• High grade seamless steel pipe for petroleum System 1
  • High grade seamless steel pipe for petroleum System 2
High grade seamless steel pipe for petroleum

High grade seamless steel pipe for petroleum

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Loading Port:
Tianjin
Payment Terms:
TT or LC
Min Order Qty:
40 m.t.
Supply Capability:
15000 m.t./month

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1Structure of  High grade seamless steel pipe for petroleum : 

Seamless pipe is formed by drawing a solid billet over a piercing rod to create the hollow shell. As the manufacturing process does not include any welding, seamless pipes are perceived to be stronger and more reliable. Historically seamless pipe was regarded as withstanding pressure better than other types, and was often more easily available than welded pipe.

 

2‍‍Main Features of  High grade seamless steel pipe for petroleum :

• High manufacturing accuracy

• High strength

• Small inertia resistance

• Strong heat dissipation ability

• Good visual effect

• Reasonable price 

 

3 High grade seamless steel pipe for petroleum Specification

Standard

GB, DIN, ASTM

ASTM A106-2006, ASTM A53-2007

Grade

10#-45#, 16Mn

10#, 20#, 45#, 16Mn

Thickness

8 - 33 mm

Section Shape

Round

Outer Diameter

133 - 219 mm

Place of Origin

Shandong, China (Mainland)

Secondary Or Not

Non-secondary

Application

Hydraulic Pipe

Technique

Cold Drawn

Certification

API

Surface Treatment

factory state or painted black

Special Pipe

API Pipe

Alloy Or Not

Non-alloy

Length

5-12M

Outer Diameter

21.3-610mm

Grade 

20#, 45#, Q345, API J55, API K55, API L80, API N80, API P110, A53B

Standard

ASME, ASTM

 

1) Material:20#(ASTM A 106/A53 GRB.API5LGRB,GB),45#,16Mn,10#.

2) Specification range:OD:21.3-610mm,WT:6-70mm,length:6-12m or according to the requirement of clients.

3) Excutive standards:GB,ASME API5L.ASTM A 106/A53,Despite of the above standards,we can also supply seamless steel pipe with standard of DIN,JIS,and so on,and also develop new products according to the requirements of our clients!
4) Surface:black lacquered,varnish coating or galvanized.
5) Ends:Beveled or square cut,plastic capped,painted.
6) Packing:bundles wrapped with strong steel strip,seaworthy packing. 

 

 

4Packaging & Delivery

Packaging Details:

seaworthy package,bundles wrapped with strong steel strip

Delivery Detail:

15-30days after received 30%TT

 

5FAQ of  High grade seamless steel pipe for petroleum :  

How 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.

How 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.

Why 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.

 

6‍‍ High grade seamless steel pipe for petroleum  Images ‍‍

 

Q:What are the different methods of cutting steel pipes?
There are several different methods of cutting steel pipes, including manual methods such as hacksaw or pipe cutter, as well as mechanical methods like band saw, plasma cutting, or laser cutting. Each method has its own advantages and is chosen based on factors such as the thickness of the pipe, precision required, and production volume.
Q:What are the different types of steel pipe reducers?
There are several different types of steel pipe reducers that are commonly used in various industrial applications. These reducers are designed to connect pipes of different sizes, allowing for a smooth transition in the flow of fluids or gases. Here are some of the most common types: 1. Concentric Reducers: These reducers have a symmetrical design with a centerline that aligns with the centerline of both the larger and smaller pipes. They provide a gradual reduction in pipe size, ensuring a smooth flow of material. 2. Eccentric Reducers: Unlike concentric reducers, eccentric reducers have an offset centerline. This design is useful when there is a need to prevent the accumulation of air or gases in the piping system. The eccentric reducer helps to direct any gas or air towards a vent or drain point. 3. Welded Reducers: These reducers are made by welding two pipes of different sizes together. They are commonly used in situations where a permanent connection is required. 4. Seamless Reducers: Seamless reducers are manufactured without any welded joints. They are made from a single piece of steel, which enhances their strength and durability. Seamless reducers are often preferred in applications where leak-proof connections are critical, such as in high-pressure or high-temperature environments. 5. Threaded Reducers: These reducers have male and female threads on either end, allowing for easy installation and removal. They are commonly used in low-pressure applications and are an economical choice for systems that require frequent disassembly. 6. Flanged Reducers: Flanged reducers have flanges on both ends, which are bolted together to create a tight seal. They are often used in piping systems that require easy access for maintenance or inspection. Each type of steel pipe reducer has its own advantages and is selected based on the specific requirements of the application. It is important to consider factors such as the type of fluid or gas being transported, pressure and temperature conditions, and the need for easy installation or maintenance when choosing the appropriate reducer for a particular system.
Q:Can steel pipes be used for transporting drinking water?
Indeed, steel pipes have the capacity to transport drinking water. These pipes are extensively employed in water distribution networks and have a long history of usage. Renowned for their robustness, potency, and ability to resist corrosion, steel pipes are highly favored. Nonetheless, it is imperative to ensure that steel pipes designated for drinking water transportation are adequately coated or lined in order to avert any potential contamination originating from the metal. Moreover, it is crucial to conduct routine inspections and maintenance to safeguard the pipes' integrity and to forestall any leaks or ruptures that could jeopardize the water's quality.
Q:How are steel pipes used in the manufacturing of HVAC systems?
Steel pipes are commonly used in the manufacturing of HVAC systems for various purposes. They are used to transport fluids, such as water or refrigerants, throughout the system. Steel pipes are also used for exhaust systems and ventilation, providing a durable and corrosion-resistant solution. Additionally, steel pipes are used in the construction of HVAC equipment, such as heat exchangers and boilers, due to their strength and ability to withstand high temperatures and pressures. Overall, steel pipes play a crucial role in the efficient and reliable functioning of HVAC systems.
Q:Theoretical weight of 25*25*1.5 square steel tubes
The theoretical weight of 25*25*1.5 square steel tubes is 1.075kg/m.
Q:What are the factors affecting the cost of steel pipes?
The factors affecting the cost of steel pipes include raw material prices, production and manufacturing costs, transportation and logistics expenses, market demand and supply dynamics, import and export tariffs, government regulations, and the overall economic conditions. Additionally, factors such as the grade and quality of steel used, diameter and thickness of the pipes, and any additional features or coatings can also influence the cost.
Q:How are steel pipes protected against external damage?
Steel pipes are protected against external damage through various methods such as coating them with protective materials like polyethylene or epoxy, using cathodic protection techniques, and implementing physical barriers like concrete encasement or pipe sleeves. These measures help prevent corrosion, impact, and abrasion, ensuring the durability and longevity of the steel pipes.
Q:How are steel pipes used in the construction of coal-fired power plants?
Steel pipes are used in the construction of coal-fired power plants for various purposes such as transporting coal and water, circulating fluids, and carrying high-pressure steam. They are commonly used in the boiler and piping systems, including the coal handling system, ash handling system, and cooling water system. Steel pipes provide durability, strength, and resistance to high temperatures and pressures, making them essential components in coal-fired power plant construction.
Q:How do you calculate the pipe pressure drop coefficient for steel pipes?
To calculate the pipe pressure drop coefficient for steel pipes, you can use the Darcy-Weisbach equation. This equation relates the pressure drop in a pipe to various factors such as the flow rate, pipe diameter, pipe length, and the properties of the fluid being transported. The pressure drop coefficient, also known as the friction factor or the Darcy-Weisbach friction factor, is denoted by the symbol f. It is a dimensionless parameter that represents the resistance to flow in the pipe. The value of f depends on the flow regime, which can be laminar or turbulent. For laminar flow, which occurs at low flow rates or with viscous fluids, the pressure drop coefficient can be calculated using the Hagen-Poiseuille equation. This equation relates the pressure drop to the fluid viscosity, pipe length, pipe diameter, and flow rate. However, for turbulent flow, which occurs at higher flow rates, the calculation of the pressure drop coefficient is more complex. It depends on the roughness of the pipe wall, which affects the flow resistance. The roughness is typically quantified using the relative roughness, which is the ratio of the pipe wall roughness to the pipe diameter. To calculate the pressure drop coefficient for turbulent flow in steel pipes, you can use empirical correlations or Moody's diagram. Moody's diagram provides a graphical representation of the friction factor as a function of the Reynolds number and the relative roughness. The Reynolds number represents the flow regime and is calculated using the fluid properties, flow rate, and pipe dimensions. By finding the intersection of the Reynolds number and relative roughness on Moody's diagram, you can determine the corresponding pressure drop coefficient. It's important to note that the pressure drop coefficient for steel pipes may vary depending on the specific pipe dimensions, surface roughness, and fluid properties. Therefore, it is recommended to consult relevant standards or engineering references for accurate and up-to-date values of the pressure drop coefficient for steel pipes in your specific application.

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