About Huanan Special Steel Co. - Steel Products Supplier in China

Based in China, Huanan Special Steel Co. lists 13 active products across steel plates, steel pipes and ventilation related steel items. The catalogue includes weathering steel plates (Corten A/B) under HS code 7208.40, normalized fine‑grain carbon steel plates (HS 7208.51), boiler steel plates (HS 7225.40) and a range of stainless steel plates such as 304L, 316L, 316H, 316Ti, 309S and 310S (HS 7219.23 and 7219.31). Pipe offerings cover chromium‑molybdenum alloy pipe (HS 7304.49), alloy steel pipe per ASTM A335 P12/P22 (HS 7304.59), high‑temperature grades P91/P22/P11/P9 (HS 7304.51) and a super‑austenitic UNS N08031 pipe/plate (HS 7306.40). The remaining entry, “Stainless Steel Ventilation”, is listed without an HS code but falls within the typical ventilation steel product range.

All listed products reference international standards such as ASTM A242 for Corten, EN 10025‑6 for S690QL, EN 10028‑3 for fine‑grain carbon plates, and ASTM A387 for chrome‑molybdenum boiler steel. Stainless steel grades correspond to AISI/ASTM specifications and are identified by their chemical composition (e.g., 304L with low carbon, 316Ti with titanium stabilization). The pipe specifications cite ASTM A335 and DIN 17175 for high‑temperature service, indicating suitability for pressure vessel and power‑generation applications. The catalogue therefore covers a spectrum from structural and shipbuilding plates to high‑temperature alloy pipes and corrosion‑resistant stainless solutions.

Product Range and Specialties of Huanan Special Steel Co.

Huanan’s product range comprises weathering steel plates (Corten A/B) typically supplied in thicknesses from 6 mm to 50 mm and yield strengths around 340 MPa, high‑strength quenched‑tempered S690QL plates meeting EN 10025‑6 with tensile strengths up to 900 MPa, and normalized carbon plates (P275NH/P355NH/P460NH) used in general construction. Stainless steel plates are offered in the common austenitic grades 304L, 316L, 316H, 316Ti, 309S and 310S, which in global trade are usually delivered with a minimum thickness of 4 mm and certified for corrosion resistance in marine and chemical environments. Pipe products include Cr‑Mo alloy tubes (HS 7304.49) commonly sized 21 - 355 mm diameter for oil‑field and power‑plant use, and high‑temperature ASTM A335 grades (P12, P22, P91, etc.) supplied in seamless or welded forms for boiler and pressure‑vessel applications. The super‑austenitic UNS N08031 pipe/plate provides a nickel‑rich composition for aggressive chloride media, often requested in thicknesses of 6 - 20 mm for petrochemical projects.

Trade and Export Information - Huanan Special Steel Co.

Chinese steel exporters such as Huanan typically ship under HS chapter 72 for plates and HS chapter 73 for pipes, with standard containerisation (20‑ft or 40‑ft containers) for plates up to 10 mm thickness and bulk freight for heavier plates or coils. Major import regions include Southeast Asia, the Middle East, Eastern Europe and North America, where construction, shipbuilding and energy sectors demand the listed grades. Buyers usually require ISO 9001 quality management certification, mill test certificates (MTC) complying with ASTM or EN standards, and, for pressure‑vessel steel, compliance with the European PED or US ASME codes. Packaging often involves wooden pallets or steel frames with moisture‑resistant wrap, and Incoterms such as FOB Shanghai or CIF destination are common in these transactions.

Sourcing from Huanan Special Steel Co. - Buyer Guidance

Prospective buyers should request the full mill test certificate for each steel grade, confirming chemical composition, mechanical properties and heat‑treatment records matching the cited ASTM/EN standards. For stainless steel and high‑temperature alloy pipes, a certificate of compliance with ASTM A335 or DIN 17175 and a pressure‑test report are standard verification steps. It is advisable to verify the HS code alignment with customs documentation, confirm the supplier’s export license for steel products, and obtain a sample cut to the intended thickness to validate flatness and surface quality before placing a bulk order.

What HS codes are used for the steel plates offered by Huanan?

The weathering steel plates (Corten A/B) and high‑strength S690QL plates are classified under HS 7208.40, normalized fine‑grain carbon plates and bulb flat plates use HS 7208.51, boiler steel plates fall under HS 7225.40, and the austenitic stainless steel plates are listed under HS 7219.23 or HS 7219.31 depending on the specific grade. These codes align with the standard HS chapter 72 classification for flat steel products.

Which international standards apply to the Corten steel plates?

Corten A and B plates are produced to ASTM A242 and EN 10025‑5 specifications, which define the chemical composition, weathering performance and minimum yield strength of the weathering steel. Compliance with these standards is typically confirmed on the mill test certificate.

What certifications should a buyer request for the high‑temperature alloy pipes?

Buyers should ask for a mill test certificate referencing ASTM A335 (grades P12, P22, P91, etc.) or DIN 17175 15Mo3, along with a pressure‑test report that demonstrates compliance with design pressure requirements. In addition, an ISO 9001 quality management certificate is commonly requested to verify the supplier’s production controls.

Are the stainless steel ventilation products covered by an HS code?

The catalogue lists “Stainless Steel Ventilation” without an HS code, but similar ventilation components are generally classified under HS 7219.23 for stainless steel plates or HS 7306.40 for stainless steel pipe, depending on shape and dimensions. Buyers should confirm the exact HS code during the purchase order process.

What typical dimensions are supplied for the pipe products?

Pipe diameters are commonly offered from 21 mm up to 355 mm with wall thicknesses ranging from 2 mm to 20 mm, matching the size ranges used in power‑generation, oil‑field and petrochemical installations. Custom dimensions are available on request, subject to additional lead time.

How are the steel plates usually packaged for export?

Plates up to 10 mm thickness are typically bundled on wooden pallets with steel strapping and moisture‑resistant film to prevent corrosion during transit. Thicker or heavier plates are often shipped in bulk on open‑top containers or flat‑rack trucks with protective edge guards and internal bracing.

What lead time can a buyer expect for a standard order?

For standard grades that are stocked, lead times are typically 15 - 30 days after receipt of a confirmed purchase order and the required mill test certificates. Special heat‑treatment, non‑standard dimensions or bulk orders may extend the period to 45 days or more.

What documentation should be verified before finalising a purchase?

Buyers should verify the mill test certificate, a certificate of compliance with the relevant ASTM or EN standard, and any required export licences or customs documentation. For pressure‑related products, a PED or ASME compliance statement and a recent pressure‑test report are advisable.