Seamless Steel Pipe for Petroleum Cracking Multipurpose Hot

Seamless Steel Pipe for Petroleum Cracking Multipurpose Hot System 1

Seamless Steel Pipe for Petroleum Cracking Multipurpose Hot

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Loading Port:: China main port

Payment Terms:: TT or LC

Min Order Qty:: 10 m.t.

Supply Capability:: 4500 m.t./month

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Product Description:

Standard：
GB9948 Chinese national standard
Application：
Served as for furnace tubes，heat exchange tubes and pipelines in petroleum and refinery plants
Model No．of major steel tubes：
1n 9n 1Er!rMn 1rhMn 1f：hM0 etC

Diamensional tolerances:

Types of steel tubes	Outer diameter		Wall thickness
Cold-rolled tubes	Tube sizes(mm)	Tolerances(mm)	Tube sizes (mm)	Tolerances(mm)
	＞30～50	±0.3	≤30	±10％
	＞50～219	±0.8％	≤30	±10％
Hot-rolled tubes	＞219	±1.0％	＞20	±10％

Mechanical properties：

Standard codes	Models of steel tubes	抗拉强度（MPa）	屈服强度（MPa）	伸长率（％）	冲击功（J）	布氏硬度（HB）	交货状态
GB9948	10	330～490	≥205	≥24	/	/	正火
	20	410～550	≥245	≥21	≥39	/	正火
	15CrMo	440～640	≥235	≥21	≥47	≤170	正火加回火
	1Cr2Mo	≥390	≥175	≥22	≥92	≤179	正火加回火
	1Cr5Mo	≥390	≥195	≥22	≥92	≤187	退火

Chemical composition:

Standard codes	Models of steel tubes	Chemical compositions（％）
Standard codes	Models of steel tubes	C	Si	Mn	P	S	Cr	Mo	Ni
GB9948	10	0.07～0.14	0.17～0.37	0.35～0.65	≤0.035	≤0.035	≤0.15	/	≤0.25
	20	0.17～0.24	0.17～0.37	0.35～0.65	≤0.035	≤0.035	≤0.25	/	≤0.25
	15CrMo	0.12～0.18	0.17～0.37	0.40～0.70	≤0.035	≤0.035	0.80～1.10	0.40～0.55	≤0.30
	1Cr2Mo	≤0.15	0.50～1.00	0.30～0.60	≤0.035	≤0.030	2.15～2.85	0.45～0.65	/
	1Cr5Mo	≤0.15	≤0.50	≤0.60	≤0.035	≤0.030	4.00～6.00	0.45～0.60	≤0.60

FAQ of Seamless Pipe :

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 !

Seamless Pipe Images：

Seamless Steel Pipe for Petroleum Cracking Multipurpose Hot

Q: What is the typical diameter range for steel pipes?: The typical diameter range for steel pipes varies, but it typically falls between 1/2 inch to 48 inches.

Q: How to calculate the maximum bending stress of steel pipe? Is there a list of the maximum flexural normal stresses for steel pipes of different materials and diameters?: Wnx - net sectional modulus of steel tubes, also called net sectional resistance moment. If the section is not weakened, it can be found in the steel sheet of the steel structure design manual. If the section is weakened, it can be calculated by the formula according to the sectional dimension according to the formula of the material mechanics.

Q: What are the different coating materials used for steel pipes?: There are several different coating materials used for steel pipes, including epoxy, polyethylene, polyurethane, and zinc. These coatings are applied to the exterior of the pipes to provide protection against corrosion, abrasion, and other environmental factors. Each coating material has its own specific characteristics and is chosen based on the intended application and the level of protection required.

Q: What are the alternatives to steel pipes for various applications?: Some alternatives to steel pipes for various applications include PVC (polyvinyl chloride) pipes, copper pipes, aluminum pipes, and fiberglass pipes. Each alternative has its own advantages and disadvantages, such as cost, durability, and resistance to corrosion, which make them suitable for specific applications.

Q: How are steel pipes insulated?: Steel pipes are typically insulated using various methods such as applying insulation materials like fiberglass, mineral wool, or foam directly onto the surface of the pipes. This insulation helps to prevent heat loss, control condensation, and protect against corrosion. Additionally, some pipes may also be wrapped with reflective foil or jacketed with a protective covering to enhance insulation efficiency and durability.

Q: What are the common sizes of steel pipe fittings?: The common sizes of steel pipe fittings can vary depending on the specific application and industry standards. However, there are several standard sizes that are commonly used across different industries. These sizes range from ¼ inch to 48 inches in diameter. Some of the most common sizes include ½ inch, ¾ inch, 1 inch, 1 ¼ inch, 1 ½ inch, 2 inch, 2 ½ inch, 3 inch, 4 inch, 6 inch, 8 inch, 10 inch, 12 inch, 14 inch, 16 inch, 18 inch, 20 inch, 24 inch, 30 inch, 36 inch, 42 inch, and 48 inch. These sizes are often available in various lengths to accommodate different installation requirements. It is important to consult industry standards and specifications to determine the appropriate size of steel pipe fittings for a specific project.

Q: What are the factors to consider when selecting the right steel pipe for a specific application?: There are several factors to consider when choosing the appropriate steel pipe for a particular application. These factors encompass: 1. Compatibility with materials: Ensuring that the steel pipe is compatible with the substance it will transport or contain is crucial. Different materials may necessitate specific types of steel pipes to prevent corrosion or contamination. 2. Pressure and temperature requirements: The pressure and temperature conditions that the steel pipe will face should be taken into account. This will determine the necessary thickness and strength of the pipe to ensure it can withstand the intended operating conditions. 3. Size and dimensions: Selecting the size and dimensions of the steel pipe should be based on the flow rate, volume, and available installation space. It is vital to choose a pipe with the appropriate diameter and wall thickness to prevent flow restrictions or leaks. 4. Environmental conditions: The environment in which the steel pipe will be installed must be considered. Factors such as exposure to moisture, chemicals, or extreme temperatures may necessitate the use of specific coatings or materials to enhance the longevity and durability of the pipe. 5. Cost considerations: The cost of the steel pipe and its installation should be taken into account. Striking a balance between desired quality and available budget is essential to ensure the most cost-effective solution. 6. Regulatory compliance: Depending on the application, there may be specific industry regulations or standards that must be adhered to. Choosing a steel pipe that meets these requirements is important to ensure compliance and avoid any legal or safety issues. 7. Maintenance and lifespan: The maintenance requirements and expected lifespan of the steel pipe should also be considered. Some applications may require regular inspections or replacements, while others may require a more durable and long-lasting pipe. By carefully considering these factors, it is possible to select the appropriate steel pipe for a specific application that meets the desired performance, durability, and safety requirements.

Q: What are the different types of steel pipe coatings for chemical processing plants?: There are several types of steel pipe coatings commonly used in chemical processing plants. These include fusion bonded epoxy (FBE) coatings, polyethylene (PE) coatings, polyurethane (PU) coatings, and solvent-based coatings. Each coating offers unique properties and advantages, such as corrosion resistance, chemical resistance, and abrasion resistance, to protect the steel pipes from the harsh environment and chemicals present in chemical processing plants.

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: Is it good to buy a simple wardrobe or a steel pipe?: Natural nobility, if the quality and the degree of firmness, is the simple steel cloth cabinet is the best. However, because the texture of wood wardrobe, solid wood wood may be used after deformation.

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