Import Brass Fittings Mold Part Maker — Buy in wholesale FOB from Supplier in China

Dalian Mintadely mould Co., Ltd manufactures precision brass mold parts from CuZn series alloys, typically CuZn39Pb3 or metallurgical equivalents, for plastic injection molding and die-casting tool assemblies. These components leverage brass's thermal conductivity of approximately 120-140 W/(m·K) to optimize heat extraction from mold cavities, reducing cycle times in high-volume production. The supplier's parts are used in semiconductor IC connectors, lead frames, automotive electrical connections, and motor fixed-rotor assemblies, serving tier-one automotive and electronics OEMs.

CuZn39Pb3 (CW614N) contains roughly 57-59% copper, 2.5-3.5% lead, and balance zinc, offering machinability index of 90% relative to free-cutting steel and thermal expansion coefficient of 20.1 x 10⁻⁶/K. Typical hardness for mold-use brass runs 90-110 HV in the work-hardened condition, with dimensional stability maintained through stress-relieving at 260-315°C. Standard tolerances for precision mold inserts are ±0.005 mm for critical dimensions, with surface finishes achievable to Ra 0.4 micrometers or better through precision grinding and lapping. The alloy's low galling tendency against steel mold bases reduces maintenance frequency compared to aluminum bronze alternatives.

Primary buyers include automotive component manufacturers supplying Mercedes-Benz, BMW, Audi, Honda, Toyota, Volkswagen, Nissan, and Mazda tier chains, plus semiconductor packaging houses and precision connector producers. The supplier applies ERP-managed production with design, laboratory, testing center, and R&D functions in-house. Buyers should confirm exact alloy specification, heat treatment condition, and geometric dimensioning and tolerancing (GD&T) protocol before ordering, as the listing emphasizes customized mold solutions rather than catalog standard parts.

Dalian Mintadely mould Co., Ltd is located at No.10-11-3, Northeast Seven Street, Economic Development Zone, Dalian, Liaoning Province, China, postal code 116100. The company was established in 2006 and holds an ISO 9001:2008 quality certification according to its profile. The supplier reports a Harbor trust tier with zero recorded response rate and zero average response hours, indicating limited platform engagement metrics that buyers should not rely upon for responsiveness assessment.

The company operates design and testing departments, a laboratory, an R&D team, and applies ERP system management. It claims supply relationships with automotive brands including Mercedes-Benz, BMW, Audi, Honda, Toyota, Volkswagen, Nissan, and Mazda, though buyers should independently verify any specific supply chain credentials. The listing does not disclose factory floor area, workforce size, annual revenue, machine inventory, or client contact references. The profile emphasizes mold and part design capability alongside manufacturing, positioning itself as a technical partner rather than commodity component supplier.