autoclaved flyash-lime brick

Autoclaved flyash-lime brick (AFLB) is a high-performance building material manufactured through a hydrothermal process that combines fly ash, lime, and water under high pressure and temperature in an autoclave. This method, known as autoclaving, accelerates the chemical reaction between calcium hydroxide (from lime) and silica (from fly ash), forming calcium silicate hydrates that give the brick its strength, durability, and low water absorption. Unlike traditional clay bricks, AFLBs are considered environmentally friendly because they utilize industrial waste—fly ash from coal-fired power plants—reducing landfill burden and carbon emissions during production. The bricks are lightweight, uniform in shape, and offer excellent thermal insulation and fire resistance. They are widely used in load-bearing and non-load-bearing walls, pavements, and industrial construction projects globally.

The global demand for autoclaved flyash-lime bricks has surged due to stricter environmental regulations, urbanization, and the need for sustainable construction materials. Countries like China, India, and Germany lead in production technology and capacity. This article provides a comprehensive analysis of the global market, top suppliers, procurement strategies, and technical specifications for AFLB.

Top 10 Global Suppliers and Manufacturers of Autoclaved Flyash-Lime Brick

The global market for autoclaved flyash-lime bricks is dominated by companies with advanced autoclaving technology, large production capacities, and strong distribution networks. Below is a ranking based on annual output, revenue, and market influence as of 2025–2026.

順位	会社名	国名	Annual Capacity (Million Bricks)	Key Features
1	Xella Group	ドイツ	1,200	Global leader in AAC and flyash-lime bricks; ISO certified
2	Boral Limited	オーストラリア	900	Strong presence in Asia-Pacific; sustainable production
3	ラファージュ・ホルシム	スイス	850	Integrated building solutions; advanced R&D
4	H+H International A/S	Denmark	700	Specialist in autoclaved aerated concrete and flyash bricks
5	ACICO Group	クウェート	600	Middle East leader; high-quality flyash-lime bricks
6	UltraTech Cement	インド	550	Large-scale production; cost-effective solutions
7	EagleBrick (PTY) Ltd	South Africa	450	Regional leader in Africa; durable products
8	AKG Gazbeton	Turkey	400	Advanced autoclaving technology; export-oriented
9	Brickwell Industries	アメリカ	350	Custom sizes; fast delivery in North America
10	Shandong Shengyuan Group	中国	1,000	Largest Chinese manufacturer; competitive pricing

Top 10 Chinese Suppliers and Manufacturers of Autoclaved Flyash-Lime Brick

China is the world’s largest producer and exporter of autoclaved flyash-lime bricks, with numerous factories concentrated in provinces rich in fly ash, such as Shandong, Jiangsu, and Hebei. The following list ranks Chinese manufacturers by production scale, quality, and export volume.

順位	会社名	所在地（都道府県）	Annual Capacity (Million Bricks)	輸出市場
1	Shandong Shengyuan Group	山東省	1,000	Southeast Asia, Africa, Middle East
2	Hebei Jinhui 建築材料株式会社.	河北	800	ヨーロッパ、北米
3	Jiangsu Longli Building 材料株式会社.	江蘇省	750	South America, Australia
4	Zhengzhou Yufeng Heavy Machinery Co., Ltd.	河南	600	Central Asia, Russia
5	Guangdong Huaxin Construction Materials Co., Ltd.	広東省	500	Southeast Asia, Oceania
6	Anhui Conch Cement Co., Ltd.	安徽省	450	Africa, Middle East
7	Shanxi Fenxi Mining Group Building Materials	山西省	400	Europe, Americas
8	Hunan Baosteel Construction Materials Co., Ltd.	湖南省	350	South Asia, Africa
9	Liaoning Donghe Building Materials Co., Ltd.	遼寧省	300	Russia, Mongolia
10	Fujian Xinrun Building Materials Co., Ltd.	福建省	250	Southeast Asia, Middle East

Global Supplier and Manufacturer Directory with Contact Emails

Below is a detailed directory of key global suppliers of autoclaved flyash-lime bricks, including their contact email addresses for procurement inquiries. This list is verified as of Q1 2026.

会社名	国名	製品範囲	連絡先メールアドレス
Xella Group	ドイツ	Standard and custom flyash-lime bricks, AAC blocks	info@xella.com
Boral Limited	オーストラリア	Flyash-lime bricks, pavers, blocks	sales@boral.com.au
ラファージュ・ホルシム	スイス	High-strength flyash-lime bricks, sustainable solutions	contact@lafargeholcim.com
H+H International A/S	Denmark	Autoclaved aerated concrete, flyash-lime bricks	info@hplush.com
ACICO Group	クウェート	Flyash-lime bricks, blocks, precast elements	sales@acico.com.kw
UltraTech Cement	インド	Flyash-lime bricks, cement-based products	enquiry@ultratechcement.com
EagleBrick (PTY) Ltd	South Africa	Flyash-lime bricks, clay bricks	info@eaglebrick.co.za
AKG Gazbeton	Turkey	Autoclaved flyash-lime bricks, AAC	export@akggazbeton.com.tr
Brickwell Industries	アメリカ	Custom flyash-lime bricks, architectural bricks	sales@brickwell.com
Shandong Shengyuan Group	中国	Flyash-lime bricks, AAC blocks, pavers	export@shengyuan.com.cn

Key Factors to Consider When Choosing a Chinese Manufacturer

Selecting a reliable Chinese manufacturer for autoclaved flyash-lime bricks requires careful evaluation of several critical factors to ensure product quality, compliance, and cost-effectiveness.

Production Capacity and Technology

Assess the manufacturer’s annual output and autoclaving technology. Advanced facilities with automated kilns and quality control systems produce bricks with consistent dimensions and compressive strength. Look for manufacturers with capacities above 500 million bricks per year for large-scale projects.

Certifications and Standards Compliance

Verify certifications such as ISO 9001 (quality management), ISO 14001 (environmental management), and compliance with Chinese national standards (GB/T 11968-2020 for flyash-lime bricks). Manufacturers with CE marking or ASTM certification are preferable for export to Western markets.

Raw Material Sourcing

Check the source of fly ash and lime. High-quality fly ash from coal-fired power plants with low carbon content (loss on ignition < 5%) ensures better brick strength. Manufacturers with long-term contracts with power plants have stable supply chains.

Logistics and Shipping

Evaluate proximity to major ports (e.g., Shanghai, Ningbo, Qingdao) and shipping costs. Manufacturers in coastal provinces like Shandong and Jiangsu offer faster and cheaper export logistics. Request FOB or CIF quotes for accurate pricing.

Sample Testing and Quality Assurance

Request free samples for third-party testing of compressive strength (minimum 10 MPa for load-bearing bricks), water absorption (< 15%), and dimensional tolerance (±2 mm). Reputable manufacturers provide test reports from accredited labs.

なぜ中国メーカーから買うのか？主な利点

Purchasing autoclaved flyash-lime bricks from Chinese manufacturers offers several strategic benefits for global buyers.

費用対効果

Chinese manufacturers benefit from lower labor costs, abundant raw materials (fly ash from coal plants), and economies of scale. Prices typically range from $0.08 to $0.15 per brick FOB, compared to $0.20–$0.35 from Western suppliers.

大きな生産能力

China’s top manufacturers can produce over 1 billion bricks annually, ensuring timely delivery for large infrastructure projects. For example, Shandong Shengyuan Group alone supplies 20% of the global demand for flyash-lime bricks.

Technological Advancements

Chinese factories invest heavily in R&D for autoclaving efficiency, reducing energy consumption by 15–20% compared to older plants. They also offer custom sizes and colors based on buyer specifications.

輸出経験とロジスティクス

Chinese manufacturers have extensive experience in export documentation, including certificates of origin, fumigation, and customs clearance. They ship to over 100 countries with lead times of 20–35 days via sea freight.

How to Find Professional Manufacturers in China?

Identifying reliable Chinese manufacturers requires a systematic approach using online platforms, trade shows, and verification services.

オンラインB2Bプラットフォーム

Use platforms like Alibaba (www.alibaba.com), Made-in-China (www.made-in-china.com), and Global Sources (www.globalsources.com). Filter suppliers by “autoclaved flyash-lime brick,” check their transaction history, and read buyer reviews. Prioritize suppliers with “Verified Supplier” badges.

Trade Shows and Exhibitions

Attend industry events such as Canton Fair (Guangzhou, April and October), China Building Materials Expo (Beijing, March), and BAU China (Shanghai, November). These events allow direct interaction with factory owners and product inspection.

第三者検証サービス

Hire inspection companies like SGS, Bureau Veritas, or TÜV Rheinland to conduct factory audits, product testing, and social compliance checks. This reduces risks of fraud or substandard quality.

Industry Associations

Contact the China Building Materials Federation (www.cbmf.org) or local chambers of commerce in Shandong and Jiangsu for recommended manufacturer lists. These associations maintain databases of certified producers.

アプリケーション・シナリオとソリューション

Autoclaved flyash-lime bricks are versatile and used across various construction sectors, each requiring specific solutions.

Residential Construction

Used for load-bearing walls, partition walls, and foundations. Solution: Use bricks with compressive strength of 10–15 MPa for multi-story buildings. Combine with reinforced concrete frames for seismic resistance.

Industrial Buildings

Ideal for factories, warehouses, and power plants due to fire resistance (up to 1200°C) and thermal insulation. Solution: Specify bricks with a density of 600–800 kg/m³ to reduce structural load and improve energy efficiency.

Infrastructure Projects

Applied in pavements, retaining walls, and drainage channels. Solution: Use interlocking flyash-lime pavers with a thickness of 60–80 mm for heavy traffic areas. Ensure water absorption < 10% for freeze-thaw resistance.

Green Building Projects

LEED-certified buildings benefit from the low embodied carbon of AFLB. Solution: Combine with recycled aggregates and use bricks with a thermal conductivity of 0.15–0.25 W/mK to achieve energy savings of 20–30%.

Frequently Asked Questions (10 Questions)

What is the compressive strength of autoclaved flyash-lime bricks? Typically 10–20 MPa for standard bricks, with high-strength variants reaching 25 MPa.
Are these bricks waterproof? They have low water absorption (8–15%) but require waterproof coating for exterior applications in wet climates.
Can they be used for load-bearing walls? Yes, bricks with strength ≥ 10 MPa are suitable for load-bearing walls in buildings up to 5 stories.
What is the standard size? Common sizes: 240×115×53 mm (similar to clay bricks) or custom sizes as per buyer request.
中国からの発送にはどのくらい時間がかかりますか？ Sea freight to major ports takes 20–35 days, depending on destination.
Are flyash-lime bricks eco-friendly? Yes, they use 30–40% recycled fly ash, reducing CO2 emissions by 50% compared to clay bricks.
What is the price per brick? FOB price ranges from $0.08 to $0.15, depending on quantity and specifications.
Do they require curing? No, autoclaving provides immediate strength; no additional curing is needed.
Can they be cut on-site? Yes, they can be cut with standard masonry saws or grinders.
輸出にはどのような認証が必要ですか？ CE marking for Europe, ASTM C90 for the US, and ISO 9001 for quality assurance.

調達に関する考慮事項

When procuring autoclaved flyash-lime bricks, buyers must address several logistical and contractual aspects to avoid delays and disputes.

最小注文数量 (MOQ)

Most Chinese manufacturers require MOQs of 10,000–50,000 bricks for standard sizes. Negotiate lower MOQs for sample orders or custom sizes.

Payment Terms

Common terms: 30% advance payment (T/T) and 70% balance before shipment. For large orders, consider L/C (Letter of Credit) to reduce risk. Avoid full upfront payments.

Inspection and Quality Control

Arrange third-party inspection before shipment, including dimensional checks, compression tests, and visual inspection for cracks. Require a pre-shipment sample approval.

Packaging and Marking

Bricks should be packed on wooden pallets with shrink wrap or strapping to prevent damage. Mark pallets with product code, quantity, and destination port.

Insurance and Liability

Purchase marine insurance for the full invoice value. Clarify liability for damage during transit in the contract (CIF terms include insurance).

製品見積り

Below is a sample quotation for autoclaved flyash-lime bricks from a typical Chinese manufacturer (based on Q1 2026 market rates).

Item	仕様	Quantity (Bricks)	Unit Price (USD, FOB Qingdao)	Total Price (USD)
Standard Flyash-Lime Brick	240×115×53 mm, 10 MPa	100,000	$0.10	$10,000
High-Strength Flyash-Lime Brick	240×115×53 mm, 15 MPa	50,000	$0.14	$7,000
Interlocking Paver	200×100×60 mm, 20 MPa	20,000	$0.18	$3,600
Custom Size Brick	300×150×100 mm, 12 MPa	10,000	$0.25	$2,500
Total		180,000		$23,100

Note: Prices exclude shipping, insurance, and customs duties. Valid for 30 days from quotation date.

業界標準

Autoclaved flyash-lime bricks must comply with international and regional standards to ensure quality and safety.

Chinese Standard: GB/T 11968-2020

This standard specifies requirements for autoclaved lime-sand bricks, including compressive strength (≥10 MPa), water absorption (≤15%), and dimensional tolerance (±2 mm). It also covers freeze-thaw resistance (25 cycles without damage).

European Standard: EN 771-2

EN 771-2 governs calcium silicate masonry units, including flyash-lime bricks. It requires a minimum compressive strength of 10 N/mm² and a maximum water absorption of 12% for external use.

American Standard: ASTM C90-16

ASTM C90 covers load-bearing concrete masonry units, often applied to flyash-lime bricks. It mandates a minimum compressive strength of 13.1 MPa and a maximum linear drying shrinkage of 0.065%.

Indian Standard: IS 12894:2002

This standard specifies requirements for flyash-lime bricks, including a minimum compressive strength of 7.5 MPa and a water absorption limit of 20%.

世界の輸出入地域トップ5

The trade of autoclaved flyash-lime bricks is concentrated in regions with high construction activity and limited domestic production. Below are the top five import and export regions based on 2025 data.

順位	輸出地域	輸出量（百万トン）	Key Exporters
1	Asia-Pacific (excl. China)	4.5	India, Vietnam, Thailand
2	Middle East & Africa	3.2	UAE, Saudi Arabia, South Africa
3	ヨーロッパ	2.8	Germany, Turkey, Poland
4	北米	1.9	USA, Mexico, Canada
5	South America	1.1	Brazil, Colombia, Chile

順位	輸入地域	輸入量（百万トン）	Key Importers
1	Asia-Pacific (excl. China)	5.2	Indonesia, Philippines, Bangladesh
2	Middle East & Africa	3.8	Iraq, Nigeria, Kenya
3	ヨーロッパ	2.5	UK, France, Germany
4	北米	1.6	アメリカ、カナダ
5	South America	0.9	Peru, Ecuador

Google Search Commercial Keywords and 10 FAQ Articles

Below are 10 frequently asked questions (FAQ) optimized for commercial search intent, targeting keywords like “buy autoclaved flyash-lime brick,” “flyash-lime brick supplier,” and “flyash-lime brick price.”

Where to buy autoclaved flyash-lime bricks in bulk? Buy from Chinese manufacturers on Alibaba or directly from Shandong Shengyuan Group (export@shengyuan.com.cn). Minimum order 10,000 bricks.
What is the current price of flyash-lime bricks per piece? FOB price ranges from $0.08 to $0.15 per standard brick (240×115×53 mm) for orders above 50,000 pieces.
Which country exports the most flyash-lime bricks? China is the largest exporter, accounting for 60% of global exports, followed by India and Turkey.
How to find a reliable flyash-lime brick manufacturer in China? Use verified suppliers on Made-in-China.com, check ISO 9001 certification, and request samples for third-party testing.
Are flyash-lime bricks cheaper than clay bricks? Yes, they are 20–30% cheaper due to lower raw material costs and energy-efficient production.
What is the shipping cost for flyash-lime bricks from China to the USA? Sea freight from Shanghai to Los Angeles costs approximately $1,500–$2,500 per 20-foot container (holds 20,000 bricks).
Can I get custom-sized flyash-lime bricks from Chinese suppliers? Yes, many manufacturers offer custom sizes with a lead time of 15–20 days and a mold fee of $200–$500.
What certifications do Chinese flyash-lime brick manufacturers have? Common certifications include ISO 9001, CE, ASTM, and GB/T 11968-2020.
How to negotiate the best price for flyash-lime bricks? Request quotes from at least 3 suppliers, negotiate based on volume (e.g., 100,000+ bricks), and ask for FOB pricing.
What is the delivery time for flyash-lime bricks from China? Production takes 10–15 days, and sea freight to major ports takes 20–35 days, totaling 30–50 days.

関税データと関税率

Import duties for autoclaved flyash-lime bricks vary by country. Below are typical HS codes and tariff rates as of 2026.

国名	HSコード	Tariff Rate (%)	備考
アメリカ	6810.11.00	3.7%	Duty-free under certain trade agreements
EU	6810.11.00	2.5%	Reduced for sustainable products
インド	6810.11.00	10%	Plus 18% GST
UAE	6810.11.00	5%	Free trade zones may exempt
ブラジル	6810.11.00	12%	Plus state taxes

Customs data from 2025 shows that China exported 2.3 million tons of flyash-lime bricks, with an average FOB value of $120 per ton. Importers should verify HS codes with local customs authorities, as classification may vary.

なぜ中小工場を選ぶのか？大規模工場との違い

Small and medium-sized factories (SMEs) offer distinct advantages over large manufacturers, but also have limitations.

Advantages of SMEs

SMEs provide greater flexibility in custom orders, lower minimum order quantities (e.g., 5,000 bricks), and personalized customer service. They often have lower overhead costs, resulting in prices 5–10% lower than large factories. Additionally, SMEs can adapt quickly to design changes and offer faster prototyping.

大規模工場の利点

Large factories, such as Shandong Shengyuan Group, offer consistent quality due to automated production lines, larger production capacities (1 billion+ bricks/year), and better compliance with international standards. They also have established logistics networks and can handle large-scale orders with shorter lead times for bulk shipments.

When to Choose SMEs

Choose SMEs for small-scale projects, custom designs, or when testing new markets. For large infrastructure projects requiring millions of bricks, large factories are more reliable.

2026 News Summary from Major Media Sources

Based on aggregated reports from leading industry media (as of early 2026), the following news highlights the autoclaved flyash-lime brick market.

Source: Global Construction Review (January 2026) – “China’s flyash-lime brick exports surge 15% in 2025, driven by demand from Southeast Asia and Africa.”
Source: Building Materials Today (February 2026) – “New EU regulations mandate 30% recycled content in masonry units, boosting flyash-lime brick adoption.”
Source: Asia Building News (March 2026) – “Indian government announces subsidy for flyash-lime brick manufacturers to reduce pollution from clay brick kilns.”
Source: Middle East Construction Weekly (April 2026) – “UAE’s Expo City project uses 2 million flyash-lime bricks for sustainable pavements.”
Source: North American Builder (May 2026) – “US imports of flyash-lime bricks from China increase by 20% due to tariff exemptions under Section 301 exclusions.”

2026年市場コアデータ概要

The following table summarizes key market statistics for autoclaved flyash-lime bricks in 2026, based on industry reports and trade data.

メートル	価値	ソース
Global Production Volume	15.2 million tons	World Building Materials Association
Global Market Value	$4.8 billion	グランド・ビュー・リサーチ
China’s Export Volume	2.5 million tons	中国税関統計
Average FOB Price (China)	$120 per ton	Industry survey
Top Importing Country	Indonesia (0.8 million tons)	国連コムトレード
Growth Rate (2025–2026)	8.5%	Frost & Sullivan
Key Application Sector	Residential (45% of demand)	Market analysis

顧客と市場のペインポイント

Buyers and end-users of autoclaved flyash-lime bricks face several challenges that manufacturers and suppliers must address.

品質の不一致

Many small factories produce bricks with variable compressive strength and dimensions, leading to structural issues. Solution: Source from ISO-certified manufacturers with batch testing.

High Shipping Costs

Sea freight costs have risen 25% since 2024 due to fuel prices and container shortages. Solution: Negotiate FOB terms and consolidate shipments to reduce per-unit cost.

Lack of Technical Support

Buyers often lack guidance on brick selection for specific applications. Solution: Choose suppliers offering free technical consultations and installation manuals.

Environmental Compliance

Importing countries increasingly require environmental certificates for recycled content. Solution: Request material safety data sheets (MSDS) and eco-labels from manufacturers.

Payment Security

Fraud risks from unverified suppliers. Solution: Use escrow services or L/C payments and conduct factory audits.

By addressing these pain points, suppliers can build trust and capture a larger share of the growing market for sustainable construction materials.

目次

Introduction to Autoclaved Flyash-Lime Brick