• Square Tube with Low Price in China from okorder.com System 1
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Square Tube with Low Price in China from okorder.com

Square Tube with Low Price in China from okorder.com

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Loading Port:
Tianjin
Payment Terms:
TT or LC
Min Order Qty:
25 m.t.
Supply Capability:
20000 m.t./month

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SIMPLE DESCRIPTION:

Square pipe/rectangular pipe
O.Dsquare:15*15--500*500mm
W.T0.5mm-13mm
Length5.8-12m or according to customers' demand.
Surface TreatmentBlack finished /Galvanized/ Anticorrosion
International StandardISO 9000: 2008

Standard

GB/T6725, GB/T3094, ASTM A500, EN10210  and so on

Material

Q195/Q235/Q345, ST52-3,S235,S355 ect

Technique

Welded(electric resistance welding)

Packing

In bundles or according to customers' demand.

Usage

For construction and so on.

Place of Origin

Tianjin, China

Alloy or not

Non-alloy

 

A. Structure of Square Tube Description: 

    The square tubes are used in structural projects, shelves, racks, trailers and in ornamental purpose. The framework made by square steel tubes, is used for providing support to the roof. This framework is also used as roof top ventilation baffles. With compare to round steel tubes, square steel tubes are little more efficient. The reason is that the square column is more efficient than the solid circular column.



B. Main Features of the Square Tube: 

high quality and low peice 
quick delievry 
in stock 
produced by own factory 
authentication:CANS CNAB IAF PAC CEC 



C. Square Tube Images:



Packaging & Delivery

Packaging DetailsIn Bundles, Varnish coating, Ends can be bevelled or square cut, End capped.
Delivery Details10 days 


D. Square Tube Specification:

  • StandardJIS, GB, DIN, ASTM
    JIS G3445-2006, JIS G3444-2006, JIS G3446-2004, JIS G3441, GB/T 8163-1999, GB/T 8162-1999, DIN EN 10216-1-2004, DIN EN 10217-1-2005, DIN EN 10305, ASTM A106-2006, ASTM A53-2007, ASTM A789-2001, ANSI A213-2001, ASTM A179-1990
    Grade 10#-45#, Cr-Mo alloy, Mo, Q195-Q345, CrNi alloy
    10#, 20#, 45#, 15CrMo, 12CrMo, 13CrMo44, 12CrMo195, 16Mo, 16mo3, Q235, Q345, Q195, Q215, Cr17Ni8, 1Cr13Mn9Ni1N
    Thickness1-50mm
    Outer Diameter15*15---80*80
    TechniqueHot Rolled
    CertificationAPI
    Surface TreatmentCopper Coated
    Alloy Or NotNon-alloy


standard: ASTM JIS DIN GB 
size: O.D: 10*10——50*50 mm
          W.T: 1-50 mm

length: 6-12m or as request

packing: paint,bundles or for the clients’ needs


E. FAQ of Square Tube: 
①How 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 don’t accord to discription as we give or the promise before you place order, we promise 100% refund.


②How 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 don’t waste your time.Please trust the quotation we would give you, it is professional one.

③Why 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.

Any question, pls feel free to contact us !

Q: What is the theoretical weight per square meter of the steel pipe diameter of the outer frame and the thickness of the tube wall 3mm 48mm?
Dimensions of ordinary steel tubes (taken from GB/T 17395-1998)The theory of weight / (kg/m) | wall thickness (2.9 3.0mm: 3.33)
Q: What does "steel pipe SC" mean?
DN100 and "SCH80" refer to the outer diameter and the wall thickness of the steel pipe;
Q: Can steel pipes be used for underground fuel pipelines?
Yes, steel pipes can be used for underground fuel pipelines. Steel pipes are commonly used for various types of pipelines due to their durability, strength, and resistance to corrosion. When it comes to underground fuel pipelines, steel pipes are a popular choice due to their ability to withstand high pressure and temperature fluctuations. Additionally, steel pipes provide excellent protection against external elements, such as soil movement or chemical reactions, ensuring the safety and integrity of the fuel transportation system. Proper insulation and coating can further enhance the corrosion resistance of steel pipes, making them a reliable option for underground fuel pipelines.
Q: What are the industries that commonly use steel pipes?
Some of the industries that commonly use steel pipes include construction, oil and gas, manufacturing, transportation, and infrastructure.
Q: What are the different types of fittings used with steel pipes?
There are several types of fittings used with steel pipes, including elbow fittings, tee fittings, coupling fittings, union fittings, and flange fittings.
Q: How are steel pipes used in railway infrastructure?
Steel pipes are used in railway infrastructure for various purposes such as constructing bridges, tunnels, and track supports. They are also used for drainage systems, signaling and telecommunication cables, and as conduits for electrical wiring.
Q: How are steel pipes used in the construction of oil refineries?
Steel pipes are extensively used in the construction of oil refineries for various purposes. They are primarily used for transporting crude oil, refined petroleum products, and various chemicals within the refinery complex. Steel pipes are also utilized for the distribution of water, steam, and other fluids required for the refining processes. Additionally, they are employed in the construction of equipment such as heat exchangers, reactors, and storage tanks, where they provide structural support and ensure efficient fluid flow. Overall, steel pipes play a critical role in the reliable and safe operation of oil refineries.
Q: What are the common methods for inspecting the condition of steel pipes?
There are several common methods for inspecting the condition of steel pipes. These methods aim to identify any defects or potential issues that could affect the integrity of the pipes. 1. Visual Inspection: This involves a thorough visual examination of the pipes to identify any visible signs of damage such as corrosion, cracks, or leaks. Inspectors may use tools such as flashlights, mirrors, or borescopes to access hard-to-reach areas. 2. Ultrasonic Testing: This method uses high-frequency sound waves to detect defects within the steel pipes. A transducer is used to emit sound waves, and any disruptions or reflections in the waves can indicate potential issues such as cracks or thinning of the pipe walls. 3. Magnetic Particle Testing: This technique is primarily used to detect surface cracks or defects in steel pipes. A magnetic field is applied to the pipe, and fine iron particles are then applied to the surface. The particles will gather at any areas where there are surface defects, making them easily visible. 4. Eddy Current Testing: This non-destructive testing method is used to detect surface and near-surface defects in steel pipes. It involves passing an alternating current through a coil, which induces eddy currents in the pipe. Any disruptions or changes in the eddy currents can indicate defects such as corrosion or cracks. 5. Radiographic Testing: This method uses X-rays or gamma rays to inspect the internal structure of steel pipes. X-ray film or a digital detector is placed on one side of the pipe, while the X-ray source is placed on the other side. The rays penetrate the steel, and any irregularities or defects can be identified on the film or through digital imaging. 6. Dye Penetrant Inspection: This technique is used to detect surface-breaking defects in steel pipes. A dye penetrant is applied to the surface of the pipe, and after a specified period, a developer is used to draw out the dye from any defects. The dye will make the defects easily visible. These methods, either individually or in combination, provide a comprehensive inspection of steel pipes, ensuring their reliability and safety in various industries such as oil and gas, construction, and manufacturing.
Q: What are the different types of expansion joints used with steel pipes?
There are several types of expansion joints used with steel pipes, including bellows expansion joints, universal expansion joints, hinged expansion joints, and gimbal expansion joints. These expansion joints are designed to accommodate the movement and thermal expansion of steel pipes, ensuring their integrity and preventing damage.
Q: Are steel pipes suitable for use in mining applications?
Yes, steel pipes are suitable for use in mining applications. They are highly durable, resistant to corrosion, and can withstand high pressure and extreme temperatures often encountered in mining operations. Additionally, steel pipes have excellent structural integrity and can be easily welded, making them ideal for various mining activities such as transporting fluids, ventilation systems, and underground infrastructure.

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