Galvanized Square Hot Varieties Complete Tube

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Loading Port:
China main port
Payment Terms:
TT or LC
Min Order Qty:
5 m.t.
Supply Capability:
5000 m.t./month
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Product Description:


Mainly used for curtain wall, construction, machinery manufacturing, shipbuilding, steel construction projects, solar power support, steel structure engineering, power engineering, power plants, agricultural and chemical machinery, glass curtain wall, automobile chassis, airport etc.


Aluminum alloy





square, round, flat, angle ,etc


Anodizing ,Powder coating, Electrophoresis, etc

Deep processing ability

Drill hole ,stretch bending, milling, welding, fabrication, etc


Windows & door , LED panel, heat sink , curtain wall , solar Panel Frame, rail & fence , ladder ,etc.




According to your requirement ,such as shrink wrap, plastic bag, kraft paper ,etc.


15-20days after sample confirmed & down payment.

Loading port

Quanzhou, Xiamen

Shipping term


Payment term

T/T,30% advanced deposit, the balance paid off before loading, or consulting


1,Using our moulds ,no fee

2,Using customer drawing, opening mould, usually over 4tons then the moulds fee can be refunded

3,Mould cost is negotiable base on the order quantity

FAQ of Rectangular Steel Tube

How is the quality of your products?
    Our products are manufactured strictly according to national and internaional standard, and we take a test 
on every pipe before delivered out. If you want see our quality certifications and all kinds of testing report, please just ask us for it.
Guaranteed: If products
quality dont accord to discription as we give or the promise before you place order, we promise 100% refund.

How about price?
    Yes, we are factory and be able to give you lowest price below market one, and we have a policy that
for saving time and absolutely honest business attitude, we quote as lowest as possible for any customer, and discount can be given according to quantity,if you like bargain and factory price is not low enough as you think, just dont waste your time.Please trust the quotation we would give you, it is professional one.

Why should you chose us?
    Chose happens because of quality, then price, We can give you both.Additionally, we can also offer professional products inquiry, products knowledge train(for agents), smooth goods delivery, exellent customer solution proposals.Our service formula: good quality+good price+good service=customer
s trust
SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem.

 If you have any question, pls feel free to contact us !


Rectangular Hot Rolled Steel Tube Image




There are various types of steel pipe fittings used in chemical processing plants, including but not limited to, elbows, tees, reducers, flanges, and couplings. These fittings are designed to connect and control the flow of fluids within the piping system, ensuring safe and efficient operation in industrial settings.
Steel pipes are commonly used in the construction of oil storage tanks as they provide strength, durability, and corrosion resistance. These pipes are used to connect various components of the tank, such as the walls, roof, and bottom, ensuring a secure and leak-proof structure. Additionally, steel pipes are also used to transport oil within the tank and for the installation of necessary fittings, valves, and other equipment.
The environmental impacts of steel pipe production include carbon dioxide emissions from the extraction and processing of raw materials, such as iron ore and coal, as well as the energy-intensive manufacturing process. Additionally, the production of steel pipes can contribute to air and water pollution through the release of pollutants and waste materials. The extraction and transportation of raw materials may also result in habitat destruction and disruptions to ecosystems.
Steel pipes are protected against abrasive wear through various methods such as using protective coatings, lining the pipes with wear-resistant materials, or employing internal or external liners. These measures ensure that the steel pipes can withstand the erosive effects of abrasive materials and extend their lifespan.
No, steel pipes cannot be used for electrical conduits. Electrical conduits need to be made of materials that are non-conductive and provide protection for the electrical wiring. Steel is a conductive material, so it poses a risk of electric shock and can cause interference with the electrical signals.
Steel pipes are tested for leaks using various methods, including hydrostatic testing and ultrasonic testing. In hydrostatic testing, the pipes are filled with water or another suitable fluid and subjected to high pressure to check for any leakage. Ultrasonic testing involves using high-frequency sound waves to detect any defects or leaks in the pipes. These testing methods ensure the integrity and reliability of steel pipes.
Q:How to establish a concrete-filled steel tubular column model in ANSYS?
First, you have to choose at least three or more types of materials. Modeling is a little complicated. Strongly recommended that the landlord to see "ANSYS in civil engineering applications", where there is such an example, you step by step, step by step back, and then in accordance with their own requirements modeling, OK. Wish you success
Q:What is the difference between galvanized iron pipe and galvanized steel pipe? Or called different, in fact, is referred to as galvanized pipe?
Different materials, cast iron, steel seamless steel pipe; the different production process, cast iron is hot metal casting, steel rolling mill of seamless steel tube is through processing, different performance indexes, ductile iron diameter, wall thickness, crisp texture, relatively heavy, can be made of seamless steel pipe diameter is very small, the wall is very thin, good toughness, light. Cast iron, cheap, but the bottom of the strength, can only be used in low pressure occasions.
In order to determine the thermal expansion of steel pipes, it is necessary to utilize the coefficient of thermal expansion (CTE) specific to steel. The CTE represents the extent to which a material expands or contracts in response to temperature fluctuations. Typically, the average value of CTE for steel is around 12 x 10^-6 per degree Celsius (12 μm/m°C). To calculate the thermal expansion of a steel pipe, one must possess knowledge of the pipe's initial length (L0), the temperature change (ΔT), and the CTE for steel. The formula for calculating thermal expansion is as follows: ΔL = L0 * CTE * ΔT In this equation: ΔL denotes the alteration in length of the steel pipe L0 represents the initial length of the steel pipe CTE signifies the coefficient of thermal expansion for steel ΔT indicates the change in temperature For instance, suppose there is a steel pipe with an initial length of 2 meters (L0), and the temperature rises by 50 degrees Celsius (ΔT). The CTE for steel is 12 x 10^-6 per degree Celsius. ΔL = 2m * 12 x 10^-6/°C * 50°C ΔL = 0.00024m/m°C * 50°C ΔL = 0.012m Thus, when the temperature increases by 50 degrees Celsius, the steel pipe will expand by 0.012 meters or 12 millimeters. It is important to bear in mind that this calculation assumes linear expansion, which is applicable for minor temperature variations. However, for larger temperature differences or more intricate pipe systems, a more comprehensive analysis may be necessary to consider factors such as the material properties, geometry, and thermal boundary conditions of the pipes.
Some common pipe fittings used with steel pipes include couplings, elbows, tees, unions, reducers, and caps.

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