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Gongjiaocao is a general term for the three most common types of steel structural profiles used in buildings, namely I-beams, angle steels, and channel steels. They are all made by hot rolling carbon steel or low-alloy steel, with the characteristics of regular cross-sectional shape and excellent mechanical properties.
  • High quality Angle Steel Supplier

    High quality Angle Steel Supplier

    Angle Steel, also known as L-shaped steel or angle bar, is a fundamental and indispensable rolled steel product characterized by its perpendicular L-shaped cross-section. Its simple yet robust design offers an exceptional strength-to-weight ratio, making it a cornerstone component across countless industries worldwide.

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  • ASTM 200*200 Channel Steel

    ASTM 200*200 Channel Steel

    Channel Steel, also known as C-channel or structural channel, is a hot-rolled carbon steel product characterized by its distinctive "C" or "U" shaped cross-section. It consists of a vertical web connected at both ends to two horizontal flanges.

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  • HE140A H-Beam

    HE140A H-Beam

    The H-Beam, also known as a wide flange beam, is a premier structural steel profile characterized by its distinctive "H" shape. Engineered for optimal load-bearing efficiency, it is the fundamental component in constructing the skeletons of modern infrastructure, from towering skyscrapers and expansive bridges to heavy-duty industrial platforms.

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  • S275JR Channel Steel

    S275JR Channel Steel

    S275JR Channel Steel, commonly designated in Europe as UPN (Ungleichschenkliger Profil Stahl Normal or Unequal Flange Channel) or simply as C-section, is a hot-rolled, non-alloy structural steel grade defined by the European standard EN 10025-2. It is one of the most widely used carbon structural steels due to its excellent combination of strength, weldability, and cost-effectiveness.

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  • S235JR Channel Steel

    S235JR Channel Steel

    S235JR channel steel, commonly known as UPN (European standard) or UNP (international designation) sections, is a fundamental and widely used structural carbon steel product. Its distinctive "C" or "U" shape provides an excellent combination of good mechanical properties and high moment of inertia, making it a versatile choice for a multitude of load-bearing applications in construction and manufacturing.

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  • Q460 Channel Steel

    Q460 Channel Steel

    Q460 Channel Steel is a high-strength, low-alloy (HSLA) structural steel channel, widely recognized for its exceptional mechanical properties and durability. The "Q" in its designation stands for Yield Strength, and "460" indicates a minimum yield strength of 460 Megapascals (MPa). This makes it significantly stronger than common mild steel channels like Q235 or A36, which have yield strengths of 235 MPa and 250 MPa, respectively.

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  • Q420 Channel Steel

    Q420 Channel Steel

    Q420 Channel Steel is a high-strength, low-alloy (HSLA) structural steel channel, widely recognized for its exceptional mechanical properties and durability in demanding construction and industrial applications. Its name is derived from the Chinese GB standard, where "Q" stands for Yield Strength, and "420" indicates a minimum yield strength of 420 Megapascals (MPa).

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  • SS400 Channel Steel

    SS400 Channel Steel

    SS400 Channel Steel is a widely used structural carbon steel product, recognized for its excellent strength, formability, and cost-effectiveness. The "SS400" designation is a Japanese Industrial Standard (JIS G 3101) grade, where "SS" stands for "Structural Steel" and "400" indicates the minimum tensile strength of 400 MPa (or 41 kgf/mm²).

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  • Q345 Channel Steel

    Q345 Channel Steel

    Q345 Channel Steel is a hot-rolled structural steel channel belonging to the Chinese low-alloy high-strength structural steel grade Q345. It is one of the most widely used steel profiles in construction and industrial applications due to its excellent mechanical properties, good weldability, and cost-effectiveness.

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  • Q235 Channel Steel

    Q235 Channel Steel

    Q235 Channel Steel is a highly common and versatile hot-rolled structural steel channel, widely used in construction and manufacturing across China and in international projects. Its name derives from its two key characteristics: its material grade (Q235) and its cross-sectional shape (Channel or C-Shape).

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  • AH36 H-Beam

    AH36 H-Beam

    The A36 H-beam is a quintessential structural member widely used in the construction and manufacturing industries. It is defined by two key characteristics: its chemical and mechanical properties, which adhere to the ASTM A36 standard, and its shape, which resembles the letter "H" in cross-section.

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  • Q345B H-Beam

    Q345B H-Beam

    Q345B H-Beam is a hot-rolled structural steel section widely recognized for its excellent mechanical properties, cost-effectiveness, and versatility. Its distinctive "H" cross-section makes it a fundamental component in modern construction and heavy engineering projects worldwide.

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  • Q235B H-Beam

    Q235B H-Beam

    Q235B H-Beam is a highly versatile and widely used structural steel section, characterized by its distinctive "H" cross-section. It is a fundamental component in modern construction and industrial manufacturing due to its excellent mechanical properties, cost-effectiveness, and ease of fabrication.

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