About Shandong Shuangxin New Sheet Co.Ltd. - Steel Coils Supplier in China

Shandong Shuangxin New Sheet Co.Ltd. is located in Shandong province, China. The company currently lists seven distinct products across steel and aluminum sheet categories. Its catalogue includes galvanized steel coils, pre‑painted galvanized coils, corrugated roofing sheets and coated aluminum coils. These items fall under HS Chapter 72, with specific codes 7210.49 for hot‑dip galvanized steel and 7210.70 for pre‑painted steel products. The product set aligns with the company's top categories of Steel Coils, Roofing Sheets, Iron Sheets and Aluminum Coils. The supplier is classified in the "harbor" trust tier.

Product Range and Specialties of Shandong Shuangxin New Sheet Co.Ltd.

The catalogue focuses on hot‑dip galvanized and pre‑painted steel coils that are standard in construction and automotive supply chains. In the Chinese market, galvanized coils are commonly produced to ASTM A653/A792 or EN 10346 specifications, with zinc coating weights ranging from 70 to 115 g/m². Pre‑painted coils such as PPGI/PPGL are typically coated with polyester or PVDF layers, meeting ISO 12944 corrosion‑resistance classes and colour standards like RAL or Pantone. The base steel grades DX51D, SGCC and SPCC correspond to cold‑rolled carbon steel thicknesses between 0.2 mm and 2.0 mm, widely used for roofing, appliance panels and automotive parts. Corrugated roofing sheets derived from these coils are usually produced in profiles of 30 mm to 45 mm pitch, with standard widths of 1 m and lengths up to 3 m, complying with ISO 9001 quality management. Although the "Gi Good Price Coated Aluminum Coil" is listed under a steel HS code, the product description suggests a coated steel coil rather than an aluminium alloy, which is typical for mixed‑metal product lines in Chinese sheet‑metal mills.

Trade and Export Information - Shandong Shuangxin New Sheet Co.Ltd.

China is a leading exporter of galvanized and pre‑painted steel coils, with HS chapter 72 shipments routinely directed to Southeast Asia, the Middle East, Africa and European construction markets. Buyers in these regions often require compliance with ISO 9001 and CE marking for building‑material approvals, and may request mill test certificates that reference ASTM A792 or EN 10346 standards. Shipping is typically arranged in 20‑foot or 40‑foot containers, with coils bundled on wooden pallets and protected by moisture‑resistant shrink wrap to prevent rust during transit. Common Incoterms used by Chinese sheet‑metal exporters include FOB Shanghai or Ningbo and CIF destinations such as Dubai, Lagos or Rotterdam. Chinese customs inspections for HS 7210 products focus on coating thickness, zinc content and the presence of any prohibited pigments, and exporters often secure third‑party inspections by SGS or Bureau Veritas. The "harbor" trust tier indicates that the supplier’s transactions are monitored through port‑level verification, which can facilitate smoother customs clearance for bulk coil shipments.

Sourcing from Shandong Shuangxin New Sheet Co.Ltd. - Buyer Guidance

Prospective buyers should request a Mill Test Certificate (MTC) that lists the exact steel grade, chemical composition and mechanical properties for each coil batch. For galvanized coils, verification of zinc coating weight (g/m²) and corrosion resistance test results (e.g., salt‑spray test per ISO 14713) is standard practice. Pre‑painted coils require additional documentation such as a Paint Test Report showing colour match (RAL or Pantone), film thickness (µm) and adhesion test results (ASTM D3359). Samples of the finished coil or cut‑to‑size roofing panels are commonly requested before final order confirmation to assess surface finish and flatness. Buyers should also confirm the supplier’s ability to provide ISO 9001 certification and, where required, CE Declaration of Conformity for construction‑grade products. Typical minimum order quantities range from a single 5‑ton coil up to full container loads, with lead times of 15‑30 days after order receipt, depending on production scheduling.

What steel grades are available in the galvanized coils?

The galvanized coils are produced from carbon‑steel grades DX51D, SGCC and SPCC, which are standard cold‑rolled grades used for building and automotive applications.

Which HS codes apply to the pre‑painted steel products?

Pre‑painted steel coils and the associated corrugated roofing sheets are listed under HS code 7210.70, the classification for coated steel plates and sheets.

How can I verify the zinc coating quality?

Request a coating weight report showing zinc deposition in grams per square meter and a salt‑spray corrosion test (ISO 14713) to confirm compliance with typical 70‑115 g/m² specifications.

What certifications should I ask for before purchasing?

Ask the supplier for ISO 9001 quality‑management certification, mill test certificates referencing ASTM A792/EN 10346, and any CE Declaration of Conformity required for construction‑grade steel.

What are the typical packaging and shipping methods for the coils?

Coils are usually bundled on wooden pallets, wrapped in moisture‑resistant film, and loaded into 20‑foot or 40‑foot containers; common Incoterms are FOB Shanghai/Ningbo or CIF to the buyer’s port.

What is the usual minimum order quantity and lead time?

Minimum orders are generally one coil of approximately 5 tons, with lead times ranging from 15 to 30 days after order confirmation, depending on product availability and production scheduling.