About China Material Industrial Group Ltd. - Steel Coils Supplier in China

China Material Industrial Group Ltd. is based in China and currently lists twelve active products across several categories, including Agriculture, Canned Vegetables, Steel Coils, Computer Speakers & Multimedia Devices, and Steel Pipes. The catalogue features items such as gaming and office chairs, a variety of hand wrenches, square steel tube, pre‑painted galvanized steel coils, a PPgi coil and hot‑dip galvanized steel pipe, each identified by their respective HS‑code families where applicable. The two coil entries share HS code 7210.70, indicating pre‑painted galvanized steel products, while the pipe entry carries HS code 7306.30 for hot‑dip galvanized steel pipe. This mix of furniture, tools and metal products reflects the supplier’s breadth within its listed categories.

The steel‑related entries provide material details: the pre‑painted coils are described as zinc‑coated steel substrates finished with polyester or polyurethane paint, and the PPgi coil is a zinc‑coated cold‑rolled steel substrate. The galvanized pipe is specified as carbon steel grades Q195, Q215 or Q235 with a hot‑dip zinc coating. The remaining items include a gaming chair with optional speaker, several office chairs, a square tube, and various adjustable and pipe wrenches. All products are presented without claims of certifications or performance guarantees, relying solely on the factual catalogue information.

Product Range and Specialties of China Material Industrial Group Ltd.

The pre‑painted galvanized steel coils (HS 7210.70) typically conform to ISO 9001 quality management and are offered in standard widths of 1 000 mm to 1 200 mm, thicknesses ranging from 0.5 mm to 2 mm, and zinc coating weights between 50 g/m² and 120 g/m². Buyers often request a coating thickness certificate and a mill test report that confirms the steel grade (commonly Q235) and paint finish specifications such as gloss level and adhesion. The PPgi coil follows the same dimensional and coating standards, with the additional designation of “pre‑painted” indicating a factory‑applied polymer finish. Hot‑dip galvanized steel pipe (HS 7306.30) is normally supplied in diameters from 20 mm to 219 mm, wall thicknesses that meet GB/T 5780 or ASTM A53 requirements, and a zinc coating weight of 30 - 150 g/m² depending on pipe size. Typical specifications include pressure ratings (PN10 - PN16) and a corrosion resistance test according to ISO 12944. The square tube listed without an HS code generally conforms to Chinese standard GB/T 5782, with common cross‑sections of 40 × 40 mm to 200 × 200 mm and wall thicknesses of 2 mm to 6 mm. The furniture items - gaming chairs and office chairs - are usually built with a steel or aluminum frame, PU foam padding, and a load‑bearing capacity of 120 kg to 150 kg. Standard dimensions for office chairs are seat height 40 - 55 cm and seat width 45 - 55 cm. Adjustable wrenches and pipe wrenches are commonly forged from chrome‑vanadium steel, meeting DIN 912 or ISO 7388 strength grades, with typical jaw sizes from 6 mm to 32 mm.

Trade and Export Information - China Material Industrial Group Ltd.

China remains one of the world’s largest exporters of steel products, and shipments of pre‑painted galvanized coils (HS 7210.70) and hot‑dip galvanized pipe (HS 7306.30) are regularly directed to markets in Southeast Asia, the Middle East, Eastern Europe and the United States. Importers in these regions usually require SGS or Bureau Veritas inspections, a certificate of origin, and, for EU destinations, CE marking that demonstrates compliance with the REACH and Construction Products Regulation. Standard export logistics involve loading coils in wooden crates or bulk bundles onto 20‑foot or 40‑foot containers, while pipes are bundled with steel straps and placed in open‑top containers to avoid damage. FOB Shanghai or Ningbo is the most common Incoterm for Chinese steel shipments, with CIF options offered for buyers preferring port‑to‑port delivery. Furniture and tool items are similarly packed in cardboard boxes or wooden pallets, complying with ISPM 15 phytosanitary treatment for any wooden packaging when destined for the EU or North America.

Sourcing from China Material Industrial Group Ltd. - Buyer Guidance

When sourcing the pre‑painted coils or PPgi coil, request a mill test report, a coating thickness certificate, and a paint finish data sheet that specifies gloss level, VOC content and curing temperature. For the galvanized pipe, ask for a product conformity certificate referencing GB/T 5780 or ASTM A53, a zinc coating weight report, and a pressure test certificate. For the chairs and wrenches, buyers should obtain material safety data sheets, a load‑capacity test report, and, where applicable, compliance with EN 16139 (furniture) or ISO 9001 quality system certificates. Verify packaging dimensions and container loading plans before confirming order quantities; typical minimum order quantities are 1 metric ton for coils, 500 kg for pipe, and 100 units for chairs or wrenches. Lead times from order confirmation to shipment usually range from 30 to 45 days, depending on product type and required certifications.

What HS codes are associated with the steel products listed by China Material Industrial Group Ltd.?

The pre‑painted galvanized steel coils and the PPgi coil are listed under HS code 7210.70, while the hot‑dip galvanized steel pipe uses HS code 7306.30.

Which material standards apply to the galvanized steel pipe?

The pipe is described as carbon steel Q195/Q215/Q235 with a hot‑dip zinc coating, typically conforming to Chinese GB/T 5780 or international ASTM A53 specifications for diameter, wall thickness and pressure rating.

What documentation should a buyer request for the pre‑painted steel coils?

Buyers should ask for a mill test report, a coating thickness certificate, and a paint finish data sheet that details the polyester or polyurethane coating properties.

Are there any typical certifications required for exporting the steel products from China?

Exporters of HS 7210.70 and 7306.30 products commonly provide a certificate of origin, SGS or Bureau Veritas inspection reports, and, for EU shipments, CE marking that covers REACH and construction product directives.

What are the usual packaging methods for the steel coils and pipes?

Coils are generally packed in wooden crates or bulk bundles secured with steel bands, while pipes are bundled with steel straps and loaded in open‑top containers to protect the coating during transit.

What load capacity do the listed office chairs have?

The office chairs are built with steel or aluminum frames and PU foam, typically rated for a static load of 120 kg to 150 kg per chair.

How can a buyer verify the quality of the adjustable wrenches?

Request a material test report confirming chrome‑vanadium steel composition, along with compliance to DIN 912 or ISO 7388 strength grades and a dimensional inspection report for the jaw sizes.

What are the typical lead times for orders from this supplier?

Lead times generally range from 30 to 45 days after order confirmation, depending on product type, required certifications and container loading schedules.