About Tianjin Xinhehua Iron And Steel Co., Ltd. - Steel Coils Supplier in China

Tianjin, China hosts Tianjin Xinhehua Iron And Steel Co., Ltd., which currently lists eleven distinct steel products in its catalogue. The company’s top categories include steel coils, steel strips, steel pipes, steel sheets, and roofing & ceiling solutions. Its product list features Pre Paint Galvanized Steel Coil Sheet, Wood Grain PPGI Prepainted Steel Sheet, Galvanized Steel Pipe, Seamless Steel Pipe, and Steel Strip. Additional items with detailed HS codes are Welding Square Pipe (HS code 7306.30, carbon steel grade S235/S355), Cold Rolled Steel Sheet (HS code 7209.17, low‑carbon steel CR grade SAE 1006‑1010), Galvanized Steel Coils (HS code 7210.49, hot‑dip zinc‑coated steel), Galvalume Steel Coils (HS code 7210.61, aluminum‑zinc alloy coated steel), Pre Paint Galvalume Steel Coil (HS code 7210.70, Al‑Zn‑Si alloy with polymer finish), and Galvalized/Galvalume Roofing Sheet.

Product Range and Specialties of Tianjin Xinhehua Iron And Steel Co., Ltd.

These offerings include cold‑rolled steel sheet (CR grade SAE 1006‑1010) classified under HS 7209.17, which aligns with industry standards such as ASTM A1008 and EN 10346 for cold‑rolled flat products. Galvanized steel coils (HS 7210.49) use hot‑dip zinc coating that typically meets ASTM A123 or ISO 1461 coating thickness requirements of 45 µm to 150 µm.

Galvalume coils (HS 7210.61) combine approximately 55 % aluminium, 43.5 % zinc and 1.5 % silicon, delivering corrosion resistance comparable to zinc‑aluminium alloys and complying with ASTM A792. Pre‑painted Galvalume coils (HS 7210.70) add a polymer topcoat, where common finishes target a film thickness of 30‑60 µm and a gloss level of 80‑90 % according to ISO 2813. Welding square pipe (HS 7306.30) in carbon steel grades S235 and S355 conforms to EN 10219 for welded hollow sections, while seamless steel pipe typically follows API 5L for oil‑field applications.

Trade and Export Information - Tianjin Xinhehua Iron And Steel Co., Ltd.

China is a major exporter of coated and cold‑rolled steel products, with shipments frequently destined for Southeast Asia, the Middle East, and European construction markets. The HS‑code families 7209, 7210 and 7306 are routinely inspected under the Shanghai General Administration of Customs, requiring a commercial invoice, packing list and, where applicable, a mill test certificate.

Buyers usually request ISO 9001 quality management certification, CE marking for EU compliance, and product‑specific test reports such as coating thickness (ASTM D165), tensile strength (ASTM A370) and chemical composition analysis. Standard export packaging involves coil bundles on timber or steel pallets, secured in 20‑ft or 40‑ft containers, with common Incoterms CIF or FOB. Export documentation often includes a Certificate of Origin and, for steel destined for the United States, a compliance statement under the Section 301 tariff exclusions.

Sourcing from Tianjin Xinhehua Iron And Steel Co., Ltd. - Buyer Guidance

Prospective buyers should obtain the mill test certificate for each steel grade to verify chemical composition, tensile strength and coating thickness before placing an order. Requesting a sample of the pre‑painted finish or galvanised coating can confirm colour consistency and adhesion performance against ISO 2813 gloss and scratch tests.

Confirm the coil dimensions, weight per metre and packaging details to ensure compatibility with the buyer’s handling equipment. Verify that the supplier can provide required certifications such as ISO 9001 or CE upon request, and clarify lead times for standard coil lengths (typically 30‑45 days) and pipe deliveries (usually 25‑35 days).

What steel grades are available for the cold‑rolled steel sheet?

The cold‑rolled steel sheet is listed as low‑carbon steel CR grade SAE 1006, 1008 or 1010, which corresponds to the EN 10346 grade 1.0301‑1.0359 and meets ASTM A1008 specifications.

Which HS codes apply to the galvanized and Galvalume coils?

Galvanized steel coils fall under HS 7210.49, while Galvalume steel coils are classified under HS 7210.61. Pre‑painted Galvalume coils use HS 7210.70.

What surface treatment standards are typical for the pre‑painted steel sheets?

Pre‑painted sheets usually adhere to ISO 2813 for gloss measurement and ISO 12944 for coating durability, with a polymer film thickness of 30‑60 µm.

How are the welding square pipes specified?

Welding square pipe is described with HS 7306.30 and is made from carbon steel grades S235 or S355, complying with EN 10219 for welded hollow sections.

What packaging and container sizes are used for coil shipments?

Coils are typically bundled on steel pallets and loaded into 20‑ft or 40‑ft containers, with a standard coil weight of 12‑15 tonnes per 40‑ft container.

Which certifications should a buyer request before purchasing?

Buyers should request the mill test certificate, ISO 9001 quality management certification, and, for EU markets, CE conformity documentation. Additional coating test reports (ASTM D165) are also common.

What is the typical lead time for standard steel coil orders?

Standard coil orders from China usually require 30‑45 days from order confirmation to shipment, depending on product availability and shipping terms. Lead times for pipe products are generally 25‑35 days.