Carbon Steel Seamless Steel Pipe API 5L High Quality

Carbon Steel Seamless Steel Pipe API 5L High Quality System 1

Carbon Steel Seamless Steel Pipe API 5L High Quality

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Loading Port:: Tianjin

Payment Terms:: TT or LC

Min Order Qty:: 25 m.t.

Supply Capability:: 10000 m.t./month

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Product Description:

1、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.

2、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

3、Square Tube Images:

Square Tube with Low Price in China from okorder.com

Packaging & Delivery

Packaging Details	In Bundles, Varnish coating, Ends can be bevelled or square cut, End capped.
Delivery Details	10 days

4、Square Tube Specification：

Standard	JIS, 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
Thickness	1-50mm
Outer Diameter	1515---8080
Technique	Hot Rolled
Certification	API
Surface Treatment	Copper Coated
Alloy Or Not	Non-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

5、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.

Q: How are steel pipes classified based on their schedule?: Steel pipes are classified based on their schedule, which refers to the thickness of the pipe walls. The schedule classification system includes different numerical values, such as Schedule 10, Schedule 40, and Schedule 80, to categorize pipes with varying wall thicknesses.

Q: What are the different methods of transporting steel pipes?: There are several methods of transporting steel pipes, including by truck, rail, ship, and pipeline. Each method has its advantages and is chosen based on factors such as distance, cost, and accessibility. Trucks are commonly used for shorter distances or when the delivery location is not easily accessible by other means. Rail transport is efficient for long distances and can handle large quantities of steel pipes. Shipping by sea is ideal for international shipments or when the destination is located near a port. Lastly, pipelines are used for transporting steel pipes for oil and gas industries, as they provide a direct and continuous flow.

Q: What are the different coatings used on steel pipes?: There are several different coatings used on steel pipes, including but not limited to, epoxy coatings, fusion bonded epoxy (FBE) coatings, polyethylene coatings, and zinc coatings. These coatings are applied to steel pipes to protect them from corrosion, increase their lifespan, and improve their performance in various environments.

Q: How do you calculate the pipe pressure drop for steel pipes?: To determine the pressure drop in steel pipes, there are two equations that can be utilized: the Darcy-Weisbach equation and the Hazen-Williams equation. The Darcy-Weisbach equation, although more precise, necessitates a greater amount of information. It takes into consideration the diameter, length, roughness, fluid flow rate, as well as fluid properties like viscosity and density. The equation is expressed as: To calculate the pressure drop (ΔP), the following formula can be used: (f * L * ρ * V^2) / (2 * D) In this formula: - ΔP denotes the pressure drop - f represents the friction factor (which can be determined using Moody's chart or empirical equations such as the Colebrook-White equation) - L signifies the length of the pipe - ρ denotes the fluid density - V represents the fluid velocity - D signifies the pipe diameter On the other hand, the Hazen-Williams equation is a simplified version commonly employed for water flow calculations. Although less accurate, it is more user-friendly. The equation is expressed as: To calculate the pressure drop (ΔP), the following formula can be used: K * Q^1.85 / (C^1.85 * d^4.87) In this formula: - ΔP denotes the pressure drop - K signifies the Hazen-Williams coefficient (which relies on the pipe material and roughness) - Q represents the flow rate - C signifies the Hazen-Williams roughness coefficient - d denotes the pipe diameter It is crucial to note that these equations provide estimations of the pressure drop, and actual conditions may vary due to factors such as fittings, bends, and valves in the pipe system. Furthermore, consistency in unit usage (e.g., SI units or US customary units) is of utmost importance when employing these equations.

Q: What is the composition of steel pipes?: Steel pipes are primarily composed of iron and carbon, with trace amounts of other elements such as manganese, phosphorus, sulfur, and silicon.

Q: What is the maximum temperature and pressure that steel pipes can withstand?: The maximum temperature and pressure that steel pipes can handle differ based on the specific grade and type of steel utilized. Nevertheless, steel pipes generally have the ability to withstand high temperatures and pressures due to their robust and long-lasting nature. In applications where high temperatures are involved, like in steam or heat transfer systems, steel pipes can typically endure temperatures up to 1000 degrees Celsius (1832 degrees Fahrenheit) or even higher. It is important to note that the exact temperature limit may fluctuate depending on the steel's alloy composition and heat treatment. In terms of pressure, steel pipes are renowned for their exceptional strength and ability to resist internal and external pressure. The maximum pressure that steel pipes can handle will depend on factors such as pipe diameter, wall thickness, and material strength. In industrial applications, steel pipes can handle pressures ranging from a few hundred psi (pounds per square inch) to several thousand psi. To ensure the safe operation of steel pipes under high temperatures and pressures, it is vital to adhere to industry standards and guidelines, as well as conduct regular inspections and maintenance. Seeking advice from engineers and professionals experienced in steel pipe systems can provide more specific information regarding the maximum temperature and pressure limits for a particular steel pipe application.

Q: What's the difference between steel pipe and pipe fittings?: Pipe classification: steel pipe seamless steel pipe and welded steel pipe (tube) two categories. It can be divided into round tube and special-shaped tube according to the sectional shape. The round steel tube is widely used, but there are some special-shaped steel tubes such as square, rectangle, semicircle, hexagon, equilateral triangle and octagon.

Q: How are steel pipes used in the construction of oil-fired power plants?: Steel pipes are primarily used in the construction of oil-fired power plants for transporting oil and gas, as well as for the construction of boilers and other high-pressure equipment. These pipes are durable, resistant to corrosion, and can withstand high temperatures and pressures, making them suitable for the harsh conditions and demands of power plant operations.

Q: Are steel pipes suitable for high-temperature applications?: Yes, steel pipes are suitable for high-temperature applications. Steel has excellent heat resistance properties and can withstand high temperatures without deformation or structural failure. Additionally, steel pipes can be specifically designed and coated to enhance their heat resistance, making them ideal for various industrial processes and applications involving high temperatures.

Q: Can steel pipes be used for underground fuel storage systems?: Steel pipes are an excellent choice for underground fuel storage systems. Due to their strength, durability, and resistance to corrosion, they are widely used in this application. By opting for steel pipes, one can rely on a secure and long-lasting solution for underground fuel storage. These pipes are capable of withstanding the pressure and weight of the fuel, making them suitable for this purpose. Moreover, their easy weldability and interconnectivity provide flexibility in designing and constructing such systems. However, it is crucial to ensure that the steel pipes used in underground fuel storage systems are properly coated or lined to prevent corrosion and protect the fuel from contamination. Regular inspections and maintenance play a vital role in identifying and addressing any potential issues that may arise.

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