





About Us
Jining Boswe Industry Technology Co., Ltd
BOSWE INDUSTRY specializes in design, production and supply of precision flanges for global industries, with brand of BORWEX, which is equipped with modern forging lines, CNC machining centers and high-speed drilling equipment, enabling us to efficiently handle large-volume orders as well as meet diverse custom specification requirements.
Every BORWEX flange undergoes a rigorously controlled 12-step production process to ensure dimensional accuracy, structural integrity and compliance with international standards.
The BORWEX flange production process starts with cutting of certified raw materials, followed by material feeding and descaling, before the blanks are transferred to the forging station. During forging and forming, precise pressure and temperature control is applied to achieve specified mechanical properties. The ring rolling process is adopted for flanges to guarantee uniform grain structure across the cross-section. After forming, workpieces go through shaping, CNC machining and high-speed CNC drilling in sequence to satisfy stringent dimensional tolerance requirements.
Each production batch can be traced back to its original material certificate. Finished products are inspected, marked and professionally packaged to ensure safe transportation via international ocean shipment.

Our Core Values
Benevolence
Respect partners, pursue long-term win-win cooperation
Righteousness
Uphold business ethics, refuse cutting corners and improper profits
Propriety
Respect contracts and business etiquette, observe agreed rules
Wisdom
Keep improving technology & expertise, provide professional solutions
Trustworthiness
Honor every commitment, deliver as promised
Our Range
Our Flange Products
We manufacture a comprehensive range of industrial flanges to meet diverse project requirements across global markets.

ASME Flange
American standard flanges including ASME B16.5 and B16.47, widely used in oil & gas, petrochemical and power industries across Americas and Middle East.
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EN Flange
European standard EN1092-1 flanges, meeting strict EU requirements for energy, chemical and industrial sectors.
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GB/T Flange
Chinese national standard flanges, cost-effective solutions for domestic and international projects.
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HG/T Flange
Chemical industry standard flanges, specially designed for corrosive and high-purity applications.
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JIS Flange
Japanese Industrial Standard flanges, meeting high quality requirements for manufacturing and energy sectors.
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KS Flange
Korean Standard flanges, providing stable quality for manufacturing and energy industries.
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Manufacturing Process
From raw material to export-ready product — complete manufacturing control at every step.

Raw Material Cutting

Material Feeding

Descaling

Forging

Ring Rolling Forming

Shaping

Heat Treatment

CNC Rough & Finish Machining

High-Speed CNC Drilling

Inspection & Testing

Marking

Export Packaging
Where We Serve
Industries We Serve
Our flanges are trusted in critical applications across six major industrial sectors worldwide.

Oil & Gas
Flanges for upstream, midstream and downstream operations

Petrochemical
Critical connections in chemical processing plants

Power Generation
High-pressure flanges for thermal and nuclear power

Water Treatment
Corrosion-resistant flanges for water infrastructure

Shipbuilding
Marine-grade flanges for naval and commercial vessels

Machinery
Precision flanges for industrial equipment and systems
Frequently Asked Questions
Find answers to common questions about our flange products and services
A: We offer flanges to ASME B16.5, EN 1092-1, HG/T, GOST 33259, JIS B2220 and KS B1503.
A: Carbon steel (A105, Q235, Q355), stainless steel (304, 316L, F321), alloy steel (F11, F22), duplex steel and special nickel alloys.
A: Class 150, 300, 400, 600, 900, 1500, 2500. DN6, DN10, DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300, DN350, DN400, DN450, DN500, DN600. Big sizes are available.
A: Yes, we can supply these test reports according to clients' request.
A: Yes, we can provide traceability records according to projects needs.
A: Yes. Standard markings including material grade, heat number, size, pressure class and standard code can be stamped on each flange.
A: Yes, small orders, sample orders are available.
A: Yes, besides flange, we also make pipe elbows, tees, reducers, and caps.
A: Our factory is with 20 years experience in casting and forging.
A: Of course. Welcome all partners from the world to visit our factory in any time.
Get In Touch
Contact Us
Ready to discuss your flange requirements? Reach out to our team for quotes, technical support, or partnership inquiries.
Jining BOSWE Industry Technology Co., Ltd
Address
No.16, Shengkang Road, Sishui County, Jining City, Shandong Province, China
Contact
Tina Chen, Global Marketing Director
Website
www.borwex-flange.com