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High Strength Large Hex Head Bolts for Steel Structure

High quality High Strength Large Hex Head Bolts for Steel Structure is offered by China manufacturers DONGSHAO. Buy High Strength Large Hex Head Bolts for Steel Structure which is of high quality directly with low price.

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Product Description

Hebei Dongshao Fastener Manufacturing Co., Ltd. is a well-known supplier and manufacturer of high strength large hex head bolts for steel structure in China.

Product Description & Key Features

Our high-strength large hex head bolts are specifically engineered for heavy-duty structural steel connections where safety, reliability, and load-bearing capacity are non-negotiable.

Exceptional Load Capacity: Engineered for heavy industrial and structural applications subject to high stress and massive dynamic loads.

Superior Corrosion Resistance: Manufactured with premium materials and advanced surface treatments, making them ideal for harsh environments and outdoor infrastructure.

Advanced Anti-Loosening Technology: Compatible with separation lock nuts, flat washers, and self-locking mechanisms to maximize clamping force and prevent loosening under vibration.

Extended Service Life: Heavy-duty construction ensures structural integrity, reducing maintenance costs and ensuring long-term durability.

Core Applications

Our structural bolts are widely trusted across global infrastructure projects, including:

Infrastructure: Railway & Highway Bridges, Rail Transit, and Port Machinery.

Energy & Power: Wind Power, Nuclear Power, Solar Photovoltaic (PV) Structures, and Boiler Steel Frameworks.

Civil & Industrial Construction: High-Rise Buildings, Industrial Plants, and Tower Structures.

Heavy Machinery: Lifting and Mining Equipment.

Product Parameter

(mm)	M12	M16	M20	M22	M24	M27	M30
P	1.75	2	2.5	2.5	3	3	3.5
da max	15.23	19.23	24.32	26.32	28.32	32.84	35.84
ds max	12.43	16.43	20.52	22.52	24.52	27.84	30.84
ds min	11.57	15.57	19.48	21.48	23.48	26.16	29.16
e min	22.78	29.56	37.29	39.55	45.2	50.85	55.37
k max	7.95	10.75	13.4	14.9	15.9	17.9	19.75
k min	7.05	9.25	11.6	13.1	14.1	16.1	17.65
r min	1	1	1.5	1.5	1.5	2	2
s max	21	27	34	36	41	46	50
s min	20.16	26.16	33	35	40	45	49

Full Product Portfolio

As a group enterprise, we offer a comprehensive range of premium fastening solutions:

Structural Steel Fasteners: Large Hex Bolts (A325 / A490), Tension Control (TC) / Button-Shear Bolts.

Standard Bolts & Nuts: High-Strength Hex Bolts & Nuts, Full Thread Studs (ANSI/ASME B7, GB/T20634).

Specialized Industries: Photovoltaic Hot-Dip Galvanized Bolts, Wind Power Bolts, High-Speed Rail Fasteners.

Anchoring Systems: Chemical Anchors, Mechanical Anchors, Expansion Bolt Series.

Washers & Accessories: ANSI/ASME F436 Flat Washers, ANSI/ASME A563 Nuts, Stainless Steel Bolt Combinations.

Our Trusted Global Clients

We are proud, long-term partners with some of the world's leading engineering, construction, and heavy industry corporations:

China Railway (Seventh Group & 14th Bureau)

CFHI Tianjin Heavy Industry Co., Ltd.

China Jianzhong Nuclear Fuel Co., Ltd.

Sinohydro Bureau 12 Co., Ltd.

Fujian Hongguan Road & Bridge Anti-Corrosive Technology Co., Ltd.

Jiuye Construction Co., Ltd.

Xinbang Construction Group Co., Ltd.

360° End-to-End Service

Pre-Sale Consultation: Expert technical consultation, product benefit analysis, and tailored engineering solutions tailored to your project requirements.

In-Sale Logistics: Seamless order processing, transparent real-time logistics tracking, and secure packaging to ensure safe, on-time delivery.

After-Sales Support: Continuous technical support, maintenance guidance, and training sessions to maximize the lifecycle and value of your products.

[Contact Us Today for a Factory-Direct Price List!]

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