International standards:According to international standards, the allowable deviation value of seamless pipe wall thickness should comply with the following regulations:1. For seamless steel pipes with wall thickness > or = 20mm, the allowable deviation value should be within plus or minus 10%;2. Fo

Seamless tubes, like seamless pipes, are produced without a joint and are known for their high-quality performance in various applications. The ovality of a seamless tube refers to the degree of circularity deviation from a perfect circle. It is an important parameter as it affects the tube's streng

Spiral welded steel pipes are produced by spiral submerged arc welding or double-sided submerged arc welding process. The workshop hoisting specifications for spiral welded steel pipes mainly include the following aspects:1. Lifting equipment: The workshop should be equipped with suitable lifting eq

1. Cutting of large-diameter plastic-coated steel pipes for water transportation. Metal saws should be used to cut steel pipes. Large-diameter steel pipes should be cut with saws. When cutting with entanglement, the rotation speed should not exceed 800r/min; the cross-section of the steel pipe to be

Hot-dip galvanized seamless pipes are generally coated with a layer of zinc on low-carbon steel, and the thickness of the zinc layer is generally 20um. The melting point of zinc is 419°C and the boiling point is about 908°C. During the welding process, zinc melts into a liquid.1. Use indirect fusion

1. Definition of straight seam steel pipe weldsStraight seam steel pipe weld refers to the joint part formed by joining two steel plates together through a welding process. The quality of the weld is directly related to the strength, sealing, and service life of the steel pipe.2. Welding process and

3PE anti-corrosion steel pipe base materials include seamless steel pipes, spiral steel pipes, and straight seam steel pipes. The three-layer polyethylene (3PE) anti-corrosion coating has been widely used in the oil pipeline industry due to its good corrosion resistance, water vapor permeability res

Welded steel pipes offer a variety of advantages that make them suitable for a wide range of applications in industries such as construction, oil and gas, water supply, and more. Here are some key advantages:1. Strength and Durability: Welded steel pipes are known for their high strength and durabil

1. Measuring Tape or Ruler:One of the simplest methods to measure the length of a spiral welded steel pipe is to use a measuring tape or a ruler. This involves physically wrapping the tape or ruler around the circumference of the pipe at the desired location and then extending it to the full length

1. Measure the Outside Dimensions:Use a measuring tape or a ruler to measure the outside width and height of the square tube. Place the measuring device at one end of the tube and extend it to the opposite end. Ensure that the measuring device is aligned perpendicular to the sides of the square tube