Jiangyin Zhonghai Precision Machinery is an ISO 9001–certified manufacturer with PED / TUV / TS qualifications, specializing in precision flanges and forgings. We produce pipe flanges, forged flanges, machined flanges, and related components according to GB, ASME, ASTM, JIS, EN, DIN standards, and support fully customized, drawing-based manufacturing. Our range covers 1/2'' to 60'', single-piece weights up to 10 tons, and maximum dimensions of 4 meters, providing reliable solutions for both standard and non-standard applications. With complete in-house forging, heating, CNC turning, drilling, and inspection lines, we handle both volume production and complex machined parts.