从China供应商批发进口3003 Aluminium Circle — FOB条款

3003 aluminium circle from Henan Sigma Aluminum Industry Co., Ltd is a cold-formed, deep-drawable disc cut from Al-Mn alloy sheet, supplied in temper O, H14, H24, H18 or H22 with thickness from 0.2mm to 5mm and diameter from 150mm to 1300mm. The alloy contains manganese as the primary alloying element, which delivers corrosion resistance superior to pure aluminium and work-hardening characteristics suited to spinning and stamping operations. The source data confirms ISO 9001:2008 quality system registration and SGS inspection capability, with palletised export packaging and dispatch from Qingdao or Tianjin port.

The material begins as heavy melt aluminium with measured alloying additions, then passes through continuous casting, hot rolling, cold rolling, and annealing sequences to achieve the specified temper and mechanical properties. Typical tensile strength for H14 temper is 145-195 MPa, with typical elongation of 5-20% depending on gauge and heat treatment; these values are standard for 3003-O and work-hardened variants across the industry. Surface finish is mill bright silver, though colour matching to customer requirement is offered. The circles exhibit good formability for deep drawing, resistance to both atmospheric and chemical corrosion, and thermal conductivity appropriate for heat-spreader applications.

Primary buyers span lighting fixture manufacturers, cookware producers seeking spun or stamped blanks, traffic-sign fabricators, and kitchen-utensil makers. The 1-tonne MOQ stated in the source suits mid-volume procurement, though buyers should confirm current minimums and stock availability directly with the supplier. Applications extend to reflectors, lamp housings, non-stick pan bases, and cooking-pot bodies where the alloy's combination of moderate strength, weldability, and food-contact compatibility is valued. The supplier notes that specific alloy-temper combinations outside the listed range can be produced to request, so custom dimensional or mechanical requirements should be raised during technical discussion.

Henan Sigma Aluminum Industry Co., Ltd maintains its registered office at 2411 Building Wangding International, Shangwuwaihuan Road, Zhengzhou, Henan Province, China. The supplier holds harbour-tier verification status on the platform, though prospective buyers should note that both response rate and average response time currently show zero activity, indicating no recent quotation history through this channel. The address places the company in Zhengzhou's commercial district rather than at a production facility, which is common for trading offices or sales subsidiaries in China's aluminium sector.

The listing emphasises direct manufacturer status with factory pricing, alongside formability and corrosion resistance as product advantages. No production capacity, year of establishment, employee count, or specific plant location is disclosed in the source material. Buyers should therefore verify actual production capability, in-house quality control procedures, and whether the company operates its own rolling mill or sources substrate from partner mills. The ISO 9001:2008 registration is cited; confirmation of current certificate validity and scope, plus any additional automotive or aerospace quality approvals, Integrity of supply chain documentation, should be requested during due diligence.