- Ningbo Zhongli bolts manufacturing Co., Ltd. +86-574-86587617
- tan@nbzyl.com
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Switzerland is globally renowned for its precision engineering, ranging from luxury watchmaking to advanced pharmaceutical machinery and high-tech aerospace components. In this demanding environment, the humble spring washer plays a critical role. As a leading manufacturer serving the Swiss market, we understand that "good enough" is never sufficient for Swiss industrial standards.
The Swiss industrial landscape is characterized by a relentless pursuit of quality and reliability. Whether it's the vibration-heavy environment of a Swiss Federal Railways (SBB) locomotive or the delicate assembly of high-precision medical devices in the Lake Geneva region, spring washers are essential for maintaining bolt tension and preventing loosening. Our DIN127 and DIN128 spring washers are engineered to meet these exacting requirements, providing the necessary elasticity and locking force to ensure long-term structural integrity.
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 1500,000 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.
Swiss manufacturers are rapidly adopting smart factory technologies. Our production line uses automated cold-heading to ensure every spring washer meets the digital twin specifications required by modern Swiss assembly lines.
With Switzerland's strict environmental regulations, there is a growing demand for fasteners produced with minimal carbon footprint. We are optimizing our heat treatment processes to reduce energy consumption.
The Jura region's watchmaking and micro-mechanics sectors require spring washers in dimensions that push the limits of traditional manufacturing. We offer specialized small-diameter solutions for these niche markets.
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.
Quality Standard: 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.
Switzerland's mountainous terrain requires infrastructure that can withstand extreme temperature fluctuations and heavy loads. Our hot-dipped galvanized spring washers are used in bridge construction and cable car systems across the Alps, providing corrosion resistance and essential tensioning in harsh environments.
As Switzerland transitions to more sustainable energy, our high-strength fasteners are critical for hydroelectric plants in the Valais region and wind turbine installations. These applications demand DIN127 spring washers that can handle constant mechanical vibrations.
The Swiss rail network is one of the densest in the world. Safety is paramount. Our fasteners meet the rigorous standards required for rolling stock and track maintenance, ensuring that every bolt remains secure under the dynamic stress of daily rail operations.
A Professional Sales and Technical Team with More Than 20 Years History.
We Have Our Own Testing Equipment and Laboratory, Our Products Have Initial Inspection, Patrol Inspection, And Final Inspection.
Our Factory Has Its Own Cold Forged, Hot Forged, And Heat Treatment Equipment.
Standard Fasteners in Stock, Non-standard Fasteners Can Be Customized.
We hope to establish business relationship with all over the world, and our business can bring in mutual benefits for both parties.
EN 15048 CE Certification, EN14399 CE Certification, ISO9001 Certificate
We Can Design Packaging According to the Requirements of Each Customer.
We Supply Samples for Free to Swiss Industrial Partners.
Delivery Time Will Be According to Customer’s Request.
Our supplied goods will be according to all kinds of standard such as DIN, ANSI, GB etc.
As the demand for high-quality fasteners grows in Switzerland, Ningbo Zhongli Bolts Manufacturing Co., Ltd. remains committed to being the premier wholesale spring washer supplier for the Swiss market. Our blend of traditional manufacturing expertise and AI-driven quality control ensures that every product leaving our factory meets the world-class expectations of Swiss engineers.
From the urban development projects in Basel to the precision labs in Lausanne, we provide the hardware that holds Switzerland together. Contact us today for competitive pricing on bulk orders of DIN127 spring washers, hex bolts, and custom fastening solutions tailored for the Swiss industrial sector.
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