In the demanding worlds of petrochemicals, nuclear power, and subsea oil and gas, system integrity hinges on the strength of every connection. The Class 2500 high-pressure flanges from Jiangyin Zhonghai Precision Machinery Co., Ltd. are superior connection components specifically engineered to handle extreme pressure and challenging industrial environments.

As a veteran manufacturer certified by ISO 9001, PED, and TS, we go beyond standard ASME/ANSI B16.5 compliance. Leveraging our robust in-house forging and precision machining capabilities, we provide bespoke Class 2500 solutions for both standard and non-standard structures. Whether it is a massive 10-ton forged component or a precision-engineered high-pressure interface, Zhonghai ensures that every flange remains rock-solid under immense pressure.

Core Advantages
·Vertically Integrated Production: Our complete production line—spanning from raw material forging and heat treatment to CNC machining and physical/chemical testing—ensures a dense internal structure and eliminates ·potential material defects.
·Certified Global Compliance: With PED (2014/68/EU) and TUV certifications, all processes strictly adhere to ASTM/ASME technical specifications, meeting the compliance demands of the global energy industry.
·Large-Scale Customization Expertise: We possess the rare capability to produce flanges ranging from 1/2" up to 60", with a maximum diameter of 4 meters and single-unit weights up to 10 tons.
·Technical Consultative Service: Provide us with your material requirements and application scenarios, and our expert team will deliver an optimized manufacturing plan focusing on forging integrity and cost efficiency.

Key Features
·High-Integrity Forging: Utilizing open-die or closed-die forging, we optimize grain flow to ensure superior fatigue and tensile strength for Class 2500 service.
·Micro-Precision Sealing: Sealing faces, particularly Ring Type Joints (RTJ), undergo ultra-precision CNC machining to achieve micron-level tolerances for a perfect metal-to-metal seal.
·Advanced Heat Treatment: Our in-house thermal processing enhances toughness across austenite or martensite structures, tailored for high-pressure, high-temp, or cryogenic environments.
·100% Quality Assurance: Our independent QA department performs rigorous non-destructive testing (PT, MT, or UT) on all Class 2500 products to guarantee zero-defect delivery.

Applications
·Subsea Oil & Gas: Subsea trees and high-pressure flowlines.
·Supercritical Power Plants: Main steam piping and boiler feedwater systems.
·Refining & Petrochemicals: Hydrocracking units, ammonia synthesis, and high-pressure reactors.
·Nuclear Industry: Primary loops and critical pressure-retaining components.
·Aerospace & Defense: High-pressure fluid transport and ground simulation testing systems.