Import Balance Drum Hpt-300-340-6s — Buy in wholesale FOB from Supplier in China

The balance drum HPT-300-340-6S is a precision-engineered rotating component designed for high-pressure feedwater pump assemblies in thermal power generation systems. This specific model, denoted by the part code HPT-300-340-6S, functions as a hydraulic balancing device that counteracts axial thrust within multi-stage centrifugal pumps. The designation indicates compatibility with pump systems rated for 300 MW class turbine generator sets, with dimensional and pressure parameters scaled to match HPT-series pump configurations. Dongfang Yoyik Engnieering Co., Ltd. lists this component alongside an extensive inventory of power station spares, including hydrophobic pumps, circulating pumps, accumulator bladders, and hydraulic servo valves.

Balance drums in HPT-series pumps are typically manufactured from high-grade stainless steel or corrosion-resistant alloy castings, with precision-machined sealing surfaces and labyrinth grooves to maintain hydraulic equilibrium. The 6S suffix commonly denotes a specific revision or material specification within the HPT-300-340 dimensional family. Standard industry practice requires dynamic balancing to ISO 1940 Grade G2.5 or better for components operating at 3,000 rpm synchronous speed. Typical surface roughness values for the sealing land range from Ra 0.8 to 1.6 micrometres, with runout tolerances held within 0.02 mm per 100 mm of diameter. The component interfaces with wear rings, thrust bearings, and pump shaft assemblies that must maintain concentricity within tight limits to prevent vibration and premature seal failure.

Primary applications include main boiler feedwater pumps, condensate extraction systems, and auxiliary feed pumps in coal-fired, combined-cycle, and nuclear steam turbine plants. Buyers are typically power plant maintenance departments, OEM aftermarket services, and industrial pump repair contractors. The supplier indicates availability from factory inventory, though exact lead times, MOQ, and Incoterms require direct confirmation. Importers should verify dimensional interchangeability with existing pump configurations, as HPT-series components often have manufacturer-specific tolerances that affect fit with non-original equipment.

Dongfang Yoyik Engnieering Co., Ltd. is headquartered in Deyang, Sichuan Province, China, with offices at 4-3F, Building A, Huashan Platz. The company operates within the harbour trust tier of the marketplace, which provides a baseline verification of business registration and operational status. The supplier's response rate is recorded at 0.00 percent with zero average response hours, indicating that direct communication channels may be untested or that the profile reflects limited transactional history through this platform. Buyers should initiate contact to assess current responsiveness and technical support capability before relying on quoted availability.

The company positions itself as a provider of power station equipment solutions with a standard product line and custom design services. Its listed inventory spans multiple industrial sectors including electricity, metallurgy, chemical processing, and mining, with emphasis on flexibility through customised production. The product catalogue visible in this listing demonstrates breadth across hydraulic, pneumatic, and mechanical spares, from precision servo valves to accumulator bladders and pump seals. The listing does not disclose factory size, annual output, workforce numbers, ISO certification status, or specific client references. Importers should request audited quality management credentials and reference installations when evaluating this supplier for critical rotating machinery components.