- Ningbo Zhongli bolts manufacturing Co., Ltd. +86-574-86587617
- tan@nbzyl.com
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Optimized for structural steel buildings, bridge construction, and heavy industrial engineering across Bangladesh
Bangladesh is undergoing a historic transformation. Driven by massive national megaprojects, urban expansion, and a booming industrial sector, the country's demand for high-quality industrial fasteners has reached unprecedented heights. From the bustling industrial zones of Gazipur and Narayanganj to the mega ports in Chittagong and Matarbari, high-strength structural bolts are the silent backbones holding the nation's new landscape together.
As a leading China Hex Bolt Factory & Supplier for the Bangladesh market, Ningbo Zhongli Bolts Manufacturing Co., Ltd. understands the unique requirements of this tropical, rapidly developing nation. High humidity, heavy monsoon seasons, and coastal saline environments require fasteners with superior corrosion resistance and exceptional mechanical integrity. We supply hot-dip galvanized (HDG), zinc-plated, and black-oxide coated fasteners that meet rigorous international standards (DIN, ISO, ANSI/ASME) to ensure long-term safety in critical Bangladeshi infrastructure.
Whether it is the construction of Readymade Garment (RMG) steel-structure warehouses, high-voltage power transmission towers across the Padma River, or railway extensions connecting Dhaka to Cox's Bazar, our bolts provide the exact tensile strength and durability needed for these challenging applications.
Ningbo Zhongli Bolts Manufacturing Co., Ltd. founded in 2003, is a professional manufacturer of high-strength fasteners in different specifications for various models, which is covering an area of about 10,000 square meters, registered capital of 1,500,000 RMB, with the total annual productivity of 8,000 tons per year. The company has set up several sales branches in different provinces in China. Meanwhile, the company's products are exported to Europe, USA, Middle East, Africa, Southeast Asia and other regions. The company has strong technical ability, complete testing equipments and a variety of fully automatic multi-station cold and hot heading machines, so as to provide you with reliable and high quality products.
For the Bangladeshi market, we offer streamlined logistics, direct factory pricing, and customized packaging options. Our dedicated export team ensures smooth customs clearance at Chittagong Port, making us the preferred supplier for major construction contractors in Dhaka, Sylhet, and Khulna.
Read More Company ProfileEngineered to withstand the toughest mechanical loads and environmental stresses in South Asia
Our main products ZYL brand fasteners include structural hex bolts ASTM A325 type 1, A490, hex head bolts DIN931, DIN933, EN14399, DIN6914, ISO4014, ISO4017 Gr8.8 Gr10.9 Gr12.9, ANSI B18.2.1 UNC and UNF Gr5, Gr8, fine pitch hex bolts DIN960, DIN961 Gr8.8 Gr10.9 Gr12.9, hex socket cap screws DIN912, ISO4762 Gr8.8 Gr10.9 Gr12.9 with surface Black, Zinc plated, Hot dip galvanized. Diameters from M10 to M48, length no limited. Hex Flange bolts DIN6921 Gr8.8 Gr10.9 with serration, thread rod A193 B7 long sizes and short sizes with 2H nuts, stud bolts. We also can supply hex nuts DIN934, DIN6915, plain washers DIN125, DIN126, DIN6916, spring washers DIN127 with Black, Zinc plated and Hot dip galvanized surface.
Our physical and mechanical test results can reach to ISO898-1 for bolts and ISO898-2 for nuts. Through scientific management, Ningbo Zhongli Bolts Manufacturing Co., Ltd. obtained ISO9001 certificate of Quality Management System. Quality is the most important for us. We have strict production and inspection equipments to support this point.
We manufacture Grade 8.8, 10.9, and 12.9 bolts, along with ASTM A325 & A490 structural bolts, ensuring maximum load-bearing safety for heavy structures.
Options include Hot Dip Galvanizing (HDG) for coastal environments, zinc electroplating, and black oxide, ensuring a long lifespan under Bangladesh's humid weather.
Available in diameters from M10 up to M48, with custom lengths, thread pitches (UNC, UNF, Metric Coarse/Fine), and custom flange configurations.
Where ZYL fasteners secure critical infrastructure and industrial operations
The Ready-Made Garment industry is the backbone of Bangladesh's economy. Modern RMG factories in Gazipur, Savar, and Tongi rely on our high-strength DIN933 and ASTM A325 hex bolts to erect safe, large-span pre-engineered steel buildings (PEB).
With rivers crisscrossing the country, bridges are vital. Our heavy hex structural bolts and hot-dip galvanized nuts are widely used in bridge trusses, highway guardrails, and elevated expressways, safeguarding public transport links.
As Bangladesh expands its national electricity grid, high-voltage transmission towers are built across rural and riverine areas. Our hot-dip galvanized structural bolts prevent rust and structural failures in these high-exposure outdoor settings.
State-of-the-art cold and hot heading machinery combined with rigorous quality checkpoints
Highly requested fastener models in Bangladesh industrial markets
Our competitive advantages as a global fastener manufacturer
A Professional Sales and Technical Team with More Than 20 Years History in export manufacturing.
We Have Our Own Testing Equipment and Laboratory. Our Products undergo Initial, Patrol, and Final Inspection.
Our Factory has its own Cold Forging, Hot Forging, and Heat Treatment lines to control product quality end-to-end.
We keep standard fasteners in stock. Custom non-standard fasteners can be manufactured according to drawings.
Providing seamless procurement, localized support, and rapid global supply chains
We believe that high-strength fasteners are safety-critical elements. A single bolt failure can compromise an entire steel structure. Therefore, we subject our products to three layers of quality testing:
All our testing results strictly comply with ISO 898-1 standards for bolts and ISO 898-2 for nuts, giving Bangladeshi engineers peace of mind.
Learn More About Inspection
EN 15048 CE Certification, EN14399 CE Certification, ISO9001 Certificate
What our global and regional partners say about ZYL Fasteners
Browse our complete list of industrial-grade bolts, nuts, studs, and custom fasteners
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