If you’re in steel construction, towers, or large infrastructure, chances are you’ve worked with tension control bolts (TC bolts). But when it comes to sourcing them from China—who can you really rely on?
I’m Monica Song from Shanghai Hengrui Industry Co., Ltd. With over 15 years in the fastener industry, I’ve helped B2B clients from Canada to Europe vet and partner with the right bolt manufacturers.
Here’s my handpicked list of Top 10 TC bolt manufacturers in China, with everything you need to compare and choose confidently.
1. Shanghai Hengrui Industry Co., Ltd
Company Overview: Hengrui is an expert in structural and customized fasteners. We produce TC bolts, nuts, washers, and all kinds of non-standard items. Even though we officially started in 2021, our team has 15+ years of real-world experience in fastener manufacturing and project export.
Established: 2021
Location: Shanghai
Main Products: TC bolts, structural bolts, Screw, nuts, washers, and custom fasteners, machined parts, stamping parts
We follow ISO 9001 standards and can manufacture ASTM A325/A490 TC bolts, complete with matched nuts and washers. Custom head markings, coatings, and packaging? No problem.
2. Fastenwell (Ningbo) Hardware Co., Ltd.
Company Overview: Fastenwell is one of the most established TC bolt suppliers in Ningbo. They manufacture ASTM A325 and A490 bolts, plus heavy hex nuts (A563) and washers.
Established: 2005
Location: Ningbo, Zhejiang
Main Products: TC bolts, heavy hex bolts, nuts, washers
Their TC bolts are full or half-threaded, spline-driven, and designed for steel-to-steel connections. The sheared spline ensures proper tensioning, and they export globally.
3. Aozhan Hardware Fastener Co., Ltd.
Company Overview: With a history tracing back to 1987, Aozhan is known for precision and reliability. They focus heavily on tension control bolts for construction and steel frameworks.
Established: 2005
Location: Hangzhou, Zhejiang
Main Products: Precision bolts, TC bolts, structural fasteners
Aozhan’s bolts meet modern load-bearing and torque specifications, serving OEM and end-user clients alike.
4. Hangzhou Jiaxiang Gaoqiang Bolts Co., Ltd.
Company Overview: Jiaxiang Gaoqiang is a high-capacity factory producing over 1.5 billion bolts annually. They specialize in torsion and shear TC bolts.
Established: 2007
Location: Hangzhou, Zhejiang
Main Products: TC bolts, hex nuts, washers
Their products follow GB/T3632-2008 and are widely used in rail, bridges, and major engineering projects.
5. Beijing Jinzhaobo Fastener Co., Ltd.
Company Overview: Jinzhaobo is a key player in structural fasteners. They provide complete TC bolt assemblies compliant with EN14399 and ASTM.
Location: Beijing
Main Products: TC bolts, shear studs, anchor bolts
Their JSS II09 bolting assemblies include heavy-duty TC bolts used in skyscrapers and high-tension bridges.
6. Hongji Fasteners Co., Ltd.
Company Overview: Hongji delivers competitive TC bolts for international buyers. Their bolts come with various coatings and meet industry-standard mechanical requirements.
Location: China
Main Products: TC bolts, fluoropolymer bolts, screws
A favorite among buyers from the US, EU, and Australia due to their dependable production and fast delivery.
7. Shanghai Prime Machinery Co., Ltd. (PMC)
Company Overview: PMC is a state-level manufacturer with a full catalog of high-performance fasteners.
Established: 1960
Location: Shanghai
Main Products: TC bolts, heavy hex bolts, nuts
Their strength is global reach, complete in-house testing, and high-volume availability.
8. Ningbo OuKaiLuo Hardware Co., Ltd.
Company Overview: OuKaiLuo runs advanced production lines and exports to over 30 countries. Their TC bolts undergo heat treatment and surface coatings.
Established: 1999
Location: Ningbo, Zhejiang
Main Products: TC bolts, hex bolts, nuts, washers
Strong QC, and they’re very good at OEM packaging & private labeling.
9. Dongguan Roche Industrial Co., Ltd.
Company Overview: Roche manufactures millions of fasteners monthly, including TC bolts. With ISO 9001 in place, they maintain a 99.8% pass rate.
Established: 2006
Location: Dongguan, Guangdong
Main Products: TC bolts, nuts, bolts
Their flexibility and QC make them a great choice for custom specs.
10. Hangzhou Tengqi Fasteners Co., Ltd.
Company Overview: Tengqi offers structural-grade TC bolts, widely used in construction and energy.
Established: 2003
Location: Hangzhou, Zhejiang
Main Products: TC bolts, structural bolts, nuts
They’re known for technical engineering support and solid after-sales services.
Quick Comparison Table：Tension Control Bolt (TC Bolt) Suppliers in China
| Company Name | Location | Founded | Main Products |
|---|---|---|---|
| Shanghai Hengrui Industry Co., Ltd. | Shanghai | 2021 | TC bolts, bolts, Screw, custom fasteners |
| Fastenwell (Ningbo) Hardware Co., Ltd. | Ningbo, Zhejiang | 2005 | TC bolts A325/A490, hex nuts, washers |
| Aozhan Hardware Fastener Co., Ltd. | Hangzhou, Zhejiang | 2005 | TC bolts, structural bolts |
| Hangzhou Jiaxiang Gaoqiang Bolts Co. | Hangzhou, Zhejiang | 2007 | High-strength TC bolts |
| Beijing Jinzhaobo Fastener Co., Ltd. | Beijing | N/A | TC bolts, shear studs, anchor bolts |
| Hongji Fasteners Co., Ltd. | China | N/A | TC bolts, fluoropolymer bolts |
| Shanghai Prime Machinery Co., Ltd. | Shanghai | 1960 | TC bolts, structural fasteners |
| Ningbo OuKaiLuo Hardware Co., Ltd. | Ningbo, Zhejiang | 1999 | TC bolts, nuts, washers |
| Dongguan Roche Industrial Co., Ltd. | Dongguan, Guangdong | 2006 | TC bolts, hex bolts |
| Hangzhou Tengqi Fasteners Co., Ltd. | Hangzhou, Zhejiang | 2003 | TC bolts, structural bolts |
| HISENER Industrial Co., Ltd. | Haining, Zhejiang | 2004 | TC bolts, rigging fasteners |
Frequently Asked Questions (FAQ)
Q1: What are TC bolts used for?
A: Tension control bolts are used in structural steel joints. The spline shears off when proper torque is reached, ensuring safe and uniform tension.
Q2: Do Chinese suppliers meet ASTM and EN standards?
A: Yes. Most listed here comply with ASTM A325, A490, EN14399, and offer test reports.
Q3: Can I request special coatings or markings?
A: Absolutely. Options include hot-dip galvanizing, zinc plating, fluoropolymer, and custom head/logo markings.
Q4: What’s the MOQ and lead time?
A: Typically MOQ is 5000 pcs, lead time ranges from 30–45 days, depending on spec and finish.
Conclusion
Whether you’re sourcing for a bridge project, power plant, or steel tower, TC bolts are mission-critical components. These 10 suppliers offer quality, experience, and export readiness.
Need help choosing the right one? Reach out to me—Monica Song from Shanghai Hengrui—your fastener partner in China.
Contact Hengrui Fastener for Custom TC bolts
For specialized applications that require custom solutions, Hengrui Fastener offers high-quality, customizable TC bolts and fasteners. Whether you need a specific size, material, or finish, Hengrui can provide tailored fasteners to meet your exact requirements. Contact Hengrui Fastener to learn more about our products and services.
