CARBON SEAMLESS STEEL PIPES FROM CNBM WITH BEST QUALITY

CARBON SEAMLESS STEEL PIPES FROM CNBM WITH BEST QUALITY System 1

CARBON SEAMLESS STEEL PIPES FROM CNBM WITH BEST QUALITY System 2

CARBON SEAMLESS STEEL PIPES FROM CNBM WITH BEST QUALITY

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 50 m.t.

Supply Capability:: 500 m.t./month

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3、The Steel Pipe Q345 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, Mo, ST35-ST52, Q195-Q345, CrNi alloy 15CrMo, 10CrMo910, 30CrMo, 15Mo3, 16Mo, St37, St52, St42, St45, Q235, Q345, Q195, Q215, Cr17Ni8, 1Cr13Mn9Ni1N
Thickness	2 - 50 mm
Section Shape	Round
Outer Diameter	10 - 900 mm
Secondary Or Not	Non-secondary
Application	Structure Pipe
Technique	EFW
Certification	API
‍‍Surface Treatment	Paint
Special Pipe	API Pipe
Alloy Or Not	Non-alloy

Specifications

1.W.T from 2mm to 70mm
2.OD from 10 to 1200mm
3.product by our own factory
4.on time dilivery

4,Steel Pipe Q345 Images：

CARBON SEAMLESS STEEL PIPES FROM CNBM WITH BEST QUALITY

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:How do you determine the maximum allowable stress for steel pipes?: In order to establish the maximum allowable stress for steel pipes, several factors must be taken into account. These factors encompass the type of steel, the dimensions of the pipe, and the operating conditions it will be exposed to. To begin with, the type of steel chosen is a pivotal aspect in determining the maximum allowable stress. Different steel grades possess distinct mechanical properties, including yield strength, tensile strength, and elongation. These properties define the steel's capacity to withstand stress before deforming or failing. Hence, it is crucial to comprehend the specific grade of steel employed in the pipes to ascertain the maximum allowable stress. Additionally, the dimensions of the pipe are of utmost importance. The external diameter, wall thickness, and length all impact the pipe's strength and ability to handle stress. By calculating the cross-sectional area and moment of inertia, engineers can evaluate the pipe's resistance to bending and axial stresses. These calculations, combined with the material properties, facilitate the determination of the maximum allowable stress. Finally, the operating conditions under which the pipe will be utilized play a critical role. Variables such as temperature, pressure, and the presence of corrosive substances can significantly influence the maximum allowable stress of a steel pipe. Elevated temperatures can alter the mechanical properties of the steel, while high pressures can induce additional stress. Furthermore, the presence of corrosive substances can lead to material degradation and diminish the pipe's strength. Thus, considering these operational factors is essential when determining the maximum allowable stress. To summarize, the process of establishing the maximum allowable stress for steel pipes entails assessing the specific steel grade, the pipe's dimensions, and the operating conditions. By analyzing these factors, engineers can ensure that the steel pipe is designed and utilized within its safe stress limits.

Q:How do you determine the pipe schedule for steel pipes?: Several factors, including pressure rating, wall thickness, and outer diameter, are taken into account to determine the pipe schedule for steel pipes. The pipe schedule serves as a standardized system that classifies the thickness of pipe walls, ensuring compatibility and safety in various applications. To ascertain the pipe schedule for steel pipes, one must consider the maximum pressure the pipe will endure, typically measured in pounds per square inch (psi) or bars. The pressure rating indicates the pipe's ability to withstand pressure without experiencing failure or leakage. Higher pressure ratings necessitate thicker pipe walls. Another crucial factor in determining the pipe schedule is the wall thickness, typically expressed in inches or millimeters. The wall thickness directly correlates with the pressure rating, as thicker walls have the capacity to handle higher pressures. The American National Standards Institute (ANSI) has established a set of standardized wall thicknesses for steel pipes known as the "pipe schedule." The outer diameter of the pipe is also taken into consideration when determining the pipe schedule. The specific application and requirements influence the outer diameter variation. Selecting a pipe with the appropriate outer diameter is essential to ensure proper fit and compatibility with fittings, valves, and other components. In conclusion, the pipe schedule for steel pipes is determined by examining the maximum pressure, wall thickness, and outer diameter. By aligning these factors with the suitable pipe schedule, one can guarantee that the steel pipe is appropriate for its intended usage and capable of withstanding the required pressure.

Q:Are steel pipes suitable for desalination plants?: Desalination plants can benefit greatly from the use of steel pipes. These pipes possess a variety of advantages that make them an ideal option for such facilities. Firstly, their resistance to corrosion is of utmost importance in desalination plants, where saltwater can be highly corrosive. The fact that steel pipes can withstand such corrosive conditions ensures the durability and longevity of the infrastructure, ultimately reducing maintenance and replacement expenses. Secondly, steel pipes exhibit remarkable strength, enabling them to withstand high-pressure situations commonly encountered in desalination plants. The ability of steel pipes to handle intense water flow without deformation or leakage guarantees the efficient and dependable operation of the desalination process. Moreover, steel pipes boast excellent heat resistance properties, rendering them suitable for desalination plants that engage in heat-intensive procedures like distillation or reverse osmosis. These pipes can endure high temperatures without suffering any structural damage, ensuring the secure and efficient transfer of heated water or steam. Furthermore, steel pipes are readily available and come in a wide range of sizes and specifications, allowing for flexibility in the design and construction of desalination plants. This availability and versatility make steel pipes a cost-effective choice for desalination projects. Overall, due to their resistance to corrosion, high strength, heat resistance, availability, and cost-effectiveness, steel pipes are highly suitable for desalination plants and are extensively used in the industry.

Q:How are steel pipes repaired if they are damaged?: Steel pipes can be repaired if they are damaged by various methods such as welding, pipe lining, or using repair clamps. The chosen repair method depends on the extent and type of damage to the pipe.

Q:What steel pipes are buried for outdoor heating pipes? Seamless or welded tube? Are there any rules for specific countries? Can use the seamed tube?: Where outdoor heating pipes are buried, what steel pipe shall be referenced by the 11.1.2 code for installation of outdoor piping?:This chapter applies to the quality inspection and acceptance of the outdoor heating pipe network installation of the plant and the civil building group (residential area) with the saturation steam pressure not greater than 0.7MPa, and the hot water temperature not exceeding 130 degrees celsius.

Q:Can steel pipes be used for transporting gases and liquids?: Yes, steel pipes can be used for transporting both gases and liquids. Steel pipes are highly durable, corrosion-resistant, and have excellent strength, making them suitable for various applications, including oil and gas pipelines, water supply systems, and industrial processes.

Q:How are steel pipes used in the construction of offshore oil rigs?: Steel pipes are commonly used in the construction of offshore oil rigs for various purposes. They are primarily utilized for drilling operations, transporting oil and gas from the seabed to the surface, and for the installation of pipelines and risers. These pipes are known for their strength, durability, and ability to withstand harsh offshore environments, making them an essential component in ensuring the safe and efficient extraction of oil and gas from deep-sea reserves.

Q:Are steel pipes suitable for oil and petroleum applications?: Due to their exceptional strength, durability, and resistance to corrosion, steel pipes find extensive use in oil and petroleum applications. With the ability to endure high pressure and extreme temperatures, these pipes are ideal for the long-distance transportation of oil and petroleum. Moreover, steel pipes possess the added advantage of being able to withstand impact and vibrations, both prevalent in the oil and petroleum industry. Furthermore, their ease of welding and connecting facilitates efficient and cost-effective installation. In summary, steel pipes are the favored option for oil and petroleum applications, guaranteeing the secure and efficient conveyance of these valuable resources.

Q:What are the factors that affect the price of steel pipes?: There are several factors that can affect the price of steel pipes. Some of the key factors include the cost of raw materials such as iron ore and steel scrap, market demand and supply dynamics, production and transportation costs, tariffs and trade policies, currency exchange rates, and overall economic conditions. Additionally, factors like technological advancements, environmental regulations, and changes in industry standards can also impact the pricing of steel pipes.

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