large diameter JOCE LSAW Steel Pipe with Low Carbon

large diameter JOCE LSAW Steel Pipe with Low Carbon

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 5 m.t.

Supply Capability:: 2000 m.t./month

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Product Name	ERW Pipe / Welded Pipe / Black Pipe/LSAW
Size	OD	406-1522.4mm(16-56in)
	Thinkness	8-50mm(apply to simple carbon steel,low carbon alloy steel);6.4-26.4mm(apply to X70 and above)
	Length	3-12.5m or as required
Steel Material	Gr.B,X42-X70 PSL1, X42-X80 PSL2, L245-L555NB,A516Gr, 55-70 CL11-32
Standard	APISpec5L, APISpec2B, ISO383, GB/T9711-2001,ASTMA671,ASTMA672,JIS DIN,
Usage	Natural gas, petroleum, chemical industry, electric power, metallurgy thermodynamic fields, water supply engineering, steam heating, hydroelectric power station and long pipeline transportation projects and so on.
Ends	Usually Plain ,But Can Be Beveled Or By Your Choice
Technique	LSAW
Surface	Bared Or Black Painted, Galvanized Or With Oiled Or as Client Required
Type	Welded
Section Shape	Round
Third Party Inspection	SGS,BV,CE
Inspection	100% ultrasonic flaw detection for the material plate;100% automatic on-line UT test after welding; 100% whole-length seam X-ray test; 100% inside weld line industrial TV test; 100% hydrostatic test; 100% automatic on-line seam UT test after hydrostatic test, expanding; 100% X-ray test and make X-ray film or picture record on pipe ends; 100% pipe appearance and plate appearance inspection.
Package	In square bundles with standard seaworthy export packing or as request
Date of Delivery	5-45days according to the QTY
Supply Ability	150000tons/year
Port of Shipment	Tianjin Port
Payment term	T/T, Irrevocable L/C at sight
Trade Term	FOB CFR CIF
Others	1) Contract Manufacturing: OEM Service Offered, Design Service Offered, Buyer Label Offered 2) Small quantity can be acceptable 3) Non-standard products can be ordered 4) A strong production capacity and a large inventory guarantee the quick delivery

Q:How do you calculate the thermal expansion of steel pipes?: In order to determine the thermal expansion of steel pipes, it is necessary to utilize the coefficient of thermal expansion (CTE) specific to steel. The CTE represents the extent to which a material expands or contracts in response to temperature fluctuations. Typically, the average value of CTE for steel is around 12 x 10^-6 per degree Celsius (12 μm/m°C). To calculate the thermal expansion of a steel pipe, one must possess knowledge of the pipe's initial length (L0), the temperature change (ΔT), and the CTE for steel. The formula for calculating thermal expansion is as follows: ΔL = L0 * CTE * ΔT In this equation: ΔL denotes the alteration in length of the steel pipe L0 represents the initial length of the steel pipe CTE signifies the coefficient of thermal expansion for steel ΔT indicates the change in temperature For instance, suppose there is a steel pipe with an initial length of 2 meters (L0), and the temperature rises by 50 degrees Celsius (ΔT). The CTE for steel is 12 x 10^-6 per degree Celsius. ΔL = 2m * 12 x 10^-6/°C * 50°C ΔL = 0.00024m/m°C * 50°C ΔL = 0.012m Thus, when the temperature increases by 50 degrees Celsius, the steel pipe will expand by 0.012 meters or 12 millimeters. It is important to bear in mind that this calculation assumes linear expansion, which is applicable for minor temperature variations. However, for larger temperature differences or more intricate pipe systems, a more comprehensive analysis may be necessary to consider factors such as the material properties, geometry, and thermal boundary conditions of the pipes.

Q:What is the pressure rating of steel pipes?: The pressure rating of steel pipes can vary depending on factors such as the size, wall thickness, and specific grade of the steel used. However, steel pipes are commonly available in pressure ratings ranging from a few hundred PSI (pounds per square inch) to several thousand PSI, making them suitable for a wide range of applications.

Q:What are the common standards for manufacturing steel pipes?: The common standards for manufacturing steel pipes include the American Society for Testing and Materials (ASTM) standards, the International Organization for Standardization (ISO) standards, and the American National Standards Institute (ANSI) standards. These standards cover various aspects such as material composition, mechanical properties, dimensions, testing procedures, and quality control requirements to ensure the consistency and reliability of steel pipes.

Q:What are the main aspects of precision steel tubes?: Products according to their application areas are divided into: automotive, precision machinery tubes; power plants, nuclear power tubes; titanium and titanium alloy tubes; chemical tubes; varieties include colored, black; seamless; welding; general and special-shaped

Q:What is the difference between internal threading and external threading of steel pipes?: Internal threading and external threading are two different methods used to create threads on steel pipes. The main difference between them lies in the location of the threads. Internal threading refers to the process of cutting threads on the inside surface of a steel pipe. This method involves using a tool or a die to remove material from the inner diameter of the pipe, creating a helical groove. The resulting threads can be used to connect the pipe to other components, such as fittings or valves. On the other hand, external threading involves cutting threads on the outside surface of a steel pipe. This process usually requires the use of a threading die or a lathe to remove material from the outer diameter of the pipe, leaving behind a helical groove. The external threads allow the pipe to be connected to other components or fittings that have corresponding internal threads. The choice between internal and external threading depends on the specific application and the requirements of the project. Internal threading is often preferred when the pipe needs to be connected to components that have external threads, such as fittings or valves. External threading, on the other hand, is typically used when the pipe needs to be connected to components with internal threads, or when the pipe is intended to be screwed into a threaded hole or coupling. In summary, the main difference between internal threading and external threading of steel pipes is the location of the threads – internal threads are cut on the inside surface of the pipe, while external threads are cut on the outside surface. The choice between these methods depends on the specific application and the type of connections required.

Q:What is the elasticity of steel pipes?: The elasticity of steel pipes refers to their ability to deform under external forces and return to their original shape once the force is removed. Steel pipes are known for their high elasticity, which enables them to withstand various forms of stress and strain without permanent deformation. This property is crucial in applications where pipes are subjected to pressure, bending, or other mechanical forces. The elasticity of steel pipes is determined by the material properties of steel, such as its Young's modulus, which is a measure of its stiffness and ability to resist deformation.

Q:What are the different standards for steel pipe manufacturing?: There are several different standards for steel pipe manufacturing, including ASTM (American Society for Testing and Materials), ASME (American Society of Mechanical Engineers), API (American Petroleum Institute), and DIN (Deutsches Institut für Normung). These standards provide specifications for various aspects of steel pipe production, such as dimensions, chemical composition, mechanical properties, and testing procedures. Compliance with these standards ensures the quality and reliability of steel pipes for different applications and industries.

Q:How are steel pipes protected against underground corrosion?: Steel pipes are protected against underground corrosion through various methods such as cathodic protection, coatings, and corrosion inhibitors. Cathodic protection involves the use of sacrificial anodes or impressed current systems that direct corrosion away from the steel pipes. Coatings like epoxy or polyethylene are applied to the pipes to create a physical barrier against moisture and corrosive elements in the soil. Additionally, corrosion inhibitors can be added to the fluid inside the pipes to prevent corrosion from occurring.

Q:What are the common welding techniques used for steel pipes?: The common welding techniques used for steel pipes include Shielded Metal Arc Welding (SMAW or stick welding), Gas Metal Arc Welding (GMAW or MIG welding), Flux-Cored Arc Welding (FCAW), and Gas Tungsten Arc Welding (GTAW or TIG welding).

Q:Can steel pipes be used for swimming pool installations?: Yes, steel pipes can be used for swimming pool installations. Steel pipes are commonly used for plumbing systems and can be appropriate for swimming pool installations due to their durability and resistance to corrosion. However, it is important to ensure that the steel pipes are properly coated or treated to prevent rusting and deterioration in a pool environment. Additionally, other factors such as water pressure and compatibility with other pool equipment should also be considered.

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