Import Aluminum Gravity Casting — Buy in Bulk from Supplier in China

Aluminum gravity casting from Ningbo Yinzhou Innovaw Mechanical Co., Ltd. is a permanent mold casting process where molten aluminum alloy fills a mold cavity under the force of gravity alone, without applied pressure or vacuum. The supplier operates from Ningbo, Zhejiang Province, and offers castings for automotive, aerospace, and consumer goods sectors. Typical alloys for this process include AlSi7Mg (A356.2) and AlSi10Mg, though the specific alloy for this listing should be confirmed directly. Gravity casting delivers better mechanical properties than sand casting due to faster solidification rates and finer grain structure.

The process yields lightweight yet structurally sound components with excellent surface finish compared to sand casting, typically achieving Ra 3.2 to 6.3 micrometres depending on mold condition and alloy fluidity. Wall thicknesses typically range from 3 mm to 12 mm, with thinner sections possible in high-fluidity alloys. Dimensional tolerances generally conform to ISO 8062 CT7-CT9 grade, tighter than sand casting but looser than high-pressure die casting. Mold materials are usually H13 tool steel or nodular cast iron, with permanent molds lasting 80,000 to 150,000 cycles for aluminum. Heat treatment options include T6 (solution and artificial aging) for AlSi7Mg to achieve tensile strength of 260-320 MPa typical.

Buyers sourcing from this Ningbo supplier should note that no response rate data is currently recorded, so direct enquiry is essential for project feasibility. Applications include engine brackets, pump housings, valve bodies, and structural nodes where pressure tightness and fatigue resistance matter. The supplier mentions ISO and SGS compliance, though specific certificate numbers and scopes require verification. Packaging and Incoterms such as FOB are referenced but not specified in detail; confirm palletisation, seaworthy protection, and exact port of loading before contract. Small-batch prototyping and large production volumes are both cited as possible, with MOQ flexibility claimed.

Ningbo Yinzhou Innovaw Mechanical Co., Ltd. is located at No.666, Tiantong South Road, Ningbo 315010, Zhejiang Province, China. The supplier holds an imported tier classification with a harbor trust tier on this platform. Both response rate and average response hours show as zero, indicating no recent enquiry activity or response data is logged; buyers should initiate direct contact and assess responsiveness during initial negotiations. The company profile does not state founding year, employee count, or factory floor area, so any such claims should be verified independently.

The listing positions the company as a provider of aluminum gravity casting services with flexible MOQ and international shipping under terms such as FOB. No specific certifications are verifiable from the source data beyond references to ISO and SGS, which require confirmation of scope, certificate numbers, and validity dates. Buyers should request a supplier capability audit, recent quality records, and customer references before committing to volume orders.