Jinjiang Tagong Hardware Forging Manufacturer Co. LTD
Pioneering excellence at the forefront of the fastener industry, proudly serving the industry since our inception in 1985,and boasting a remarkable legacy spanning over 39 years of expertise.
Demonstrating unparalleled expertise in adhering to globally recognized standards (GB, DIN, ISO, UNI, JIS, GOST, ANSI, and ASTM ), and offering bespoke customization meticulously crafted to meet your exact specifications.
Fish bolts, also known as fishtail threads, are specialized fasteners meticulously crafted for the connection of rail joint clamps, or fishtail plates. Predominantly utilized in the meticulous track-laying of industries such as metallurgy, coking, steel, and more, they ensure the steadfast union and security of rails and their joints. In certain scenarios, hexagonal bolts may serve as alternatives. The paramount function of these fish bolts is to guarantee the unwavering stability and safety of rail joints, enduring the immense pressure and vibrations induced by the dynamic operation of trains.
Product Features and Design Advantages
Forged from high-strength steel, such as 45# or Q235, fish bolts exude an impressive yield point and tensile strength, adeptly bearing the colossal pressure of high-velocity trains. Ingeniously engineered with a unique anti-loosening design, they effectively avert loosening due to train-induced vibrations, thus securing transportation safety. The fishtail-shaped bolt head facilitates swift and precise location and tightening by workers. Moreover, fish bolts treated with special surface coatings boast exceptional corrosion resistance, ensuring consistent performance even in the harshest environments, with a service life extending over decades.
Model specification and material selection
Fish bolts come in a variety of common models, including Φ14×70, Φ16×75, Φ18×90, Φ20×90, Φ22×135, and Φ24×135. These models are typically crafted through hot pressing or cold heading with the aid of a friction press. The materials predominantly consist of ordinary carbon steel (Q235) and robust high-strength steel (45#), along with specialized variants like insulated fish bolts. Performance grades span from 4.6 to 12.9, with grades 8.8 and upward classified as high-strength bolts, meticulously formed from low-carbon alloy or medium-carbon steel, and subjected to heat treatment for optimal strength.
Installation precautions
For seamless installation of fish bolts, heed the following precautions: lubricate the contact points between fish plate, rail, and bolts with oil; if misalignment occurs during insertion, opt to adjust the fish plate by gentle tapping, rather than forcing; adopt a tightening sequence beginning with the center followed by the sides (ideal for four-hole fish plates) using a wrench of specified length, such as a 55 cm screw wrench. Avoid simultaneous tightening by multiple individuals to prevent over-tightening. Bolt caps should strategically cross-install on both inner and outer lines to mitigate complete severance in derailment scenarios.
Application fields and importance
Fish bolts find extensive application across rail transportation sectors, including railways, subways, and light rails, representing vital components that ensure the unwavering safety of track connections. Their exceptional reliability and streamlined installation dramatically diminish the likelihood of railway mishaps, serving prestigious international projects such as the European ICE high-speed rail and the US Amtrak. Revered as the 'rice of industry,' fish bolts further contribute significantly to ships, vehicles, water conservancy projects, and a plethora of other fields.
Materials and surfaces can be customized as follows:
| Mechnical Property |
Material |
Surface Treatment |
| Class 4 / 6 / 8/ 10 /12 |
C45
40Cr
35CrMo
42CrMo
304
316
35K...... |
♦Yellow Zinc
♦Zinc Plated
♦Black Oxide
♦Phosphate
♦Dacromet
♦Geomet |
Packaging Details: Our Custom Size 4.8 Railway Fish Bolt Plate and Nut with Buyer Coating is expertly packaged to perfection. Each unit is secured in a 25kg carton, designed with precision to meet your unique needs. Choose pallet sizes ranging from 1.5 to 2.5 tons for optimal efficiency and safety during transit, ensuring your products arrive in pristine condition.
For more insights and detailed information about our Custom Size 4.8 Railway Fish Bolt Plate and Nut with Buyer Coating, feel free to reach out to our knowledgeable team. We are here to assist you with any inquiries you may have.
Note: Please contact us for a personalized re-quote before placing an order, as fluctuating material prices may affect the total cost. We are committed to providing transparent and up-to-date pricing.
WHOWE ARE
With an impressive 39With an impressive 39 years of refined expertise, Jinjiang Tagong Hardware Forging Manufacturer Co. Ltd. stands proudly at the forefront of crafting both standard and bespoke fasteners. Our unmatched prowess is showcased by an annual production capacity reaching a staggering 30,000 tons, complemented by sales that soar beyond an astounding 200 million. Our dedication to excellence and precision has solidified our position as industry leaders. Our sprawling facility, a testament to our commitment to innovation and quality, spans an expansive 60,000 square meters. It is equipped with 35 state-of-the-art hot-forging machines, alongside 300 advanced machining units, all operated by a dedicated team of 200 skilled professionals who bring our visions to life.
Over three decades of unyielding dedication and relentless innovation have allowed us to develop a sophisticated system of forging and precision machining. This evolution is underpinned by cutting-edge production and inspection equipment, CNC technology, and automated forging lines, which collectively set us apart and ensure our continued leadership in the industry.
Driven by an unwavering commitment to unparalleled quality, we have successfully emerged as a global supplier. Proudly holding ISO9001 certification and having passed rigorous SGS testing, our premium products are celebrated and cherished by a loyal clientele across Europe, North America, and South Asia, marking our global footprint.
Development
Progress Evolution
Production Facility
1. Q: What about MOQ?
A: It depends on the size of the products.
2. Q: What are your advantageous products?
A: All kinds of standard and customized fasteners.
3. Q: How many staff are in your company?
A: About 200 staff in our factory.
4,Q: What about your annual production capacity?
A :About 30000 tons per year.
5,Q :Do you have an ISO 9001 certificate?
A: Yes, we do.
6, Q: Can you provide the CBAM report?
A: Yes, of course
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