Different properties
1. High-frequency welded steel pipe: After hot-rolled coil is formed in a forming machine, the skin effect and proximity effect of high-frequency current are used to heat and melt the edges of the tube. Pressure welding is then performed under the action of squeeze rollers to produce the product.
2. Straight seam welded steel pipe: including double-sided submerged arc welded straight seam welded steel pipe and high-frequency resistance welding. The English abbreviation of high-frequency resistance welding is ERW. Submerged arc welded straight seam steel pipe is divided into UOE, RBE, and JCOE steel pipe according to its different forming methods.

Different Materials
1. High-Frequency Welded Steel Pipe: High-frequency resistance welded steel pipe uses a different welding process than conventional welded pipe. The weld seam is formed by melting the base metal of the steel strip, resulting in greater mechanical strength than conventional welded pipe.
2. Straight seam welded steel pipe: The materials of straight seam welded steel pipe mainly include Q195, Q215, Q345, and X42 pipeline steel series. According to the specified wall thickness, straight seam welded steel pipes are divided into ordinary steel pipes and thickened steel pipes. According to the form of the pipe ends, steel pipes are divided into threaded and non-threaded types.

Different Features
1. High-frequency welded steel pipe: Smooth surface, high precision, low cost, and minimal weld height, making it suitable for 3PE anti-corrosion coating. High-Frequency Welded Steel Pipes differ significantly from Submerged Arc Welded Pipes in welding methods. Since welding is completed instantly at high speed, the difficulty of ensuring welding quality is much higher than that of submerged arc welding.
2. Straight seam welded steel pipe: The length of straight seam welded steel pipe is mainly divided into fixed length and variable length, which is mainly based on customer requirements. The length is generally 6-14 meters. Large-diameter straight seam welded steel pipe may require two steel plates for rolling, which also forms a double weld.

Answers

• 
  What's the difference between high-frequency welded steel pipe and straight seam welded steel pipe? 13/10/2025 17:00:38
• 
  Composition of Pipeline Anticorrosion and Thermal Insulation Layers 13/10/2025 07:25:59
• 
  What is the range of side lengths for unequal-leg angle steel? 11/10/2025 12:08:02
• 
  The Difference Between Black and Galvanized Flat Steel 11/10/2025 09:31:50
• 
  Why is the hot-dip galvanizing coating peeling? 10/10/2025 10:08:15