Hans Mueller
PrecisionAuto GmbH - Germany Excellent precision on DIN standards. The material certification was impeccable and arrived exactly as promised.
Carbon Steel Hot Dip Galvanized Fasteners
our factory specializes in HDG hot dip galvanized fasteners. ISO 9001 certified, supplying galvanized bolts, nuts, anchor bolts and U-bolts to 50+ countries since 1998.
Industrial Grade Hot-Dip Galvanized Hex Bolt & Nut Set | DIN933 Heavy Duty Fasteners
Industrial Grade Hot-Dip Galvanized Hex Bolt & Nut Set | DIN933 Heavy Duty Fasteners
HDG Hot-Dip Galvanized Round Head Guardrail Splicing Bolt
HDG Hot-Dip Galvanized Round Head Guardrail Splicing Bolt
High-Strength HDG Heavy Hex Nuts (ASTM A194 2H / A563) – Precision Overtapped for Structural Joints
High-Strength HDG Heavy Hex Nuts (ASTM A194 2H / A563) – Precision Overtapped for Structural Joints
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Bolts, Anchors & Custom Parts
+25 Years
EXPERIENCE
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VIEW ALL PRODUCTSHDG Galvanized Fasteners & Industrial Bolts
Complete range of hot dip galvanized fasteners including hex bolts, anchor bolts, U-bolts, carriage bolts and threaded rods. DIN/ANSI/ISO standards.
Industrial Grade Hot-Dip Galvanized Hex Bolt & Nut Set | DIN933 Heavy Duty Fasteners
Industrial Grade Hot-Dip Galvanized Hex Bolt & Nut Set | DIN933 Heavy Duty Fasteners
Engineered specifically for heavy-duty operations, this hex bolt features a hot-dip galvanized finish, delivering outstanding corrosion and rust resistance to perfectly adapt to outdoor and humid environments.Manufactured in strict accordance with DIN933 international standards, it ensures seamless compatibility with global supply chains.We offer highly flexible customization services, supporting multiple lengths (20-65mm) and thread specifications (M6-M18). It is widely applied in machinery manufacturing, bridge construction and architectural engineering.With rock-solid quality, it provides you with a reliable fastening solution.
Hot Dip Galvanized U-Bolt and V-Bolt
Hot Dip Galvanized U-Bolt and V-Bolt
These Grade 8.8 HDG U-bolts and V-bolts come complete with matched nuts and washers for easy installation. Made of premium Q235A & Q345B steel, they feature high tensile strength and outstanding outdoor corrosion resistance. Suitable for power, pipeline, fence and mechanical projects, with full size and custom solutions available.
Hot Dip Galvanized Expansion Anchor Bolt
Hot Dip Galvanized Expansion Anchor Bolt
These hot-dip galvanized expansion screws are high-performance anchoring fasteners made of premium carbon steel and manufactured per GB/T standards. Featuring uniform anti-corrosion galvanized coating and strong expansion gripping force, they deliver stable, slip-proof fixing. Available in full M8-M24 sizes, suitable for home decoration, industrial construction, medical equipment and ship fitting installation.
Hot Dip Galvanized DIN603 Carriage Bolt
Hot Dip Galvanized DIN603 Carriage Bolt
Compliant with DIN603 standards, these HDG carriage bolts are made of premium carbon steel in 4.8 and 6.8 grades. Featuring round head and square neck for anti-rotation locking, they ensure tight, stable connections. The hot-dip galvanized coating delivers excellent outdoor anti-corrosion performance. Suitable for construction, machinery, vehicle and agricultural machinery fastening with full size options and custom support.
HDG Hot-Dip Galvanized Round Head Guardrail Splicing Bolt
HDG Hot-Dip Galvanized Round Head Guardrail Splicing Bolt
These HDG round head guardrail bolts with matched nuts are tailor-made for fence and steel structure splicing. Made of premium carbon steel with hot-dip galvanized finish, they offer great outdoor rust resistance and stable tensile strength. Burr-free round head ensures safe installation. Multiple sizes and strength grades are available with custom services for various municipal and traffic projects.
High-Strength HDG Heavy Hex Nuts (ASTM A194 2H / A563) – Precision Overtapped for Structural Joints
High-Strength HDG Heavy Hex Nuts (ASTM A194 2H / A563) – Precision Overtapped for Structural Joints
HDG heavy hex nuts comply with ASTM A194/A563/DIN6915, thicker and wider across flats for high torque with A325/A490 structural bolts. Galvanized blanks are CNC overtapped (+0.4–0.8mm) for smooth assembly without thread seizure. Internal bare threads get cathodic protection from HDG bolts. Heat-treated alloy steel meets Grade 2H/DH specs, no material grade counterfeiting. Widely used for pipeline flanges, steel bridges and machinery anchors, moisture-sealed cartons & pallets for sea export with full MTR certificates available.
Need custom specifications? Contact our engineering team for technical guidance.
Quality Assurance
ISO 9001 Certified HDG Fastener Manufacturing
Advanced hot-dip galvanizing lines and cold-forging facilities ensuring superior corrosion resistance and dimensional precision.
100%
Inspection Rate
Our Capabilities
25+ Years of Fastener & Galvanizing Expertise
our factory is a leading manufacturer of HDG hot dip galvanized fasteners. With over 25 years of experience, we specialize in galvanized bolts, anchor bolts, U-bolts and custom fasteners for global infrastructure projects.
HDG Zinc Coating Expertise
Consistent hot-dip galvanizing per ISO 1461 with 45-85 micron zinc coating for maximum corrosion protection in marine, industrial and outdoor environments.
Precision Manufacturing
CNC machining and cold-forging lines producing DIN/ANSI/ISO fasteners with 100% inspection rate. Full material test certificates per EN 10204 3.1.
Global Clients
Trusted by HDG Fastener Buyers Worldwide
International buyers rely on our hot dip galvanized fasteners for critical infrastructure and industrial projects.
Kenji Tanaka
Nippon Robotics Corp - Japan Quality consistency is paramount for our robotics assembly line. The dimensional accuracy of their custom bolts is world-class.
Wei Chen
AeroLogic Asia - Singapore Supply chain reliability is critical for our hub. our factory has consistently met our lead times for high-volume orders.
Alistair Vance
Maritime Tech Ltd - United Kingdom Exceptional technical support. Their engineering team helped us optimize our fastener specifications for North Sea maritime environments.
Elena Rodriguez
AutoManufactura SA - Mexico Reliable high-volume production. Their ability to scale for our automotive plant expansions has made them a key strategic partner.
Hans Mueller
PrecisionAuto GmbH - Germany Excellent precision on DIN standards. The material certification was impeccable and arrived exactly as promised.
Kenji Tanaka
Nippon Robotics Corp - Japan Quality consistency is paramount for our robotics assembly line. The dimensional accuracy of their custom bolts is world-class.
Wei Chen
AeroLogic Asia - Singapore Supply chain reliability is critical for our hub. our factory has consistently met our lead times for high-volume orders.
Alistair Vance
Maritime Tech Ltd - United Kingdom Exceptional technical support. Their engineering team helped us optimize our fastener specifications for North Sea maritime environments.
Elena Rodriguez
AutoManufactura SA - Mexico Reliable high-volume production. Their ability to scale for our automotive plant expansions has made them a key strategic partner.
Hans Mueller
PrecisionAuto GmbH - Germany Excellent precision on DIN standards. The material certification was impeccable and arrived exactly as promised.
Kenji Tanaka
Nippon Robotics Corp - Japan Quality consistency is paramount for our robotics assembly line. The dimensional accuracy of their custom bolts is world-class.
Wei Chen
AeroLogic Asia - Singapore Supply chain reliability is critical for our hub. our factory has consistently met our lead times for high-volume orders.
Alistair Vance
Maritime Tech Ltd - United Kingdom Exceptional technical support. Their engineering team helped us optimize our fastener specifications for North Sea maritime environments.
Elena Rodriguez
AutoManufactura SA - Mexico Reliable high-volume production. Their ability to scale for our automotive plant expansions has made them a key strategic partner.
Hans Mueller
PrecisionAuto GmbH - Germany Excellent precision on DIN standards. The material certification was impeccable and arrived exactly as promised.
Kenji Tanaka
Nippon Robotics Corp - Japan Quality consistency is paramount for our robotics assembly line. The dimensional accuracy of their custom bolts is world-class.
Wei Chen
AeroLogic Asia - Singapore Supply chain reliability is critical for our hub. our factory has consistently met our lead times for high-volume orders.
Alistair Vance
Maritime Tech Ltd - United Kingdom Exceptional technical support. Their engineering team helped us optimize our fastener specifications for North Sea maritime environments.
Elena Rodriguez
AutoManufactura SA - Mexico Reliable high-volume production. Their ability to scale for our automotive plant expansions has made them a key strategic partner.
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HDG Knowledge Base
HDG Hot Dip Galvanizing FAQ
Technical answers about hot dip galvanized fastener specifications, standards and procurement.
Industrial fasteners are precision-engineered mechanical components — including bolts, screws, nuts, washers, anchors, and rivets — used to join or secure materials in construction, automotive, aerospace, and heavy machinery. They are manufactured to international standards such as DIN, ANSI, ISO, and JIS, and are available in carbon steel, stainless steel, alloy steel, and brass with various surface finishes.
Need Technical Assistance?
Our engineering team provides quick quality validation and material specification consulting for your specific project.
Get a detailed manufacturing timeline and bulk pricing within 24 hours.
Phone Support: +86 15632029222
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Industry Insights
View All NewsHDG Fastener Industry Updates
Latest developments in hot dip galvanizing technology and fastener industry trends.
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