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ASTM A307 Grade B, We maintain long-term efforts and self-criticism, which helps us and improvement constantly. We strive to improve customer efficiency to save costs for customers. We do our best to improve the quality of product. We are going to not live up to the historic opportunity of the times.

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  • En14399-3 Grade10 Black Hex Nut with Hr

    En14399-3 Grade10 Black Hex Nut with Hr

    En14399-3 Grade10 Black Hex Nut with Hr is usually used with a bolt and a washer, En14399-3 has several types such as: En14399-3 En14399-4 En14399-5 En14399-6. En14399 is also DIN6914, Bolt and nut gaskets are used in combination. En14399-3 Grade10 Hex Nut with Hr is usually black. Bolts, nuts and gaskets have hr or hv.
  • DIN6916 Steel Structural Flat Washer

    DIN6916 Steel Structural Flat Washer

    DIN6916 Steel Structural Flat Washer is one of our common standard washers, the material of carbon steel, the surface has black oxide,zinc plated. DIN6916 Steel Structural Flat Washer is use with A394 high strength structural bolts. DIN6916 Steel Structural Flat Washer, mainly punched out from iron plates. The common shape of a flat washer is a hole in the central. The pore size specifications according to customer requirements. high quality and lower price. Our company has certificates ISO9001.
  • ASME B182.2.1 Square Head Bolt

    ASME B182.2.1 Square Head Bolt

    ​ASME B182.2.1 Square Head Bolt are similar to Hex Cap screws but have a 4-sided square head instead of a 6-sided hexagonal head. ... They are commonly referred to as both bolts and screws and are designed to be driven with a wrench. ​ASME B182.2.1 Square Head Bolt are partially threaded with a shoulder beneath the head.
  • DIN934 Carbon Steel Hex Cap Nut

    DIN934 Carbon Steel Hex Cap Nut

    DIN934 Carbon Steel Hex Cap Nut play the role of a component of all manufacturing machinery.DIN934 Carbon Steel Hex Cap Nut can fastener other components. DIN934 Carbon Steel Hex Cap Nut have kinds of nut. We have common national standard, German standard, the British standard, American Standard, the subject of the nut. There are many kinds of DIN934 Carbon Steel Hex Cap Nut. DIN934 Carbon Steel Hex Cap Nut is very common.
  • Steel Structure Wedge Anchor

    Steel Structure Wedge Anchor

    Steel Structure Wedge Anchor are designed to tie the concrete slab with the steel beams and steel deck. This weld studs shear connectors can resist shear forces and increase shear loading capacity in steel buildings. Steel Structure Wedge Anchor Mainly applied for through steel deck stud welding in composite construction project. All Shear Studs are supplied with ceramic ferrules (ceramic ring). The Ceramic ferrules are made of cordierite and able to withstand heat shock as well as high temperatures without melting or breaking
  • Hex Socket Bolt

    Hex Socket Bolt

    Hex Socket Bolt is a hexagonal head that allows for easy tightening and loosening, and is made from high-quality steel for maximum durability. With its sturdy construction and robust design, Hex Socket Bolt can withstand high levels of stress and strain, making it an ideal choice for heavy-duty applications. Made from high-quality steel, Hex Socket Bolt is resistant to corrosion and rust, ensuring reliable performance even in harsh environments. Hex Socket Bolt With its high strength, ease of use, versatility, and corrosion resistance, it is no wonder that it is a popular choice for a wide range of applications.
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  • What Is a Stud Bolt, and How Is It Used?

    A stud bolt is a threaded fastener designed for heavy-duty industrial applications where strength, durability, and reliability are critical. It is most commonly used in the oil and gas, construction, and machinery industries to securely fasten components that are exposed to high stress or pressure.

  • Why Are Heavy Hex Bolts Essential for Industrial and Structural Applications?

    Heavy hex bolts are critical fasteners in a wide range of industrial, construction, and structural applications. Their robust design, combined with precise engineering specifications, ensures that machinery, steel structures, and heavy-duty frameworks remain securely fastened under extreme loads and challenging environmental conditions. Unlike standard hex bolts, heavy hex bolts feature a larger, thicker head and stronger shank, which provides enhanced torque distribution and superior load-bearing capacity. This makes them particularly suitable for projects where safety, reliability, and structural integrity are non-negotiable.

  • How Do Flange Bolts Improve Strength in Industrial Applications?

    Flange bolts are among the most widely used fasteners in industrial construction, automotive manufacturing, and heavy machinery. Unlike traditional bolts that require a separate washer, flange bolts are designed with an integrated circular flange beneath the head. This flange acts as a built-in washer, distributing load evenly and reducing the risk of damage to the surfaces being fastened.

  • How Do Hex Socket Bolts Deliver Stronger and More Reliable Fastening Performance?

    Hex Socket Bolts — also known as Allen Bolts or Socket Head Cap Screws — play a vital role in modern mechanical engineering, automotive manufacturing, construction, and industrial machinery. They are designed with a hexagonal recess in the head, allowing tightening or loosening using a hex key or Allen wrench. This unique design ensures that torque is distributed evenly across the bolt head, reducing the risk of slippage and surface damage that can occur with traditional slotted or Phillips head bolts.

  • What Makes a Carriage Bolt Essential in Fastening?

    This in-depth blog explores the full scope of carriage bolts — what they are, how they differ from other bolts, why they are widely used, how to choose the right one, and where they are applied in real-world projects. With expert hardware knowledge and authoritative references, this article aims to help engineers, builders, and DIYers make smarter fastening decisions. Along the way, we’ll touch on material properties, standards, and key design features. The featured company Jiaxing City Qunbang Hardware Co., Ltd. also offers tailored fastener solutions fitting industrial needs.

  • Why do your bolts—despite having the same specifications—always break at the nut?

    In the world of bolted connections, the nut is often seen as a supporting character—unassuming, yet absolutely vital. The heavy hex nut, in particular, takes on the most demanding tasks within this family of components. When a connection must withstand extreme preload, severe vibration, or harsh corrosive environments, a standard nut is simply not enough. The heavy hex nut becomes the only reliable choice. Its practicality rests on four pillars: dimensional advantages, material compatibility, correct selection, and proper installation practices.

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