Import Best Price Ppgi Roofing Steel Coil — Buy in wholesale FOB from Supplier in China

Changzhou Baoshi Steel Co., Ltd. supplies pre-painted galvanised steel coil (PPGI) for roofing and wall cladding applications, manufactured to JIS G3312 and ASTM A755M standards. The substrate is zinc-coated steel with an organic paint system applied after galvanising, combining corrosion resistance with architectural colour stability. Available grades include JIS G3312 CGCC and CGC340 through CGC570 (G550), and ASTM A755M CS-B with structural grades SS255 through SS550, covering formable through high-strength requirements. Width range is 600 mm to 2000 mm and thickness spans 0.15 mm to 1.5 mm, accommodating everything from residential tile-profile roofing to deep-drawn industrial cladding panels. Coil weights run 2-5 metric tonnes with inner diameters of 508 mm or 610 mm, the latter matching standard uncoiler mandrels common in automated roll-forming lines.

The zinc coating layer ranges from 40 to 400 g/m², with heavier coatings providing extended service life in corrosive environments such as coastal or industrial atmospheres. Chemical pretreatment options include chromated surfaces with trivalent chromium (Cr3+), hexavalent chromium (Cr6+), or chromium-free (0+) systems, depending on regulatory requirements in the destination market. Surface finish choices cover skin-passed or non-skin-passed substrate, with spangle patterns available as regular, zero, or big spangle, affecting paint adhesion and final aesthetic appearance. Oil film can be specified as slight oiled for transit corrosion protection or dry for immediate powder coating or adhesive lamination. The paint system typically comprises a primer and topcoat, though exact film thicknesses, colour ranges, and warranty periods against chalking and fade are not stated and require direct confirmation.

Primary buyers include roll-forming contractors, metal roofing distributors, prefabricated building manufacturers, and construction material traders serving residential, commercial, and industrial projects. The stated MOQ is 20 tonnes, equivalent to approximately four to ten coils depending on specification, which aligns with containerised export economics. Packaging is described as export standard, which for steel coil typically involves VCI film, steel edge protectors, and circumferential steel strapping on wooden or steel pallets. The supplier's location in Changzhou, Jiangsu Province, places it within China's most concentrated region for flat steel production and coating line capacity, with access to Shanghai port for international shipment. Buyers should confirm whether the supplier operates its own coating line or trades on mill allocation, as this affects technical support capability and delivery scheduling flexibility.

Changzhou Baoshi Steel Co., Ltd. is located at Room 2002, Block B, No.16 Yanzheng Middle Road, World Trade Center, Changzhou, Jiangsu Province, China, postal code 213161. The World Trade Center address indicates office rather than manufacturing premises, suggesting the company operates as a trading enterprise or sales office rather than a direct manufacturer with on-site coil coating facilities. Jiangsu Province hosts numerous steel service centres and coating lines, so production may be outsourced to third-party processors or arranged through mill partnerships. The harbour trust tier indicates basic profile verification with no response rate data available, meaning buyers should expect to conduct independent due diligence on operational capacity and financial standing.

The supplier lists special custom specifications including grade and dimensional flexibility, which implies either direct mill relationships or substantial trading volume sufficient to negotiate production slots. No information is provided about year of establishment, registered capital, annual turnover, number of employees, or major client references, and these gaps should be addressed during qualification. The product positioning targets Southeast Asia, Africa, and the Middle East, suggesting experience with developing-market certifications and less stringent coating specifications, though buyers in regulated markets should verify compliance with local building codes and environmental regulations on chromium content and VOC emissions from paint systems.