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Precision Metalworks for Demanding Industries

Manufacturer of high-strength structural bolts, threaded studs, nuts, washers, and custom metal components since 1998. ISO-certified, globally trusted.

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About DS Metalworks

Ningbo Dingshen Metalworks Co., Ltd. was founded in 1998 and is located in Ningbo, China. As a member of the Chinese Fastener Association, we specialize in manufacturing high-strength bolts, threaded studs, anchor bolts, screws, nuts, washers, and customized machined parts.

Our products are extensively used in the Oil & Gas, Petrochemical, Power Station, Steelwork Construction, Construction Machinery, and Electrical Equipment industries. We comply with international standards including ANSI/ASTM, DIN, ISO, BS, GB, JIS, and AS.

30,000 m²
Factory Area
200+
Production Units
30+
Testing Devices
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DS Metalworks Factory Workshop

Our Core Principles

Manufacture Excellence

We focus on production process development. Advanced facilities and technical processes are applied in our workshop to ensure precision and consistency.

Quality First

We always put quality first and strictly supervise the product quality at every stage of production, from raw material to final inspection.

Customer Focus

We focus on customer needs. We are not just providing products, but expanding the value of our customers through reliable supply and technical support.

Featured Products

High-strength fasteners and precision metal components engineered to meet international standards and demanding industrial applications.

ASTM A325 Heavy Hex Structural Bolts

ASTM A325 Heavy Hex Structural Bolts

High-strength structural bolts used in steel construction, meeting ASTM A325 standards for tensile strength and durability.

Standard: ASTM A325
ASTM A193 B7 Threaded Stud Bolts

Cadmium Plated A193 B7 Threaded Stud Bolts

Corrosion-resistant threaded studs ideal for high-temperature and high-pressure environments in oil & gas applications.

Standard: ASTM A193 B7
ASTM A194 2H Heavy Hex Nuts

ASTM A194 2H Heavy Hex Nuts

Heavy-duty hex nuts designed to pair with A193 B7 bolts, offering high tensile strength and thermal stability.

Standard: ASTM A194 2H
ASTM A320 L7 Tap End Studs

ASTM A320 L7 Tap End Studs

Double end studs with one end tapped, used in cryogenic and high-pressure applications requiring precise alignment.

Standard: ASTM A320 L7
ASTM F1554 Anchor Bolts

ASTM F1554 Anchor Bolts

Foundation bolts used in structural concrete applications, available in various grades and configurations.

Standard: ASTM F1554
DIN2510 Double End Studs

DIN2510 Double End Studs

Double end studs with reduced shank, manufactured to DIN2510 specifications for precision fit in flange connections.

Standard: DIN2510
Die Casting Lamp Holder

Die Casting Lamp Holder

Precision aluminum die-cast components for lighting fixtures, offering durability and heat resistance.

Material: Zinc/Aluminum Alloy
Metal Stamping Garden Windmill

Metal Garden WindMill

Decorative and functional metal-stamped windmill parts, crafted for outdoor durability and aesthetic appeal.

Process: Metal Stamping
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Our Strength & Capabilities

Advanced Workshop

Equipped with over 200 production units for forging, threading, heat treatment, and surface finishing.

Testing Laboratory

30+ examination devices ensure compliance with mechanical, chemical, and dimensional standards.

Modern Warehouse

Efficient logistics and inventory management for timely global delivery and order fulfillment.

Certified Quality

Compliant with ISO, ANSI, DIN, ASTM, and other international standards. Full traceability and documentation.

25+
Years in Business
30,000+
m² Facility
200+
Machines
30+
Testing Devices

Frequently Asked Questions

What materials do you use for your fasteners?

We use carbon steel, alloy steel, stainless steel (A2-70, A4-70), and other specialized alloys depending on application requirements.

Which international standards do you comply with?

Our products meet ANSI/ASTM, DIN, ISO, BS, GB, JIS, AS, and other global standards. Certifications are available upon request.

Can you produce custom-designed parts?

Yes, we offer OEM and ODM services for custom bolts, studs, nuts, washers, die-cast, and stamped metal components.

What industries do you serve?

We serve Oil & Gas, Petrochemical, Power Generation, Steel Construction, Machinery, and Electrical Equipment sectors globally.

How do you ensure product quality?

We implement strict quality control at every stage — from raw material inspection to final testing in our in-house laboratory.

Get in Touch

For inquiries about our products or pricelist, please visit our official website to contact us directly.

Contact Information

  • +86-574-86521558
  • sales@ds-metalworks.com
  • +86-574-86521998
  • +8618968372550
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