Weld Steel Pipe & 18 Inch Steel Pipe from okorder.com

Weld Steel Pipe & 18 Inch Steel Pipe from okorder.com System 1

Weld Steel Pipe & 18 Inch Steel Pipe from okorder.com

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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 Weld Steel Pipe & 18 Inch Steel Pipe Description:

Welded steel pipe are commonly welded by means of bent round, we can weld the steel into square and other shapes and then welded into the surface of the steel pipe seam. Steel plate or steel pipe is used in the blanks of welded steel. We can use electric arc welded pipe, high or low frequency electric resistance welded pipe, gas pipe, stove pipe, Bundy tubes according to different methods.

2、Main Features of the Weld Steel Pipe & 24Inch Steel Pipe：

·Reasonable price
·Relatively light weight
·Optional torsional strength
·Support high pressure
·Resist corrosion

3、The Weld Steel Pipe & 24Inch Steel Pipe Images：

Weld Steel Pipe & 24Inch Steel Pipe from okorder.com

4、The Weld Steel Pipe & 24Inch Steel Pipe Specification：

Standard：	JIS, DIN, ASTM JIS G3445-2006, JIS G3444-2006, JIS G3446-2004, DIN EN 10216-1-2004, DIN EN 10217-1-2005, DIN EN 10305, ASTM A106-2006, ASTM A53-2007, ASTM A789-2001, ASTM A1020-2002, ASTM A179-1990, ASTM A199
Grade：	Cr-Mo alloy, 16Mn, ST35-ST52, STB35-STB42 15CrMo, 10CrMo910, 30CrMo, 16Mn, St37, St52, St42, St45, STB35, STB42
Thickness：	2 - 30 mm
Section Shape：	Round
Outer Diameter：	10 - 568 mm
Secondary or Not：	Non-secondary
Application：	Structure Pipe
Technique：	Hot Rolled
‍‍Certification：	API
Surface Treatment：	Paint
Special Pipe：	API Pipe
Alloy Or Not：	alloy

Specifications

1.W.T from 2mm to 70mm
2.OD from 10 to 568mm
3.product by our own factory

4.on time dilivery

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.

Any question, pls feel free to contact us !

Q: What is the elasticity of steel pipes?: The elasticity of steel pipes refers to their ability to deform under stress and then return to their original shape once the stress is removed. Steel pipes are known for their high elasticity, which allows them to withstand heavy loads and pressure without permanent deformation.

Q: What is the impact of temperature on steel pipes?: The impact of temperature on steel pipes can vary depending on the specific conditions and application. Generally, high temperatures can cause steel pipes to expand, potentially leading to buckling or distortion. On the other hand, extremely low temperatures can make steel pipes more brittle and prone to cracking. It is crucial to consider the temperature range within which the steel pipes will operate to ensure their structural integrity and prevent any potential failures.

Q: What is the creep resistance of steel pipes?: The ability of steel pipes to withstand deformation or elongation over time when exposed to high temperatures and constant stress is referred to as their creep resistance. Steel pipes are highly regarded for their exceptional resistance to creep because of the inherent strength and stability of the material. The creep resistance of steel pipes can vary depending on factors like the composition of the alloy, heat treatment, and the conditions in which they are used. Creep is a phenomenon that occurs at elevated temperatures, causing materials to slowly deform under constant stress. In the case of steel pipes, this can be a concern in applications where they are subjected to high temperatures for extended periods, such as in power plants, industrial furnaces, or steam pipelines. The ability to resist creep deformation is crucial to maintain the structural integrity and longevity of the pipes. Steel pipes are often designed and manufactured using alloys with high creep resistance properties, such as chromium-molybdenum (Cr-Mo) steels or nickel-based alloys. These alloys possess excellent mechanical strength, thermal stability, and resistance to oxidation and corrosion, all of which contribute to their superior creep resistance. Moreover, heat treatment processes like quenching and tempering can significantly enhance the creep resistance of steel pipes. These treatments involve controlled heating and cooling cycles to optimize the microstructure of the steel, thereby increasing its resistance to deformation and improving its overall performance at high temperatures. It is important to note that the creep resistance of steel pipes is typically specified by industry standards and codes, such as the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code. These standards define the allowable stress levels and design criteria for different steel pipe applications, ensuring that they meet the necessary safety and performance standards. In summary, steel pipes are renowned for their excellent creep resistance due to their inherent strength, stability, and ability to withstand high temperatures. The specific creep resistance of steel pipes may vary depending on factors such as alloy composition, heat treatment, and operating conditions. Proper design and adherence to industry standards are essential to ensure the desired creep resistance and overall performance of steel pipes in various applications.

Q: Are steel pipes suitable for potable water applications?: Yes, steel pipes are suitable for potable water applications. Steel pipes are commonly used for transporting water in various industries and municipal water systems. They are known for their durability, strength, and resistance to corrosion, making them a reliable choice for potable water systems. Steel pipes also have the advantage of being able to withstand high pressure and temperature conditions, making them suitable for both hot and cold water applications. Additionally, steel pipes can be easily welded, ensuring leak-free connections. However, it is important to note that the quality of the steel used and proper maintenance are crucial factors in ensuring the safety and suitability of steel pipes for potable water applications. Regular inspection and maintenance should be done to prevent corrosion and ensure the integrity of the pipes.

Q: What are the different types of steel pipe fittings for chemical processing plants?: There are various types of steel pipe fittings commonly used in chemical processing plants, such as elbows, tees, reducers, couplings, flanges, and valves. These fittings are designed to connect and redirect the flow of fluids within the piping system, ensuring efficient and safe operation in chemical processing applications.

Q: How are steel pipes protected against external moisture?: Steel pipes can be safeguarded against external moisture in various ways. One commonly employed method involves applying a protective coating or paint to the pipe's surface, which acts as a barrier to prevent direct contact with moisture. Depending on the specific requirements and environment, this coating can be composed of different materials like epoxy, polyethylene, or zinc. Another means of protection is through the utilization of corrosion inhibitors. These inhibitors are added to either the internal or external surfaces of the pipes, creating a protective layer that hinders moisture-induced corrosion. Chemicals like rust converters or rust preventatives are examples of corrosion inhibitors that react with the steel, forming a protective barrier. Cathodic protection is an additional technique utilized to shield steel pipes from external moisture. This technique involves the use of sacrificial anodes or impressed current to generate an electric current that safeguards the steel. Sacrificial anodes, typically made of zinc, aluminum, or magnesium, are attached to the steel pipes and corrode over time instead of the steel, thereby preventing moisture-induced corrosion. Moreover, proper insulation and waterproofing measures play a vital role in protecting steel pipes from external moisture. To provide an extra layer of protection and prevent moisture infiltration, insulation materials like foam or tape are applied to the pipes. Waterproofing measures such as sealants or membranes can also be implemented to ensure no moisture seeps into the pipes. Regular maintenance, including inspections and repairs, is crucial for ensuring the continuous protection of steel pipes against external moisture. By promptly addressing any areas of damage or corrosion, the integrity of the protective measures can be maintained, thereby extending the lifespan of the steel pipes and avoiding costly repairs or replacements in the future.

Q: What's the difference between a rectangular tube and a rectangular steel tube?: The classification of rectangular tube: steel pipe seamless steel pipe and welded steel pipe (tube) hot-rolled seamless tube, seamless tube, seamless tube, welded tube extrusion. The welded square pipe is divided into two parts:(a) according to the process of arc welding - resistance welding tube, square tube (high frequency and low frequency), welding square tube, welding square tube furnace (b) according to the weld - welded square tube, spiral welded pipe.

Q: How are steel pipes classified based on their diameter?: Various categories exist for classifying steel pipes based on their diameter. The most commonly used classification system for steel pipes is the nominal pipe size (NPS), which is a set of standard sizes in North America that designate the diameter of the pipe. The NPS is expressed in inches and represents the approximate inside diameter (ID) of the pipe. Steel pipes can be divided into three main categories based on their diameter: small bore, medium bore, and large bore. Small bore pipes have an NPS of 2 inches and below, medium bore pipes have an NPS between 2 and 24 inches, and large bore pipes have an NPS greater than 24 inches. In addition to the NPS classification, steel pipes can also be classified based on their actual outside diameter (OD). This classification is used to determine the compatibility of pipes with fittings and other components. The OD classification is typically expressed in inches or millimeters. Overall, the diameter-based classification of steel pipes provides a standardized system that facilitates the easy identification and selection of pipes for various applications. It ensures compatibility and enables the efficient installation and effective functioning of piping systems in industries such as construction, oil and gas, plumbing, and more.

Q: What is the lifespan of steel pipes?: The lifespan of steel pipes can vary depending on various factors such as the quality of the steel used, the environment in which they are installed, and the maintenance and care given to them. However, generally speaking, steel pipes can have a lifespan ranging from 20 to 100 years or even longer if properly maintained and protected against corrosion.

Q: What are the different methods of wrapping steel pipes for corrosion protection?: Corrosion protection for steel pipes can be achieved through various methods, tailored to specific applications and environmental conditions. Some commonly used techniques include: 1. Tape Wrapping: Steel pipes are wrapped with corrosion-resistant tape, like polyethylene or polypropylene tape, to create a barrier between the pipe and corrosive elements. This reduces the risk of direct contact and subsequent corrosion. 2. Inner Wrapping: A protective coating or lining is applied to the inside surface of the steel pipe. This method is commonly employed for pipes transporting fluids or gases, offering an additional layer of protection against internal corrosion. 3. External Coating: A widely utilized technique involves applying a protective coating to the outer surface of the steel pipe. This coating, which can consist of materials like epoxy, polyethylene, or polyurethane, acts as a barrier against corrosive elements, extending the pipe's lifespan. 4. Cathodic Protection: An electrochemical method is utilized to safeguard steel pipes from corrosion. By connecting the steel pipe to a sacrificial anode, such as zinc or magnesium, the anode corrodes instead of the pipe. This diverts corrosive currents away from the pipe, preventing its corrosion. 5. Heat Shrink Sleeve: Heat shrink sleeves are commonly employed for corrosion protection in underground or submerged scenarios. These sleeves, made of heat-activated material, shrink when heated to form a tight seal around the pipe. By preventing direct contact with moisture and corrosive elements, the sleeve effectively acts as a barrier. 6. Fusion Bonded Epoxy (FBE) Coating: FBE coating entails applying a thermosetting powder coating to the steel pipe's surface, which then fuses to create a protective layer. This coating exhibits strong adhesion and corrosion resistance, making it a popular choice for various steel pipe applications. Choosing the appropriate corrosion protection method for steel pipes depends on factors like the environment, specific corrosive elements, intended use, and other requirements. Seeking professional advice and consultation may be necessary to determine the most suitable technique for a particular situation.

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