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Premium Alloy Fasteners
from China

Factory-direct supply of Inconel, Monel, Hastelloy, Duplex Stainless Steel, and Nickel-based superalloy bolts, nuts, studs, and washers. Engineered for extreme environments — corrosion-resistant, high-strength, and precision-made.

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About China Special Bolts, Inc.

Established in 2005, China Special Bolts, Inc. is a high-technology manufacturer located in the alloy industrial park of Shiyan Town, Dongtai City, Jiangsu, China. With over 15,000 square meters of production space and more than 18 years of specialized experience, we are a trusted source for high-performance alloy fasteners.

We produce bolts, nuts, studs, threaded rods, and washers in compliance with ASME, ASTM, and DIN standards. Our commitment to quality, innovation, and direct factory sales ensures competitive pricing without compromising performance.

2005
Founded
15K+
m² Facility
18+
Years Experience
Global
Exports
Factory Production Line

Why Choose CSBI?

Our values drive quality, reliability, and customer satisfaction.

Factory Direct

Eliminate middlemen. We sell directly from our factory, ensuring best pricing and full traceability.

Precision Craftsmanship

Using mature production technology and standard materials to deliver consistent, high-quality fasteners.

High-Quality Standards

Our products meet ASME, ASTM, and DIN specifications and are recognized globally for performance.

Customer Care

Professional team, strict quality control, and attention to detail in every production phase.

Our Premium Fasteners

High-performance bolts, nuts, studs, and washers in exotic alloys for extreme industrial applications.

Inconel 718 Bolt

Inconel 718 Bolt

High-strength, corrosion-resistant superalloy bolt for aerospace and high-temperature applications.

ASTM B637 / ASME SA-453
Incoloy 925 Nut

Incoloy 925 Nut

Corrosion-resistant alloy nut ideal for offshore and chemical processing environments.

ASTM B805 / ASME SA-564
Nimonic 80A Stud

Nimonic 80A Stud

Precipitation-hardening nickel-based alloy stud for high-temperature turbine applications.

AMS 5737 / ASTM B637
Inconel 625 Washer

Inconel 625 Washer

Corrosion and oxidation-resistant washer for marine and chemical environments.

ASTM B446 / ASME SB-446
A-286 (Gr660) Bolt

A-286 (Gr660) Bolt

High-strength, heat-resistant stainless steel bolt for aerospace and automotive industries.

ASTM A453 / ASME SA-453
Duplex F53 (S31803) Nut

Duplex F53 (S31803) Nut

High-strength, duplex stainless steel nut with excellent chloride stress corrosion resistance.

ASTM A193 / ASME SA-193
Monel 400 Stud

Monel 400 Stud

Nickel-copper alloy stud with outstanding resistance to seawater and acidic environments.

ASTM B164 / ASME SB-164
Hastelloy C276 Washer

Hastelloy C276 Washer

Exceptional corrosion resistance in aggressive chemical environments.

ASTM B574 / ASME SB-574
904L (N08904) Bolt

904L (N08904) Bolt

Super-austenitic stainless steel bolt with high resistance to pitting and crevice corrosion.

ASTM A193 / ASME SA-193
F51 (S31803) Stud

F51 (S31803) Stud

Duplex stainless steel stud with balanced austenitic-ferritic structure for high strength and corrosion resistance.

ASTM A182 / ASME SA-182
Inconel X-750 Nut

Inconel X-750 Nut

Age-hardening nickel-chromium alloy nut for high-temperature service.

ASTM B563 / ASME SB-563
S32750 (F53) Bolt

S32750 (F53) Bolt

Super duplex stainless steel bolt with superior mechanical and corrosion resistance properties.

ASTM A182 / ASME SA-182

Advanced Alloy Materials

We specialize in exotic and high-performance alloys for extreme industrial environments.

Inconel & Nickel Alloys

  • Inconel 718, 625, 600, X-750
  • Incoloy 925, 800H, 825
  • Monel 400, K500
  • Nimonic 80A
  • 904L (N08904)

Duplex & Stainless Steels

  • Duplex F51 (S31803)
  • Super Duplex F53 (S32750)
  • A-286 (Gr660)
  • Precipitation Hardening Steels
  • Austenitic Stainless Steels

Superalloys & Exotics

  • Hastelloy C276, B2, B3
  • Special Welding Wires
  • Anti-Corrosion Alloys
  • Precision Alloys
  • Custom Alloy Solutions
18+
Years in Industry
50+
Global Clients
15K
m² Factory
ASME/ASTM
Standards Compliant

Frequently Asked Questions

What materials do you specialize in?

We specialize in Inconel, Monel, Hastelloy, Duplex Stainless Steel, 904L, A-286, Nimonic 80A, and other nickel-based superalloys.

Do you comply with international standards?

Yes, our products are manufactured to ASME, ASTM, and DIN standards for bolts, nuts, studs, and washers.

Can you provide custom sizes or specifications?

Yes, we offer custom manufacturing based on client drawings and specifications.

Where is your factory located?

Our production facility is in Shiyan Town, Dongtai City, Jiangsu, China. Our office is in Shenzhen, Guangdong.

Do you offer bulk discounts?

Yes, as a factory-direct supplier, we offer competitive pricing for bulk and OEM orders.

Get in Touch

Contact us for quotes, technical support, or custom manufacturing inquiries.

Phone: +86-755-23202160

Email: inquiry.bolts@shapedparts.com

Office Address: The 6th Industrial Park, Gonghe, Shajing, Baoan, Shenzhen, Guangdong, China.

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