Jiaxing SUNFAST Metal Co., Ltd. | High-Quality Metal Fasteners & Threaded Rods

About Jiaxing SUNFAST Metal Co., Ltd.

Founded with a commitment to quality and precision, Jiaxing SUNFAST Metal Co., Ltd. has emerged as a trusted manufacturer of industrial fasteners in China. Our expertise lies in producing high-strength threaded rods, B7 studs, hex nuts, flat washers, and complete fastener assemblies for demanding applications across oil & gas, construction, power generation, and infrastructure.

Located in Jiaxing, Zhejiang Province, our modern facility in Xinhuang Industrial Park is equipped with advanced machinery and operated by a skilled team dedicated to meeting international standards. We serve clients across Asia, Europe, North America, and the Middle East with reliable supply chains and responsive customer service.

Industrial-Grade Manufacturing

ISO-compliant production with strict quality control

Our Product Range

We manufacture a comprehensive range of high-performance fasteners designed for durability, precision, and reliability in critical applications.

Threaded Rod

High-tensile steel rods with continuous threading, available in various diameters and lengths. Ideal for structural anchoring, suspension systems, and mechanical assemblies.

Material: Carbon Steel, Stainless Steel
Standards: ASTM A307, DIN 975
Diameter Range: M6 – M64
Length: Customizable up to 6 meters

B7 Threaded Rod

Quenched and tempered alloy steel rods meeting ASTM A193 B7 specifications. Designed for high-pressure and high-temperature environments such as refineries and power plants.

Material: AISI 4140 / 4142
Standard: ASTM A193 B7
Tensile Strength: ≥105 ksi
Temp Range: -50°F to 800°F

Threaded Studs

Fully threaded studs with chamfered ends, used in flange connections, pressure vessels, and pipeline systems. Available in double-end and stud bolt configurations.

Types: Double End Studs, Tap End Studs
Standards: ASME B16.5, API 6A
Diameter: 1/2" to 4"
Finish: Plain, Hot-Dip Galvanized, Zinc Plated

Hex Nuts

Precision-machined hexagonal nuts compatible with threaded rods and studs. Manufactured to ensure consistent torque and load distribution.

Material: Carbon Steel, Alloy Steel, Stainless Steel
Standards: ASTM A194, DIN 934, ISO 4032
Grades: 2H, 7H, 8H
Coatings: Zinc, Dacromet, Xylan

Flat Washers

High-quality flat washers used to distribute load and prevent damage under bolt heads and nuts. Ideal for structural and mechanical fastening.

Material: Low Carbon Steel, Stainless Steel
Standards: ASTM F436, DIN 125
Diameter Range: M5 – M64
Finish: Plain, Galvanized, Phosphated

Fastener Assembly

Complete pre-assembled kits including studs, nuts, washers, and optional lubricants. Custom-configured for flange sizes and pressure ratings.

Applications: Piping, Vessels, Heat Exchangers
Standards: ASME, API, EN
Custom Kits: By RFN, RTJ, or Tongue & Groove
Traceability: Full material certification available

Stainless Steel Rods

Corrosion-resistant threaded rods in 304, 316, and 321 grades. Suitable for marine, chemical, and food processing environments.

Grades: SS304, SS316, SS321
Standards: ASTM A193 B8, B8M
Finish: Passivated, Pickled
Thread Type: UNC, UNF, Metric

Custom Stud Bolts

Engineered stud bolts with variable thread lengths, reduced shanks, and specialty materials for OEM and project-specific requirements.

Customization: Length, Diameter, Thread Pitch
Materials: Alloy Steels, Duplex, Inconel
Testing: UT, PMI, Hardness, Tensile
Delivery: Just-in-Time (JIT) options available

Why Choose SUNFAST?

We combine advanced manufacturing, rigorous quality control, and customer-focused service to deliver fasteners you can trust.

Certified Quality

ISO 9001 compliant processes with full traceability and material test reports (MTRs) available for every batch.

Advanced Facility

State-of-the-art plant in Xinhuang Industrial Park with CNC threading, heat treatment, and automated inspection systems.

Global Reach

Exporting to over 30 countries with reliable logistics partners and on-time delivery performance above 98%.

Dedicated Support

Technical sales team available to assist with material selection, drawings, and project-specific fastener solutions.

Frequently Asked Questions

What materials do you offer for threaded rods?

We manufacture threaded rods in carbon steel (ASTM A307), alloy steel (ASTM A193 B7), and stainless steel (304, 316, B8, B8M). Custom materials like Inconel and Monel are also available upon request.

Can you provide material certifications?

Yes, we provide full Material Test Reports (MTRs) in accordance with EN 10204 3.1 or 3.2, including chemical composition, mechanical properties, and heat treatment records.

What is your minimum order quantity (MOQ)?

Our standard MOQ is 500 kg per size and grade. However, we can accommodate smaller trial orders for new customers. Sample requests are welcome.

Do you offer custom packaging?

Yes, we provide custom packaging including wooden crates, steel pallets, and moisture-proof wrapping for sea freight. Labeling can be customized per project requirements.

What are your lead times?

Standard products: 15–20 days. Custom orders: 25–35 days depending on complexity. Express production options are available for urgent needs.

Get in Touch

Contact Jiaxing SUNFAST Metal Co., Ltd. for product inquiries, quotes, or technical support.

Contact Information

Phone: +86 573 8428 8620

Email: [email protected]

Office: Rm 1310, HuiJin Building, LuoXing Street, JiaShan, JiaXing, 314100, China

Factory: Xinhuang Industrial Park, Fengqiao Town, South Lake District, JiaXing, China

Send Us a Message

For inquiries about our products, please visit our official website to submit your request. Our team responds within 24 hours.

Visit Official Website to Contact

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