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Premium Stainless Steel & Super Alloy Fasteners for Critical Applications

HYI Industry is a trusted global supplier of high-performance fasteners, CNC machined parts, and ophthalmic instruments made from stainless steels, Hastelloy, super duplex, and exotic materials. Engineered for oil & gas, valves, pumps, and precision engineering sectors.

15+

Years Experience

50+

Countries Served

99.8%

Quality Compliance

Industrial Fasteners
HYI Industry Facility

About HYI Industry

Hung Yuet Industry Limited Co., Ltd. is a customer-focused manufacturer and supplier of high-quality fasteners, CNC machined parts, and ophthalmic surgical instruments. With years of expertise in the bolting industry, we are committed to delivering excellence in every product.

We specialize in manufacturing standard and special fasteners according to international standards including DIN, ANSI, ASME, GB, ISO, and custom drawings. Our materials include stainless steels, super alloys, and exotic metals designed for critical applications in oil & gas, valve, pump, engineering, and construction markets.

ISO & 3.1 Test Certified
Custom Solutions Available
Global Supply Chain
NDT & Destructive Testing

Our Main Products

We offer a comprehensive range of high-performance fasteners, precision machined parts, and medical instruments engineered for reliability and durability in extreme environments.

Stud Bolts

Stud Bolts

High-strength stud bolts manufactured from stainless steel, alloy steel, and super alloys. Available in various lengths, diameters, and thread types per ASME, DIN, and customer specifications.

  • • Materials: SS304, SS316, Inconel, Hastelloy
  • • Standards: ASME B16.5, DIN 975, ISO 898
  • • Applications: Flange connections, pressure vessels
Hex Nuts

Hex Nuts

Precision-engineered hex nuts designed for high-torque applications. Made from corrosion-resistant materials suitable for harsh environments in oil & gas and marine industries.

  • • Grades: 2H, 2HM, 7H
  • • Coatings: Zinc, Dacromet, PTFE
  • • Compliance: ASME B18.2.2, DIN 934
Headed Bolts

Headed Bolts

Fully threaded and partially threaded headed bolts with precision heads for structural and mechanical applications requiring high tensile strength and fatigue resistance.

  • • Types: Hex Head, Socket Head, Button Head
  • • Materials: A193 B7, B8, B8M, F51, F55
  • • Finish: Passivated, Pickled, Sandblasted
Special Parts

Special Parts

Custom CNC machined components produced according to customer drawings and technical specifications. Ideal for replacement parts and unique engineering solutions.

  • • Tolerances: ±0.01mm
  • • Processes: Turning, Milling, Drilling
  • • Materials: Exotic Alloys, Titanium, Monel

Washers

High-performance washers including flat, spring, and locking types made from stainless steel and corrosion-resistant alloys for sealing and load distribution.

  • • Standards: ASME B18.22, DIN 125, DIN 127
  • • Sizes: M3 to M100
  • • Surface: Plain, Zinc Plated, Hot Dip Galvanized

Super Duplex Bolts

High-strength super duplex stainless steel bolts with excellent resistance to chloride stress corrosion cracking, pitting, and crevice corrosion.

  • • Material: UNS S32750, S32760 (F53, F55)
  • • Applications: Offshore, Desalination, Chemical
  • • Certifications: NACE MR0175, 3.1 Test Reports

Hastelloy Fasteners

Premium Hastelloy bolts, nuts, and washers engineered for extreme chemical and high-temperature environments where standard alloys fail.

  • • Grades: C276, C22, B2, X
  • • Features: Oxidation & pitting resistant
  • • Industries: Petrochemical, Pollution Control

Ophthalmic Instruments

Precision surgical instruments for ophthalmology, manufactured with medical-grade stainless steel and strict quality control for sterile environments.

  • • Types: Forceps, Scissors, Retractors
  • • Compliance: ISO 13485, CE Marked
  • • Finish: Electropolished, Passivated

Why Choose HYI Industry?

We combine advanced manufacturing capabilities with rigorous quality assurance to deliver reliable, high-performance components trusted by global industries.

Certified Quality

Full inspection and testing including 3.1 test reports, third-party certification, NDT, and destructive testing for complete traceability.

Advanced Machining

State-of-the-art CNC machining centers ensure precision tolerances and consistent quality across all custom and standard parts.

Global Reach

Reliable logistics and supply chain network serving clients in over 50 countries with on-time delivery and responsive support.

Technical Support

Expert engineering team provides tailored advice, material selection guidance, and technical documentation for complex applications.

15+

Years in Industry

500+

Product Variants

50+

Countries Served

99.8%

Customer Satisfaction

Frequently Asked Questions

What materials do you offer for fasteners?

We manufacture fasteners from stainless steels (304, 316, 321, etc.), super duplex (F51, F53, F55), nickel alloys (Inconel, Monel, Hastelloy), titanium, and other exotic materials based on application requirements.

Can you produce custom parts from drawings?

Yes, we specialize in manufacturing special parts according to customer-provided drawings and technical specifications using advanced CNC machining processes.

Do you provide test certifications?

Yes, we offer full material traceability with 3.1 test reports and third-party inspection reports (e.g., SGS, BV) upon request. NDT and destructive testing are also available.

What industries do you serve?

Our products are used in oil & gas, petrochemical, power generation, marine, construction, valve & pump manufacturing, and medical (ophthalmic instruments) sectors.

How can I request a quote?

Please contact us directly via email or phone with your requirements, drawings, or specifications. Our technical team will respond promptly with a detailed quotation.

Get in Touch

Contact HYI Industry for inquiries, quotations, or technical support. We’re ready to assist with your fastener, machined part, or ophthalmic instrument needs.

Add: No.17 Jiankang Road, Sihong, Suqian, Jiangsu, China
Phone: +86 189-0524-0421 / +86-527-8626-9668
Email: info@hyuetindustry.com
WhatsApp: +86-189-0524-0421
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Send Us a Message

For product inquiries or technical support, please visit our official website to submit your request.

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