从China供应商批发进口20kg Calibration Weights — FOB条款

The 20kg calibration weights are precision measurement artifacts designed for scale calibration, metrology laboratory use, and industrial weighing system verification. These weights are manufactured in accuracy classes E1, E2, F1, F2, and M1, with the specific class determining the tolerance and intended application ranging from reference standards to commercial weighing verification. The weights are constructed from stainless steel with density values ranging from 7.85 to 8.00 g/dm3 depending on the accuracy class, with higher precision classes using materials with tighter density tolerances.

The available material options include SUS304, SUS316L, and JF-1 stainless steel grades, each offering different magnetic susceptibility characteristics critical for balance calibration accuracy. Magnetic susceptibility values range from less than or equal to 0.05 for standard applications down to 0.006 for the highest precision requirements, ensuring compatibility with different types of weighing instruments. The 20kg weight features a cylindrical one-piece construction with mirror polish finish, providing optimal handling characteristics and resistance to surface contamination during repeated use.

Target buyers include calibration laboratories, industrial quality control departments, pharmaceutical companies, food processing facilities, and weighing equipment service providers requiring traceable weight verification. The product serves metrology institutions, testing and certification bodies, and manufacturing facilities with quality management systems requiring regular scale calibration documentation. Importers should specify the required accuracy class based on their calibration application and verify magnetic susceptibility requirements with their weighing equipment manufacturer.

W&J Instrument Co., Ltd. is located in Qianjia Industrial Park, Changzhou City, Jiangsu Province, with postal code 213011. The supplier operates from Changzhou, a city in the Yangtze River Delta region known for precision instrument manufacturing in eastern China. The listing shows a harbor-tier trust classification with a 0% response rate and average response hours not available, indicating limited recent platform activity.

The company specializes in calibration weights and precision measurement instruments for industrial and laboratory applications. The product listing provides comprehensive accuracy class information, material options, density specifications, and magnetic susceptibility data, demonstrating technical knowledge of metrology requirements. The listing does not specify minimum order quantities, pricing, production capacity, or delivery times. The supplier profile does not include company establishment year, employee count, export market details, or accreditation certifications such as ISO 17025.