Shandong Weichuan Metal Prodducts Co., Ltd.

Square tube

  • Customized square tubes of various specifications

    Customized square tubes of various specifications

    Also known as square and rectangular cold-formed hollow section steel, referred to as square tube and rectangular tube, code names are f and j respectively.

  • ASTM A53 A283 A106 A179 A210 galvanized square pipe

    ASTM A53 A283 A106 A179 A210 galvanized square pipe

    Galvanized square pipes are divided into hot-dip galvanized square pipes and cold-dip galvanized square pipes from the production process. It is precisely because the processing of these two galvanized square tubes is different that they have many different physical and chemical properties. In general, they have many differences in strength, toughness and mechanical properties.
    Hot-dip galvanized square tube: It is a square tube made of steel plate or steel strip crimped and welded. On the basis of this kind of square tube, the square tube is placed in a hot-dip galvanizing bath after a series of chemical reactions. A square tube formed. The production process of hot-dip galvanized square tube is relatively simple, and the production efficiency is very high, and there are many varieties and specifications. This kind of square tube requires very little equipment and funds, and is suitable for the production of small galvanized square tube manufacturers. But in terms of strength, the strength of this steel pipe is much lower than that of seamless square pipes.
    The cold galvanized square tube uses the principle of cold galvanizing on the square tube used to make the square tube have anti-corrosion performance. Different from hot-dip galvanizing, cold-dip galvanizing paint mainly uses electrochemical principles to prevent corrosion. Therefore, it is necessary to ensure that the zinc powder and the steel are in full contact to produce electrode potential differences, so the surface treatment of the steel is very important.
    The difference between hot and cold galvanizing
    Galvanized square pipes are divided into two categories: hot-dip galvanized square pipes and electro-galvanized square pipes. Hot-dip galvanized square pipes include wet method, dry method, lead-zinc method, redox method and so on. The main difference between different hot-dip galvanizing methods is what method is used to activate the surface of the pipe body to improve the quality of galvanizing after the acid immersion cleaning of the steel pipe. Dry method and oxidation-reduction method are mainly used in production, and their characteristics are shown in the table. The surface of the electro-galvanized zinc layer is very smooth and compact, with uniform structure; it has good mechanical properties and corrosion resistance; the zinc consumption is 60% to 75% lower than that of hot-dip galvanizing. Electro-galvanizing has certain technical complexity, but this method must be used for single-sided plating, double-sided plating with different inner and outer surface plating thicknesses, and thin-walled pipe galvanizing.
    Calculation of theoretical weight per meter of galvanized square pipe
    4 * Thickness * (side length-thickness) * 0.00785
    Among them, the side length and wall thickness are in millimeters (mm), and the values ​​are directly substituted into the above formula, and the result is the weight of the square tube per meter, in kilograms.
    For a square tube of 30 x 30 x 2.5 mm, the weight per meter can be calculated according to the above formula: 4 x 2.5 x (30-2.5) x 7.85=275 x 7.85=2158.75 grams, which is about 2.16 kg.
    When the wall thickness and side length are both in millimeters, 4x wall thickness x (side length-wall thickness) is calculated as the volume of a square tube per meter length, in cubic centimeters (cm3), multiplied by the specific gravity of iron 7.85 grams per cubic centimeter, which is the weight of each square tube per meter in kilograms

  • Various thick walled square tubes are customized

    Various thick walled square tubes are customized

    According to the production process, square tubes are divided into hot-rolled seamless square tubes, cold drawn seamless square tubes, extruded seamless square tubes and welded square tubes.

  • Thick walled square pipe manufacturer

    Thick walled square pipe manufacturer

    As the name suggests, square pipe is a kind of square pipe type. Many materials can form square pipe body. It is used for what purpose and where. Most square pipes are steel pipes. 

  • Spot sales of large caliber rectangular tube

    Spot sales of large caliber rectangular tube

    Such as pipelines for transporting oil, natural gas, gas, water and some solid materials. Compared with solid steel such as round steel, steel pipe has the same bending and torsional strength and light weight. It is an economic section steel.

  • A333GR.6  SA210C  ST52 thick wall square pipe quality assurance

    A333GR.6 SA210C ST52 thick wall square pipe quality assurance

    Large diameter thick walled square pipe is a kind of light thick walled steel pipe with hollow square section, also known as steel cold-formed profile. It is a section steel with square section shape and size, which is made of Q235 hot-rolled or cold-rolled strip or coil as the base material, cold bending and high-frequency welding.

  • ST52 A210C A333GR.6 STS49 STPT49 STPL39 square tube manufacturer guarantees quality

    ST52 A210C A333GR.6 STS49 STPT49 STPL39 square tube manufacturer guarantees quality

    According to the production process, square tubes are divided into hot-rolled seamless square tubes, cold drawn seamless square tubes, extruded seamless square tubes and welded square tubes.

  • Quality assurance of large alloy square tube factory

    Quality assurance of large alloy square tube factory

    Seamless square pipe is a square steel pipe with four corners. It is a square steel pipe formed by cold drawing and extrusion of seamless steel pipe. There is an essential difference between seamless square pipe and welded square pipe. Steel pipe has hollow section and is widely used as a pipeline for conveying fluid.

  • A53 A283D GGP ST33 STPY41 square tube with high quality and low price

    A53 A283D GGP ST33 STPY41 square tube with high quality and low price

    Q235 welded square pipe is an appellation of square pipe, that is, steel pipe with the same side length. It is made of rolled strip steel through technological solution. Normally, the strip steel is unpacked, flat, curled and welded to form a round pipe, and then the round pipe is rolled to check the Q235 welded square pipe, and then cut to the required length.

  • High quality stainless steel square tube

    High quality stainless steel square tube

    Stainless steel square tube is a kind of hollow long steel. Because the section is square, it is called square tube. A large number of pipelines are used to transport fluids, such as oil, natural gas, water, gas, steam, etc.

  • Rectangular tubes are widely used

    Rectangular tubes are widely used

    Common materials of welded square pipes are: Q235A, Q235C, Q235B, 16Mn, 20#, Q345, L245, L290, X42, X46, X60, X80, 0Cr13, 1Cr17, 00cr19ni11, 1Cr18Ni9, 0cr18ni11nb, etc.

  • China Precision square tube factory

    China Precision square tube factory

    Stainless steel square tube is a kind of hollow long steel. Because the section is square, it is called square tube.