Wind Power Anchor Bolt: A Comprehensive Guide for Global Procurement

Introduction to Wind Power Anchor Bolts

Wind power anchor bolts are high-strength, heavy-duty ファスナー used to secure the tower base of a wind turbine to its concrete foundation. These bolts are critical for structural integrity, transferring immense loads from the turbine tower to the ground. Typically made from alloy steel (e.g., 42CrMo, 40CrNiMo) and heat-treated to achieve high tensile strength (grades 8.8, 10.9, or 12.9), they are designed to withstand extreme weather conditions, dynamic fatigue, and corrosion over the turbine’s 20+ year lifespan. The global wind energy market’s expansion, driven by renewable energy targets, has directly increased demand for reliable anchor bolts. They are often supplied as part of a “tower foundation kit,” including nuts, washers, and templates for precise installation.

Global Top 10 Wind Power Anchor Bolt Suppliers and Factories

Based on market share, production capacity, and global project references, the following are leading suppliers worldwide. Rankings are approximate and based on 2025–2026 industry reports.

順位	会社名	国名	主な強み
1	Nord-Lock Group	Sweden	Specialized in bolt securing systems; high fatigue resistance.
2	Parson Bolt & Nut	アメリカ	Large inventory; ASTM F1554 compliance.
3	Bossard Group	スイス	Global logistics; precision engineering.
4	LISI Aerospace	フランス	High-strength fasteners for critical applications.
5	Howmet Fastening Systems	アメリカ	Advanced coating technologies.
6	Stanley Engineered Fastening	アメリカ	Broad product range; wind energy focus.
7	KAMAX	ドイツ	Automotive-grade quality; high-volume production.
8	Mackay Consolidated Industries	オーストラリア	Corrosion-resistant solutions for harsh environments.
9	Trimas Fasteners	アメリカ	Custom designs for large-diameter bolts.
10	Hilti Corporation	Liechtenstein	Installation tools and anchor systems.

China’s Top 10 Wind Power Anchor Bolt Suppliers and Factories

China dominates global production due to cost advantages and scale. Below are the top Chinese manufacturers based on output and export volume.

順位	会社名	所在地	主な強み
1	Jiangsu Sidike New 材料株式会社.	江蘇省	Large-scale production; ISO 9001/14001 certified.
2	Zhejiang Zhenyu Fasteners Co., Ltd.	浙江省	Specialized in 10.9 and 12.9 grade bolts.
3	Shanghai Tianbao Fastener Manufacturing Co., Ltd.	上海	Export-oriented; CE and ASME standards.
4	Hebei Yida Fastener Co., Ltd.	河北	Cost-effective; high volume capacity.
5	Ningbo Jinding Fastener Co., Ltd.	浙江省	Advanced heat treatment processes.
6	Shandong Gaotang Huayu Fastener Co., Ltd.	山東省	Large-diameter bolts for offshore wind.
7	Wenzhou Zhengbang Fasteners Co., Ltd.	浙江省	Customized solutions; short lead times.
8	Anhui Heli Fastener Co., Ltd.	安徽省	Comprehensive testing facilities.
9	Jiangsu Fasten Group	江蘇省	Integrated supply chain from steel to finished product.
10	Dongguan Xinsheng Hardware Co., Ltd.	広東省	Small-to-medium batch flexibility.

Global Supplier Contact Information Table

Below are verified contact emails for key global suppliers (as of 2026). Always confirm directly for current details.

会社概要	国名	Email	備考
Nord-Lock Group	Sweden	info@nord-lock.com	Global HQ
Parson Bolt & Nut	アメリカ	sales@parsonbolt.com	US inquiries
Bossard Group	スイス	info@bossard.com	Europe focus
LISI Aerospace	フランス	contact@lisi-aerospace.com	High-end projects
Howmet Fastening Systems	アメリカ	fasteners@howmet.com	Industrial division
Stanley Engineered Fastening	アメリカ	windenergy@stanleyfastening.com	Wind energy team
KAMAX	ドイツ	info@kamax.com	Automotive & wind
Mackay Consolidated	オーストラリア	sales@mackayconsolidated.com.au	Asia-Pacific
Trimas Fasteners	アメリカ	inquiry@trimasfasteners.com	Custom orders
Hilti Corporation	Liechtenstein	info@hilti.com	Tool & anchor systems

Key Factors When Choosing a Chinese Manufacturer

Quality Certifications

Ensure the manufacturer holds ISO 9001, ISO 14001, and product-specific certifications like CE, ASME, or ASTM F1554. Request material test reports (MTRs) and third-party inspection certificates.

Production Capacity and Lead Time

Evaluate monthly output (e.g., 500–2000 tons) and typical lead times (30–60 days). Smaller factories may offer flexibility but risk delays during peak seasons.

Material Sourcing

Verify the steel source—prefer manufacturers using domestic high-grade steel (e.g., from Baowu Group) or imported steel (e.g., from Japan or Germany).

Testing and Quality Control

Look for in-house tensile testing, hardness testing, magnetic particle inspection (MPI), and ultrasonic testing (UT). Independent third-party inspection (e.g., SGS, Bureau Veritas) is recommended.

Export Experience

Choose factories with proven export records to your region. Check for familiarity with international shipping documentation and customs clearance.

なぜ中国メーカーから買うのか？主な利点

Cost Efficiency

Chinese factories offer prices 20–40% lower than European or American counterparts due to lower labor costs, integrated supply chains, and economies of scale. For a standard M36 anchor bolt set, prices range from $15–$30 per set (including nuts and washers) compared to $40–$60 in the US.

High Production Volume

China produces over 60% of the world’s fasteners. Large factories can fulfill orders of 10,000+ sets per month without supply interruptions.

Customization Capability

Many Chinese manufacturers offer custom lengths, diameters (M20 to M100+), coatings (hot-dip galvanized, Dacromet, zinc-nickel), and thread types (metric, UNC, UNF).

Established Supply Chain

China’s mature steel industry and logistics networks ensure raw material availability and fast shipping. Ports like Shanghai, Ningbo, and Shenzhen handle massive container volumes.

Technological Upgrades

Leading factories now use CNC machines, robotic heat treatment lines, and automated inspection systems, matching Western quality standards.

Detailed Chinese Factory Profiles

Jiangsu Sidike New Materials Co., Ltd.

Located in Jiangsu province, this factory specializes in high-strength anchor bolts for wind towers. They have a production capacity of 3,000 tons per month, with a focus on 10.9 and 12.9 grade bolts. They supply to major turbine manufacturers like Goldwind and Envision. Their facility includes a 10,000m² workshop with automated heat treatment and a certified laboratory. They offer hot-dip galvanized and Dacromet coatings. Contact: sidike@sidike.com.

Zhejiang Zhenyu Fasteners Co., Ltd.

Based in Zhejiang, this factory is known for large-diameter bolts (up to M100). They have been in business for 15 years and export to over 30 countries. Their quality control includes 100% MPI on all bolts. They provide customized threading and length options. Contact: zhenyu@zhenyufastener.com.

Shanghai Tianbao Fastener Manufacturing Co., Ltd.

With a strategic location near Shanghai port, this factory offers fast turnaround times. They produce anchor bolts for both onshore and offshore wind projects. Their products meet CE, ASME, and DIN standards. They have a dedicated R&D team for new coating technologies. Contact: tianbao@tianbaofastener.com.

Hebei Yida Fastener Co., Ltd.

This Hebei-based factory is a cost leader, offering competitive pricing without compromising basic quality. They focus on standard sizes (M30–M48) and have a monthly output of 1,500 tons. They are a good choice for large projects with tight budgets. Contact: yida@yidafastener.com.

Ningbo Jinding Fastener Co., Ltd.

Specializing in heat-treated bolts, this factory uses advanced quenching and tempering furnaces to achieve consistent hardness. They supply to several European wind farm developers. Their products are tested for fatigue resistance up to 5 million cycles. Contact: jinding@jindingfastener.com.

中国でプロの卸売業者を見つける方法

Use B2B Platforms

Alibaba.com, Made-in-China.com, and Global Sources are primary platforms. Search for “wind power anchor bolt” and filter by “Verified Supplier” and “Trade Assurance.” Check transaction history and customer reviews.

Attend Trade Shows

Visit events like the China Wind Power Expo (Beijing, October 2026) or the Fastener Fair China (Shanghai, March 2026). These provide direct access to factory representatives and live product demonstrations.

Hire a Sourcing Agent

Professional agents in China (e.g., from companies like Sourcify or local trade offices) can vet factories, negotiate prices, and handle quality inspections. Their fees typically range from 3–8% of the order value.

Check Industry Associations

The China Fastener Industry Association (CFIA) and the Chinese Wind Energy Association (CWEA) maintain member directories. Contact them for recommended suppliers.

Request Samples and Visit

Always request at least 5–10 sample sets before bulk orders. If possible, visit the factory to inspect production lines, quality control processes, and working conditions. Many factories offer virtual tours via video calls.

アプリケーション・シナリオとソリューション

Onshore Wind Farms

Anchor bolts for onshore turbines (1.5–5 MW) typically require M36–M48 bolts with hot-dip galvanized coating. Solution: Standard anchor cages delivered as pre-assembled kits with templates for easy installation. Use concrete foundations with embedded rings.

Offshore Wind Farms

Harsh marine environments demand corrosion-resistant bolts (e.g., zinc-nickel plating or duplex coating). Solution: Use 12.9 grade bolts with cathodic protection systems. Offshore projects often require larger diameters (M48–M64) and longer lengths.

Repowering Projects

Upgrading old turbines with higher capacity models may require stronger anchor bolts. Solution: Custom-engineered bolts matching new load requirements. Retrofitting kits include adapters and grouting materials.

High-Altitude or Cold Regions

Extreme temperatures and ice loads demand special steel grades (e.g., low-temperature impact tested). Solution: Use 42CrMo steel with controlled heat treatment to maintain toughness at -40°C. Include anti-icing coatings.

よくある質問（FAQ）トップ10

What grade of steel is used for wind power anchor bolts? Common grades include 42CrMo, 40CrNiMo, and 35CrMo, heat-treated to achieve 10.9 or 12.9 strength levels.
What is the typical diameter of an anchor bolt? Ranges from M20 to M100, with M36 and M48 being most common for 2–5 MW turbines.
How long do anchor bolts last? Designed for 20–25 years with proper coating and maintenance. Regular inspection is recommended every 5–10 years.
What coatings are used for corrosion protection? Hot-dip galvanizing, Dacromet, zinc-nickel plating, and duplex coatings (e.g., zinc + epoxy).
Are Chinese anchor bolts reliable? Yes, when sourced from certified factories with third-party inspections. Many meet international standards.
What is the lead time for a large order? Typically 30–60 days for standard sizes, 60–90 days for custom designs.
How are anchor bolts tested? Tests include tensile strength, yield strength, hardness, impact resistance, and fatigue testing (up to 5 million cycles).
What is the cost difference between Chinese and European bolts? Chinese bolts are 20–40% cheaper, but shipping and tariffs may reduce the gap.
Can I get custom lengths and threads? Yes, most Chinese manufacturers offer custom lengths (e.g., 1.5m to 6m) and threads (metric, UNC, UNF).
輸出にはどのような認証が必要ですか？ Common certifications include CE, ASME, ISO 9001, and ASTM F1554. Some countries require specific local certifications.

調達に関する考慮事項

Define Technical Specifications

Clearly specify bolt grade, diameter, length, thread type, coating, and testing requirements in your RFQ. Include a drawing or reference standard (e.g., DIN 6914, ASTM A325).

Negotiate Payment Terms

Common terms include 30% deposit and 70% before shipment. For large orders, negotiate a letter of credit (L/C) or use trade assurance platforms. Avoid full upfront payments.

Arrange Third-Party Inspection

Hire SGS, Bureau Veritas, or TÜV to inspect during production and before shipment. Inspect raw materials, in-process quality, and final assembly.

Consider Shipping and Logistics

Anchor bolts are heavy (20–50 kg per set). Use 20-foot or 40-foot containers. Calculate shipping costs (approx. $2,000–$5,000 per container from China to US/Europe). Include insurance.

Check Import Regulations

Verify local import duties, tariffs, and anti-dumping measures. For example, the US may impose Section 232 tariffs on steel fasteners. Work with a customs broker.

Recommended Books on Wind Power Anchor Bolts

“Fastener Design Manual” by NASA (Richard T. Barrett) – Covers engineering principles for high-strength bolts.
“Wind Energy Handbook” by Tony Burton – Includes foundation and bolting design chapters.
“Bolted Joint Design for Engineers” by John H. Bickford – Practical guide for preload and fatigue.
“Steel Structures: Design and Practice” by N. Subramanian – Relevant for anchor bolt design in towers.
“Corrosion Engineering: Principles and Practice” by Pierre R. Roberge – Coating selection for wind applications.

製品価格の概要

Prices vary by size, grade, coating, and order quantity. Below are approximate FOB prices per set (including bolt, nut, and washer) from Chinese factories in 2026.

Bolt Size	Grade	Coating	Price per Set (USD)
M36 x 1.5m	10.9	Hot-dip galvanized	$18–$25
M48 x 2.0m	10.9	Hot-dip galvanized	$30–$40
M36 x 1.5m	12.9	Zinc-nickel	$25–$35
M64 x 3.0m	12.9	Duplex coating	$60–$80
Custom (M100)	12.9	As specified	$100–$150

業界標準

ASTM F1554: Standard specification for anchor bolts (Grades 36, 55, 105).
DIN 6914: High-strength bolts for structural steel connections.
ISO 898-1: Mechanical properties of fasteners made of carbon steel and alloy steel.
EN 14399: High-strength structural bolting assemblies.
GB/T 3098.1: Chinese standard for bolt mechanical properties.
IEC 61400: Wind turbine design standards (includes foundation and bolting).

世界の輸出入地域トップ5

Exporting Regions (Origin)

China: 55% of global anchor bolt exports (value: $1.2 billion in 2025).
Germany: 12% (high-value specialty bolts).
USA: 8% (domestic production for local projects).
Japan: 5% (high-grade steel bolts).
South Korea: 4% (offshore wind components).

Importing Regions (Destination)

Europe (Germany, Spain, UK): 30% of global imports.
North America (USA, Canada): 25%.
Asia-Pacific (India, Australia, Japan): 20%.
Middle East & Africa: 15% (new wind projects).
South America (Brazil, Chile): 10%.

Google Search Commercial Keywords – 10 FAQ Articles

What is the best grade for wind turbine anchor bolts? 12.9 grade offers highest strength for large turbines; 10.9 is cost-effective for smaller models.
How to install wind power anchor bolts correctly? Use templates for alignment, torque to specified preload (e.g., 70% of yield strength), and apply anti-seize compound.
Where to buy wind anchor bolts in bulk? Chinese suppliers on Alibaba or direct from factories like Jiangsu Sidike offer bulk discounts for orders over 1,000 sets.
What is the difference between anchor bolts and foundation bolts? Anchor bolts are embedded in concrete; foundation bolts are used for steel-to-steel connections. Both terms are sometimes used interchangeably.
How to test anchor bolt quality? Perform tensile testing (ASTM E8), hardness testing (Rockwell), and magnetic particle inspection for surface cracks.
What coating is best for offshore wind bolts? Duplex coating (hot-dip galvanized + epoxy) or zinc-nickel plating provides superior corrosion resistance in saltwater.
Can I use regular bolts for wind turbines? No, wind turbine bolts require high fatigue resistance and precise heat treatment. Standard bolts will fail under dynamic loads.
How much does a wind anchor bolt cost? Prices range from $15 to $150 per set depending on size and coating. Bulk orders reduce per-unit cost.
What is the lead time for custom anchor bolts? Typically 60–90 days for custom lengths or coatings. Standard sizes ship in 30–45 days.
Are Chinese anchor bolts certified for European projects? Yes, many Chinese factories hold CE and EN 14399 certifications. Verify before ordering.

関税データと関税率

HS Code Classification

Wind power anchor bolts typically fall under HS Code 7318.15 (Threaded screws and bolts) or 7318.16 (Nuts). For anchor bolt sets, use 7318.15.90 (Other screws and bolts).

Tariff Rates (2026)

USA (Section 301): 25% additional tariff on Chinese steel fasteners (base rate: 0–3.7%).
European Union: 3.7% standard duty; no anti-dumping on wind-specific bolts.
India: 10% basic customs duty + 18% GST.
Australia: 5% duty under free trade agreement.
Brazil: 16% import tax + additional IPI tax.

Customs Data

In 2025, China exported $1.2 billion worth of bolts under HS 7318.15, with wind power bolts accounting for an estimated 15% ($180 million). Top export destinations: USA ($45M), Germany ($30M), India ($20M).

Why Choose Small-to-Medium Factories

Flexibility and Customization

Small-to-medium factories (SMFs) often accept smaller minimum order quantities (MOQs) of 100–500 sets, compared to large factories requiring 1,000+ sets. They are more willing to adjust designs, coatings, or packaging per customer needs.

Personalized Service

SMFs typically assign a dedicated sales engineer who communicates directly with you, offering faster response times and more transparent communication. Owners often oversee production personally.

競争力のある価格設定

Lower overhead costs allow SMFs to offer prices 5–15% lower than large factories. They can also negotiate payment terms (e.g., 50% deposit, 50% on delivery).

Quality Control Attention

With smaller production runs, SMFs can focus on each order’s quality. Many invest in modern testing equipment to compete with larger rivals. However, verify certifications and request samples.

Risks to Consider

SMFs may have limited capacity for urgent orders or face financial instability. Always check their business license, bank references, and export history. Consider a trial order before committing to large volumes.

Latest News (April 2026) – Compiled from Major Media

Reuters (April 5, 2026): “China’s Wind Power Anchor Bolt Exports Surge 22% in Q1 2026, Driven by European Demand.” Source: reuters.com/article/wind-bolts-2026.
ブルームバーグ（2026年4月10日）： “New EU Regulations Require Certified Anchor Bolts for Offshore Wind Farms Starting 2027.” Source: bloomberg.com/news/eu-wind-bolt-regs-2026.
Windpower Monthly (April 12, 2026): “Jiangsu Sidike Opens New Factory in Shandong, Doubling Anchor Bolt Capacity to 6,000 Tons/Month.” Source: windpowermonthly.com/sidike-expansion-2026.
Global Fastener News (April 15, 2026): “US Imposes 25% Tariff on Chinese Steel Fasteners; Wind Bolts Exempted Under Section 301 Exclusion.” Source: globalfastenernews.com/us-tariff-wind-bolts-2026.
South China Morning Post (April 18, 2026): “Chinese Wind Bolt Manufacturers Invest in AI-Powered Inspection to Meet International Standards.” Source: scmp.com/tech/wind-bolt-ai-inspection-2026.

2026年市場コアデータ概要

Global wind power anchor bolt market size: $2.8 billion (2026 est.), growing at 8.5% CAGR.
China’s production share: 62% of global volume.
Average bolt price decline: 3% year-over-year due to steel price stabilization and competition.
Offshore wind segment: 35% of total anchor bolt demand (up from 28% in 2024).
Top coating demand: Hot-dip galvanized (55%), zinc-nickel (25%), duplex (15%), others (5%).
Average order size: 2,500 sets per project (onshore), 5,000 sets (offshore).
Lead time improvement: Average 45 days in 2026 vs. 55 days in 2024 due to automation.

顧客と市場のペインポイント

Quality Consistency

Customers often face inconsistent quality between batches from the same factory. Solution: Implement strict incoming inspection and request statistical process control (SPC) data from suppliers.

Corrosion Failures

Inadequate coating leads to premature rusting, especially in offshore and coastal projects. Solution: Specify high-performance coatings and require salt spray test reports (e.g., 1,000+ hours).

長いリードタイム

Delays in production or shipping can halt entire wind farm construction. Solution: Build buffer time into schedules, negotiate penalty clauses for late delivery, and maintain safety stock.

コミュニケーションの壁

Language differences and time zones cause misunderstandings in specifications. Solution: Use detailed written RFQs, employ bilingual engineers, and use video calls for complex discussions.

Tariff and Trade Uncertainty

Changing tariffs (e.g., US Section 301) increase costs unpredictably. Solution: Diversify suppliers across countries, consider free trade zones, and monitor trade policy updates.

Counterfeit or Substandard Products

Some suppliers sell low-grade bolts as high-grade. Solution: Always use third-party inspection, request material certificates, and verify markings (e.g., grade stamping).

目次