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: How are steel pipes installed underground?: Steel pipes are installed underground through a process called trenching, where a trench is dug in the ground according to the desired pipe route. The trench is then prepared by removing any hindrances and ensuring a level base. The steel pipes are laid into the trench, with proper alignment and connections between sections. Once in place, the trench is backfilled with soil, compacted, and any necessary restoration work is done on the surface.

Q: How do you determine the wall thickness of a steel pipe?: There are several methods available for determining the wall thickness of a steel pipe. The most commonly used and precise approach involves utilizing a caliper or micrometer to measure it. Initially, ensure that the pipe is thoroughly cleaned and devoid of any debris or rust. Subsequently, gently position the caliper or micrometer around the circumference of the pipe, making certain that it is perpendicular to the surface. Proceed to cautiously close the jaws of the measuring tool until they snugly fit against the pipe, taking care not to excessively tighten them and distort the shape. Once the jaws are closed, observe and take note of the measurement displayed on the tool. This reading corresponds to the distance between the inner and outer diameter of the pipe, which is equivalent to the wall thickness. Alternatively, if a caliper or micrometer is unavailable, a pipe wall thickness gauge can be utilized. These gauges are equipped with a series of pins or rollers that can be inserted into the pipe, providing an accurate measurement. Simply insert the pins into the pipe, ensuring proper alignment with the wall, and refer to the reading displayed on the gauge. It is crucial to note that when measuring the wall thickness of a steel pipe, multiple readings should be taken at various points along the pipe to account for any variations. This will yield a more precise average measurement.

Q: What are the factors to consider when selecting pipe materials for high-temperature applications?: When selecting pipe materials for high-temperature applications, it is important to consider factors such as the maximum operating temperature, corrosion resistance, thermal expansion properties, mechanical strength, and cost. The chosen material should be able to withstand the anticipated temperature without deformation or degradation, resist corrosion from the process fluid or environment, have a low coefficient of thermal expansion to minimize stress on the pipe, possess sufficient mechanical strength to handle the pressure and load, and be cost-effective for the specific application.

Q: How are steel pipes used in the telecommunications infrastructure?: Steel pipes are used in the telecommunications infrastructure for various purposes such as underground cable installation, mounting antennas, and supporting communication towers. They provide durability, strength, and protection for the cables and equipment, ensuring reliable and efficient communication networks.

Q: What are the potential health hazards associated with steel pipe installation?: Some potential health hazards associated with steel pipe installation include exposure to hazardous chemicals used in the coating or treatment of the pipes, inhalation of dust or fumes generated during cutting or welding, and physical injuries due to accidents or mishandling of heavy equipment. Additionally, improper handling or disposal of waste materials and contaminated water can pose environmental health risks. It is important to follow proper safety protocols, use personal protective equipment, and ensure proper ventilation and waste management to mitigate these hazards.

Q: Can steel pipes be used for underground sewage treatment plants?: Indeed, underground sewage treatment plants can utilize steel pipes. These pipes are frequently employed in underground settings due to their ability to endure, their strength, and their resistance to corrosion. They can withstand the harsh conditions found underground and effectively transport sewage within the treatment facility. Furthermore, steel pipes can be tailored to meet the specific needs of the sewage treatment plant, including varying diameters and wall thicknesses to ensure proper flow and drainage. Additionally, these pipes can be coated or lined with protective materials, enhancing their resistance to corrosion and prolonging their lifespan. All in all, steel pipes are a dependable and suitable option for underground sewage treatment plants.

Q: Can galvanized pipe be welded with seamless steel tube? What should I do to connect?: See the galvanized pipe and seamless steel pipe steel that differences in how if the difference is too large then the steel used for two kinds of materials for welding requirements is not the same, do not recommend direct welding, low pressure can be used in high voltage wire, welding on both sides of the same material flange with flange connection.

Q: Water, gas, steel pipes, thick steel wire means?: Water pipes, gas pipes and other collectively known as water gas pipe, generally galvanized steel pipe, so it can be called water and gas pipe. Most of them are welded steel tubes made of low carbon steel.

Q: Can steel pipes be used for power plant construction?: Yes, steel pipes can be used for power plant construction. Steel pipes are commonly employed in power plants for various applications such as the transportation of fluids, steam, and gases, as well as for structural support. They offer high strength, durability, and resistance to extreme temperatures and pressures, making them suitable for the demanding conditions found in power plants.

Q: What is the fire rating of steel pipes?: The fire rating of steel pipes can vary depending on factors such as the thickness of the pipe, the type of insulation or fireproofing materials used, and the specific application or building codes. However, steel pipes are generally considered to have good fire resistance properties due to their non-combustible nature and ability to withstand high temperatures.

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