QUALITY
With high quality products,perfect services, preferential prices
RICH EXPERIENCE
In the past ten years, the company has developed rapidly
BEST SERVICE
Well trained and experienced staff to answer all your inpqiry in 24 hours.
OUR PRODUCTS
Our products consist of heavy hex bolts & heavy hex nuts, threaded rod & studs, washers and screws...
10
Years of ExperienceAbout Us
Ningbo Gangtong Zheli Fasteners Co.,Ltd. is a manufacturer in China which mainly produces high strength standard fasteners. Our products consist of heavy hex bolts &heavy hex nuts, threaded rod & studs, washers and screws, which are made from both carbon steel, alloy steel and stainless steel. We were established in 2001 and have developed rapidly in the past ten years. The factory is located in Ningbo Zhenhai Chemical industrial area and its headquarter/foreign sales department in Ningbo Jiangdong Eastern Business Centre. The factory now covers an area of approximately 15,000 square meters, with monthly production capacity of 2000 tons. The company has its all-around research system, supply management, large-scale warehouse, metal fastener system, and advanced supply chain management technology with metal fasteners MRO-based integrated procurement distribution business, with annual sales over $15,000,000.
Company Strength
Our Production Section
The company's monthly production capacity is 2000 tons.
Annual sales
The company's annual sales exceed $15,000,000.
Good Quality
We are a quality conscious company, innovating new production techniques to continuously enhance efficiency to offer quality products.
Team Of Professionals
The company is bestowed by versatile manufacturing unit and team of experts.
7 Days Return
Simply return it within 7 days for an exchange.
100% Payment Secure
We ensure secure payment with PEV.
PRODUCTS WE OFFER
Solar Accessories
Solar Accessories
Solar roof tilting bracket system has great flexibility for the design and planning of commercial or civil roof solar system.
Know MoreBracket
Bolt
Bolt
The bolt is a type of fastener consisting of a head and a screw (cylinder with external thread).
Know MoreNuts
Screw
Screw
The function of the screw is mainly to connect the two workpieces together and play a fastening role.
Know MoreThreaded Rods
Threaded Rods
Threaded Rods are mechanical parts with internal or external threads, which are generally used as fasteners...
Know MoreAnchor
Washers
Washers
Washers are usually metal and plastic and rubber. High-quality bolted joint require hardened steel washers..
Know More
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DIN 6914 Large Hex Head Structural Bolt | Grade 8.8 10.9 | HDG / Black / Zinc -
DIN 933 Hex Bolt | Full Thread | 4.8 8.8 10.9 12.9 | Carbon Steel / Stainless Steel -
ASTM A490 Type 1 Heavy Hex Structural Bolt, Carbon Steel, Hot Dip Galvanized -
DIN603 Stainless Steel A2-70 SS304 SS316 Carriage Bolt Mushroom Round Head With Square Neck Bolts -
8.8 Grade Carbon Steel Hot Dip Galvanized Guardrail Bolts -
DIN603 Hot DIP Galvanized Gr8.8 Carriage Bolt -
High Strength 4.8/8.8/10.9/12.9 grade Carbon Steel Hot Dipped Galvanized HDG Carriage Bolt Use for electric tower
Ningbo Gangtong Zheli Fasteners Co.,Ltd.
For inquiries about hex bolt, hex nut, self tapping screw or price list, please leave your email to us and we will be in touch within 24 hours.
News
DIN 933 Full-Thread Hex Bolts: Global Standard for Reliable Assembly in 2026 In 2026, DIN 933 full-thread hex bolts remain one of the most widely used metric fasteners across machinery, construction, automotive, steel structures and equipment assembly. As a globally recognized standard aligned with ISO 4017 and ISO 898-1, DIN 933 ensures consistent dimensions, thread quality......
Ningbo Gangtong Zheli Fasteners: 25 Years of Strength in High‑Strength Fasteners for Global Projects In March 2026, the management and production teams of Ningbo Gangtong Zheli Fasteners Co., Ltd. held a special quality improvement meeting at its 15,000 sqm factory in Zhenhai Chemical Industrial Zone, Ningbo, China. The event was launched to further enhance product stability and meet growing global......
2026 Global High‑Strength Structural Fasteners: Growth Drivers, Standards and Supply Opportunities As infrastructure investment, energy transition and industrial upgrading accelerate worldwide in 2026, high‑strength structural fasteners have become essential components ensuring safety, stability and long service life in engineering projects. Heavy hex bolts, threaded rods, structural nuts and har......
New Products
DIN 6914 Large Hex Head Structural Bolt | Grade 8.8 10.9 | HDG / Black / Zinc DIN 933 Hex Bolt | Full Thread | 4.8 8.8 10.9 12.9 | Carbon Steel / Stainless Steel ASTM A490 Type 1 Heavy Hex Structural Bolt, Carbon Steel, Hot Dip Galvanized 
Gr 8 Carbon steel High Tensile Black DIN6915 Hex Heavy Nuts 
M6 M8 M10 Stock Carbon Steel White Blue Zinc Plated Long Nut Coupling Nut 
ASTM 1/2" 3/8" 9/16" Gr2 Plain Lock Nut Hexagon Prevailing Torque Nuts 
Galvanized Steel Zinc Plated Press Self Clinching Nut 
Non-standard Carbon Steel Blue White Zinc Plated Flat Head Hex Neck Carriage Bolt
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