Q345R Carbon Steel Head 219mm Diameter Elliptical Dished Heads For Tanks

Henan Guojiang Precision Head Co., Ltd. was founded in 2013. Our company is a professional Chinese manufacturer of precision heads integrating R&D, production and sales, and has currently obtained certifications such as the ASME Authorisation Certificate, the ISO 9001 Quality Management System Certification and Class A Certification of China Chemical Industry Equipment Association. Our company is located in Xinxiang City, Henan Province, China. As a core agglomeration area of China’s head industry, this region boasts unique advantages in technical and human resources, and is known as the "Capital of China's Heads".

As a benchmark enterprise in the precision head manufacturing field, Guojiang has over 12 years of experience in R&D, production and customisation of various heads. Our customers cover more than 10 countries worldwide, including Russia, the United States, the European Union, South Korea, Vietnam, etc.

Our company implements strict quality control at every stage of production and is committed to technological innovation to meet clients' needs for customisation, high precision, and superior quality across various industries.

• The flatness of high-precision flat head closures is controlled within 3mm, fulfilling the requirements of clients in the magnetic resonance equipment industry.
• The surface roughness of polished head closures can be maintained within 0.4μm, meeting the stringent surface quality standards of high-end medical and food manufacturing clients.
• The development of reduced-opening head closures has minimised welding workload for clients in industries such as pressure vessels, reduced costs for components like gaskets, bolts, and flanges, and enabled smooth structural transitions in equipment.

At present, our company has more than 70 sets of main production equipment, capable of processing dished heads with a diameter ranging from 76 mm to 10,000 mm and a thickness ranging from 1 mm to 200 mm, with an annual output of over 400,000 units. The main production equipment includes:

• 12 hydraulic presses (ranging from 200 to 39,000 tons)
• 3 spinning machines;
• 3 drum pressing machine;
• 5 laser cutting and plasma cutting machines (with power from 4,000W to 20,000W)
• 10 head edge-cutting machines;
• 8 head closing machines;
• 1 automatic edge-cutting and end closing integrated machines;
• 5 drilling machines;
• 5 lathes;
• 8 polishing machines 

We operate a full suite of core post-processing equipment, including heat treatment furnaces, NDT facilities, and pickling tanks, ensuring complete in-house control.

• Heat Treatment Furnaces: Precisely enhance mechanical properties and relieve stress for superior strength and toughness.
• NDT Facilities: Guarantee structural integrity and safety through rigorous non-destructive testing.
• Pickling Tanks: Improve corrosion resistance and extend service life via professional surface treatment.

Full in-house control guarantees superior head quality, reliable delivery, and greater value for your business.

We are proud to collaborate with industry leaders worldwide, spanning sectors including:

• Pressure Vessels
• MRI Equipment
• Water Filtration & Treatment Systems
• Papermaking Machinery
• Medical Devices
• Cryogenic Gas Equipment
• Beer Brewing Equipment

Adhering to the business philosophy of "Craftsman's Spirit, Quality as Gold", Guojiang strictly controls every production process and takes product quality and customer trust as the long-term goals of the enterprise.