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ASTM A563 Heavy Hex Nut
Steel Structure Construction: ASTM A563 Heavy Hex Nut Can Connecting beams, columns, and bracing systems in commercial buildings and industrial facilities. Bridge & Highway Projects: ASTM A563 Heavy Hex Nut Can Used in bearing connections, anchor systems, and seismic components requiring long‑term durability. Energy & Petrochemical Facilities: Securing equipment, pipe racks, and structural supports in power plants and oil/gas installations. Heavy Machinery & Transportation: Supporting high‑vibration, high‑load assemblies in rail, port, and manufacturing equipment.
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ASTM A490 Type 1 Heavy Hex Structural Bolt
ASTM A490 Type 1 Heavy Hex Structural Bolt is a high‑strength structural fastener made from alloy steel, offering higher tensile strength than A325. Commonly used in heavy steel structures, high‑rise buildings, bridges, and industrial facilities. Complies with ASTM A490 Type 1 standard. Black oxide finish is standard; other coatings are available on request.
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Stainless Steel Flange Bolts
As a professional Stainless Steel Flange Bolts manufacturer and supplier in China, our factory has the latest technology and production equipment, which can provide customers all over the world very good service.We are Ningbo Gangtong Zheli Fasteners Co., Ltd., with over 20 years of experience in fastener research, development, and manufacturing. We are a source manufacturer specializing in high-quality stainless steel fasteners.
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Square Head Flange Bolts
Gangtong Zheli professionally produces high-quality Square Head Flange Bolts. Our factory also provides customized services and free samples for you. We are a source factory with over 15 years of experience in fastener manufacturing. For many years, we have been deeply involved in the industry, serving global construction contractors, wood processing plants, and heavy equipment manufacturers. Based on our deep understanding of various real-world working conditions, we know that the gripping force of the square head and the anti-loosening performance of the flange are crucial for ensuring project safety.
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Socket Head Flange Bolts
As the manufacturer and supplier in China, we offer customized Socket Head Flange Bolts in high quality but at a cheap price for wholesalers.Our Socket Head Flange Bolts are manufactured in strict accordance with international and national standards such as DIN 7991, ISO 10642, and GB/T 2673. They combine the convenient assembly of socket head bolts with the reliable anti-loosening properties of flange bolts, and are specifically designed for precision engineering applications, providing robust connection security for various types of precision equipment.
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Partial Threaded Flange Bolts
The Partial Threaded Flange Bolts is produced by Gangtong Zheli; we are one of the leading manufacturers and suppliers in China. Our Partial Threaded Flange Bolts are manufactured in strict accordance with international and national standards such as ISO 4162 and DIN 6921. They feature a "smooth shank + threaded" partial thread design, combined with an integrated flange, offering both superior load-bearing capacity and precise positioning. This provides a stable and reliable connection solution for heavy-duty and high-precision assembly applications.
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