WELDED LSAW STEEL PIPE

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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:What are the different methods of pipe lining for steel pipes?: There are several different methods of pipe lining for steel pipes, each with its own unique features and benefits. These methods include: 1. Spray lining: In this method, a specially formulated coating is sprayed onto the interior surface of the steel pipe. The coating adheres to the pipe and forms a protective barrier against corrosion and chemical damage. Spray lining is relatively quick and cost-effective, making it a popular choice for smaller diameter pipes. 2. Cured-in-place pipe lining (CIPP): CIPP involves inserting a flexible liner into the steel pipe and then curing it in place using steam or hot water. This method creates a seamless and durable lining that restores the structural integrity of the pipe. CIPP is commonly used for larger diameter pipes and can be installed without the need for excavation. 3. Slip lining: Slip lining involves inserting a slightly smaller diameter pipe into the existing steel pipe. The annular space between the two pipes is then grouted or filled with a cementitious material. This method is effective in rehabilitating pipes with minor defects or damages and can significantly increase the pipe's lifespan. 4. Fold-and-form lining: In this method, a flexible liner is inserted into the steel pipe and then expanded to the pipe's diameter using a mechanical or hydraulic process. The liner is then folded and formed to fit the contours of the pipe before being cured in place. Fold-and-form lining is ideal for pipes with irregular shapes or bends. 5. Coating lining: Coating lining involves applying a protective coating to the interior surface of the steel pipe. The coating can be sprayed, brushed, or rolled onto the pipe's surface and provides a barrier against corrosion and chemical damage. This method is commonly used for large diameter pipes or pipes in harsh environments. Each of these methods has its own advantages and disadvantages, and the choice of the lining method will depend on factors such as pipe diameter, condition, budget, and project requirements. It is important to consult with a professional pipe lining contractor to determine the most suitable method for a specific steel pipe rehabilitation project.

Q:What is the outer diameter of the steel tube?: The diameter of a steel pipe refers to the diameter of the steel pipe. The specifications of the steel tube is normal with diameter (diameter and thickness) said, for example 100MM outer diameter and wall thickness of 5MM tube is marked with 100*5.

Q:Can steel pipes be used for conveying hazardous chemicals?: Yes, steel pipes can be used for conveying hazardous chemicals. Steel pipes are known for their high strength and durability, making them suitable for handling various substances, including hazardous chemicals. They can withstand high pressure and temperature, ensuring the safe transportation of these chemicals. Additionally, steel pipes have excellent resistance to corrosion, which is crucial when dealing with corrosive and potentially dangerous substances. Moreover, steel pipes can be easily welded and connected, allowing for a secure and leak-proof transport system. However, it is important to consider the specific requirements of the chemicals being transported and ensure that the steel pipes are properly designed, coated, and maintained to prevent any potential risks or reactions with the hazardous substances.

Q:How do you remove rust from steel pipes?: One effective way to remove rust from steel pipes is to use a wire brush or steel wool to scrub the affected areas. You can also apply a rust dissolver or a mixture of lemon juice and salt on the rusted spots and let it sit for a few hours before scrubbing. Additionally, using a commercial rust remover or a vinegar solution can also help in removing rust from steel pipes.

Q:How are steel pipes used in the pharmaceutical industry?: Steel pipes are commonly used in the pharmaceutical industry for various purposes, such as transporting liquids and gases, transferring raw materials and finished products, and providing a reliable and durable infrastructure for the pharmaceutical manufacturing process.

Q:What are the dimensions of a standard steel pipe?: The dimensions of a standard steel pipe can vary depending on the specific application and industry standards. However, common dimensions include outer diameter (OD) and wall thickness (WT). For instance, a standard steel pipe might have an outer diameter ranging from 0.84 inches to 24 inches, and a wall thickness varying from schedule 5 to schedule 160.

Q:How do you measure the thickness of steel pipes?: There are several methods available for measuring the thickness of steel pipes, depending on the desired level of accuracy. One commonly utilized technique is ultrasonic measurement. This involves employing an ultrasonic thickness gauge, which emits high-frequency sound waves that travel through the walls of the pipe and reflect back to the gauge. By calculating the time it takes for the sound waves to travel and return, an accurate measurement of the thickness can be obtained. This method is non-destructive and can be applied to both ferrous and non-ferrous materials. Alternatively, calipers or micrometers can be used for measurement. This entails manually measuring the outer diameter (OD) and inner diameter (ID) of the pipe, and then subtracting the ID from the OD to determine the thickness. However, it should be noted that this method is less precise compared to ultrasonic measurement. In cases where extreme precision is not necessary, a simple tape measure or ruler can be employed to measure the outer diameter of the pipe. The thickness can then be estimated by referring to standard pipe thickness charts or tables. It is essential to emphasize the significance of accurately measuring the thickness of steel pipes in various applications, such as construction, manufacturing, and engineering. Consequently, it is advisable to utilize suitable measuring tools and techniques to ensure precise results.

Q:How are steel pipes used in the power generation sector?: Steel pipes are commonly used in the power generation sector for various applications such as transporting steam, water, and other fluids within power plants. They are used for conveying fuel and combustion gases, as well as for cooling systems and turbine installations. Additionally, steel pipes are utilized in power plant construction for structural support and as part of the overall infrastructure.

Q:How are steel pipes used in the manufacturing of pulp and paper mills?: Steel pipes are used in the manufacturing of pulp and paper mills for various purposes, such as conveying water, steam, and chemicals, as well as transporting pulp and paper materials within the facility. These durable pipes are essential for the efficient and reliable operation of the mills, ensuring a continuous flow of resources and facilitating the production processes.

Q:How do steel pipes handle seismic expansion joints?: Steel pipes handle seismic expansion joints by incorporating flexible components, such as bellows or expansion joints, which can absorb the movement caused by seismic activity. These flexible components allow the pipes to expand and contract without causing stress or damage to the system, ensuring the integrity and longevity of the pipeline during seismic events.

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