bulk with metal bands, and rebar is bundled with wire ties in 1.5-2 tonne bundles. Duplex board is palletized and stretch-wrapped for container shipment. Confirm packaging details and container loading weights (typically 20-25 tonnes per 20 ft FCL for steel) before shipment.