In demanding applications such as petrochemical processing, marine engineering, and pharmaceutical manufacturing, the integrity of piping connections is paramount. Jiangyin Zhonghai Precision Machinery Co., Ltd. specializes in producing F316, 316L, and 316Ti stainless steel flanges that utilize premium raw materials and strictly controlled forging processes to ensure exceptional durability under extreme chemical media and high-pressure conditions.

As an ISO 9001, PED, and TS certified manufacturer, Zhonghai Precision provides not only standard components following ASME, DIN, and EN specifications but also specializes in heavy-duty custom manufacturing. With a lifting capacity of 10 tons and a maximum diameter of 4 meters, we solve the most complex large-scale flange challenges for our global clientele.

Core Advantages
·Vertically Integrated Production: Our in-house facility covers the entire lifecycle—from pre-heating and open-die/die forging to CNC machining and physical/chemical testing—ensuring total quality control.
·Stringent Material Compliance: We strictly adhere to ASTM/ASME A182 standards. For 316Ti, our optimized heat treatment ensures maximum resistance to intergranular corrosion in high-temperature services.
·Heavy-Scale & Bespoke Expertise: Covering sizes from 1/2" to 60", we offer rapid evaluation and manufacturing for non-standard components and oversized flanges (up to 4m) based on your specific blueprints.
·Global Certification Standards: Holding PED/TUV and TS licenses, our products meet the rigorous safety and market access codes of international engineering projects.

Key Features
·Excellent Corrosion Resistance: The molybdenum content in the 316 series provides high resistance to chloride pitting, while 316Ti offers enhanced stability against corrosion in the 425°C-815°C range.
·Refined Forged Structure: Our forging process optimizes metal grain flow, eliminating internal porosity and segregation to ensure superior mechanical strength at pressures up to 2500lb.
·Precision Face Machining: High-precision CNC turning ensures that sealing surfaces (RF, RTJ, etc.) meet exact flatness and roughness requirements for zero-leakage performance.
·Rigorous Quality Assurance: An independent QA department conducts PMI (Positive Material Identification), Ultrasonic Testing (UT), and intergranular corrosion tests to guarantee defect-free delivery.

Applications
·Offshore Engineering: Oil rigs, desalination plants, and marine piping.
·Petrochemical & Refining: High-pressure corrosive lines, reactor interfaces, and acidic media transport.
·Pharmaceuticals & Food: Sanitary systems requiring high surface finish and material purity.
·Energy & Power: High-temperature steam cycles in thermal and nuclear power plants.