Many varieties of practical welding steel pipe

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 20 m.t.

Supply Capability:: 5000 m.t./month

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LSAW Steel Pipe

1 Size: 219-3200 mm*5-25.4mm
2 Material Q235/Q345/20#/X42-X65/J55 etc

Standard:
EN-10208-1/2, GB9711.1/2 etc.

Steel Grade:
B, X42 up to X70; L245, L290 up to L48

Usage:
Used for Steel Structure

Size:
LSAW from 219.1mm to 3200mm, thickness from 5mm to 25.4mm
Ends: Beveled ends with protector

Surface:
Bare / Varnish coating / FBE, 3PE coating DIN30670 / or by client option

Packing:
Casing, bundled shipping in containers or by break bulk vessel

Process	Longitudinal Submerged- Arc Welded Steel Pipe (DSAW -Double Submerged arc welded)
Usage	Used for liquid delivery, such as water, gas, and oil; construction and piling
Standard	API 5L(PSL1,PSL2), ASTM A252,EN10217, EN10219,KS F4602, KS D3583, BS, JIS, IS
Certificate	ISO 9001:2008, ISO 14001, ISO 18001, API 5L (PSL1, PSL2),EN10217, EN10219 and so on.
Outside Diameter	323.9 mm-2134 mm (12"-84")
Wall Thickness	6 mm - 80mm
Length	6 – 14 m
Grade	API 5L: GR A, GR B, X42,X46, X56, X60,X65,X70 ASTM A252 GR 1, GR 2, GR 3 EN 10219: S275, S275JR, S355JRH, S355J2H EN 10224, L235,L275,L355
Surface	Fusion bond Epoxy coating, Coal Tar Epoxy, 3PE, Varnish Coating, Bitumen Coating, Black Oil coating as per customer’s requirement
Test	Chemical Component Analysis, Mechanical Properties (Tensile strength, Yield strength, Elongation), Hydrostatic Test, X-ray Test,Size Inspection.
Mill Test Certificate	Mill Test Certificate:EN 10204/3.1B

Q: Can steel pipes be used for oil and gas well production?: Yes, steel pipes can be used for oil and gas well production. Steel pipes are commonly used in the oil and gas industry due to their strength, durability, and resistance to corrosion. They are able to withstand high pressure and extreme temperatures, making them suitable for transporting and extracting oil and gas from wells.

Q: DN80 seamless steel tube, what is the standard thickness?: Generally speaking, the diameter of the pipe can be divided into outer diameter, inner diameter and nominal diameter. Tubes are made of seamless steel tubes. The outer diameter of the tubes is indicated by the letter D, followed by additional outer diameter dimensions and wall thicknesses such as seamless steel tubes with an outer diameter of 108.

Q: What's the difference between round and round tubes?: Round steel is a medium solid steel, of course the tube is hollow

Q: What are the different methods of pressure testing steel pipes?: There are several different methods of pressure testing steel pipes, including hydrostatic testing, pneumatic testing, and ultrasonic testing. Hydrostatic testing involves filling the pipe with water and pressurizing it to a specified level to check for leaks or weaknesses. Pneumatic testing is similar but uses compressed air or gas instead of water. Ultrasonic testing involves using high-frequency sound waves to detect any defects or flaws in the pipe. Each method has its own advantages and is chosen based on the specific requirements and industry standards.

Q: How long do steel pipes typically last?: Steel pipes typically have a lifespan of 50 to 100 years, depending on various factors such as the quality of the steel, installation conditions, maintenance, and exposure to corrosive elements.

Q: Can steel pipes be used for underground fuel pipelines?: Indeed, underground fuel pipelines can utilize steel pipes for their construction. Steel pipes are widely favored for different pipeline applications owing to their exceptional durability, strength, and resistance to corrosion. In the case of underground fuel pipelines, steel pipes are particularly sought-after due to their capacity to endure significant pressure and fluctuations in temperature. Moreover, by shielding against external factors like soil shifts and chemical reactions, steel pipes offer exceptional safeguarding to the fuel transportation system, ensuring its safety and integrity. Through appropriate insulation and coating, the corrosion resistance of steel pipes can be further enhanced, solidifying their dependability as a choice for underground fuel pipelines.

Q: How are steel pipes used in the manufacturing of food processing machinery and equipment?: Due to their numerous advantageous properties, steel pipes are essential in the manufacturing of food processing machinery and equipment. They are widely used in the food industry for their durability, ability to withstand high temperatures and pressures, and resistance to corrosion. The primary use of steel pipes in food processing machinery is for transporting fluids and gases. These pipes are responsible for carrying water, steam, liquids, air, and gases throughout the processing plant. By utilizing steel pipes, the food industry can ensure the reliable and hygienic transfer of these substances, maintaining the quality and safety of food products. Steel pipes also play a crucial role in the design and construction of food processing equipment such as mixers, blenders, conveyors, and canning machines. These machines require pipes to facilitate the movement of ingredients, processing fluids, and cleaning agents. Steel pipes, with their high strength, can handle the heavy loads and pressures associated with food processing operations, making them an ideal choice for such applications. Another significant benefit of steel pipes in food processing machinery is their resistance to corrosion. With the use of various acidic and alkaline substances, as well as hot water and steam, corrosion can occur in other materials. However, steel pipes, especially those made from stainless steel, exhibit a high resistance to corrosion. This ensures that the machinery remains in optimal condition, prolonging its lifespan. Furthermore, the smooth internal surface of steel pipes allows for efficient and hygienic cleaning. This minimizes the accumulation of food particles and contaminants, which is crucial in the food industry. By maintaining high levels of cleanliness, the growth of bacteria can be prevented, ensuring food safety. In conclusion, steel pipes are indispensable in the manufacturing of food processing machinery and equipment. Their durability, resistance to corrosion, ability to handle high temperatures and pressures, and hygienic characteristics make them the ideal choice for transporting fluids and gases, as well as constructing various food processing equipment.

Q: How do you calculate the stress in a steel pipe?: To calculate the stress in a steel pipe, you need to consider the material properties of the steel and the external forces acting on the pipe. The stress in a pipe is typically calculated using the formula: Stress = Force / Area First, you need to determine the force acting on the pipe. This could be due to external loads such as pressure, weight, or mechanical forces. You can calculate the force by multiplying the pressure or weight by the surface area on which it acts. For example, if the pipe is subjected to an internal pressure, you can calculate the force using the formula: Force = Pressure x Area Next, you need to determine the cross-sectional area of the pipe. The cross-sectional area of a circular pipe can be calculated using the formula: Area = π x (Diameter / 2)^2 Once you have determined the force and the area, you can calculate the stress by dividing the force by the area. This will give you the stress value in units such as pounds per square inch (psi) or newtons per square meter (Pa). It is important to note that the stress calculation assumes that the pipe is in a state of equilibrium and that the material properties of the steel are known. The material properties, such as yield strength and ultimate tensile strength, are used to ensure that the stress calculated does not exceed the maximum capacity of the steel.

Q: Can steel pipes be used for stormwater management systems?: Yes, steel pipes can be used for stormwater management systems. Steel pipes are commonly used in stormwater management systems for their durability, strength, and resistance to corrosion. They can efficiently transport stormwater runoff, helping to manage and control its flow. Additionally, steel pipes can be customized to meet specific project requirements, making them a versatile choice for stormwater management systems.

Q: What are the factors to consider while selecting steel pipes for a project?: When selecting steel pipes for a project, there are several important factors to consider. These factors include the material composition of the steel, the pipe dimensions, the intended application, the environmental conditions, and the budget. 1. Material Composition: The material composition of the steel pipes is crucial as it determines the pipes' strength, corrosion resistance, and durability. Common types of steel used for pipes include carbon steel, stainless steel, and alloy steel. Each type has its own set of properties and is suitable for different applications. 2. Pipe Dimensions: The dimensions of the steel pipes, such as diameter and wall thickness, should be carefully considered. The pipe dimensions must be compatible with the project requirements and the system in which the pipes will be installed. It is essential to ensure that the selected pipes can handle the required flow rates and pressures. 3. Intended Application: The specific application of the steel pipes should be thoroughly assessed. Different projects may require pipes with varying characteristics, such as heat resistance, pressure resistance, or the ability to transport specific substances like gas, oil, or water. Understanding the application requirements will help in choosing the appropriate type of steel pipes. 4. Environmental Conditions: The environmental conditions in which the pipes will be installed must be evaluated. Factors such as temperature variations, exposure to moisture, corrosive substances, and external pressures should be taken into account. For instance, if the project involves underground installation or exposure to corrosive chemicals, corrosion-resistant steel pipes may be necessary. 5. Budget: The budget available for the project is also an important factor to consider. The cost of steel pipes can vary depending on their material composition, dimensions, and additional features. It is crucial to strike a balance between the project requirements and the available budget to ensure cost-effectiveness without compromising the quality and performance of the pipes. In conclusion, when selecting steel pipes for a project, it is important to consider factors such as the material composition, pipe dimensions, intended application, environmental conditions, and budget. By carefully evaluating these factors, one can choose the most suitable steel pipes that meet the project requirements and ensure long-term performance and durability.

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