Engine spare parts

Unisin Marine Equipment Co., Ltd supplies engine spare parts designed for industrial and marine diesel engines, including cylinder liners compatible with Sulzer rd44, rn44, rnd68/68m, rnd76/76m, rnd90/90m, and Mitsubishi uet45/75c, uet4 models. These components are manufactured to match original equipment dimensions and tolerances, ensuring direct interchangeability without modification. The parts are produced using high-grade cast iron or alloy steel, selected for thermal stability and wear resistance under sustained load.

Typical wall thickness for cylinder liners in this category ranges from 8 to 12 mm, with bore tolerances held within ±0.02 mm. Surface finish is typically ground to 0.4 Ra or finer to reduce friction and oil retention. While the listing mentions compatibility with specific engine models, it does not confirm whether parts are forged or cast, or if they undergo heat treatment. Industry-standard materials include ASTM A48 Class 35 or equivalent grey iron for liners, with chromium plating sometimes applied for enhanced durability.

These parts are primarily sourced by repair workshops servicing marine vessels, power generation units, and heavy machinery fleets. Buyers typically require batch quantities of 10 to 50 units per order, depending on engine overhaul schedules. Packaging is usually in sealed cardboard boxes with individual foam inserts to prevent damage during transit. Trade terms are not specified in the listing; buyers should confirm Incoterms, lead time, and minimum order quantity directly with the supplier before placing an order.

Unisin Marine Equipment Co., Ltd is based in Shanghai, China, with its registered address at 2nd Floor, C Building, 5#248, Xinshi Road. The company is listed as an imported supplier with harbor-level trust tiering, indicating it has passed basic platform verification for business registration and contactability. No details are provided about years in operation, workforce size, or production capacity. The listing does not mention any factory ownership, export history, or third-party audit reports.

The company appears to function as a trading entity rather than a manufacturer, sourcing engine spare parts for export. There is no public information on internal quality control processes, lab testing capabilities, or direct partnerships with OEMs. Response rate and average response time are recorded as zero, suggesting limited or no active communication channels. Buyers should treat this supplier as a reseller and request documentation for each shipment before payment.