Product Introduction
EN10219 S355J0H Structural Pipe meets EN standard. It is the product exported to europe. The pipe is used to manufacture pipes, containers, equipment, pipe fittings and mechanical structures. The internal stress of EN10219 S355J0H Structural Pipe is very small and uniformly distributed after the full-length expansion.The corrosion and cracking of the pipes owing to stress can be effectively prevented .The application of welding on site is very easy because of the high dimension precison.
Product Characteristics
The inside and outside welding of EN10219 S355J0H Structural Pipe are performed after the tack welding the welding process is very stable. The NDT is easy to perform on the weld during production and field operation as well. The probability of defects occurrence is low. The coverage of the pipe specification is very wide. It can be either in large diameter with wall thickness or small diameter with wall thickness.
EN10219 S355J0H structural pipe comes in a variety of sizes and specifications. Round tubing is the most common, but square and rectangular tubing are also available. Round tubing typically has an outer diameter ranging from 13.7 to 1214 mm, with a wall thickness up to 40 mm. In practice, a 60.3 mm outer diameter and 3.91 mm wall thickness are common. Square and rectangular tubing, on the other hand, come in a variety of sizes and specifications, and can be customized to suit specific applications.
If the EN10219 S355J0H structural pipe we purchase is primarily used in coastal areas, we'll be very concerned about its corrosion resistance. However, this fundamental corrosion resistance relies on the steel's inherent low-carbon, low-alloy composition, which has limited inherent corrosion resistance. Additional surface treatment is required to ensure long-term use in outdoor, humid, or corrosive environments. In dry indoor environments, a thin, dense oxide film forms on the surface, preventing further corrosion. However, this film is easily damaged in humid or outdoor conditions.
If you want to achieve very good corrosion resistance, when producing EN10219 S355J0H structural pipes, the surface is hot-dip galvanized. The steel is degreased → pickled for rust removal → assisted plating → hot-dip galvanized. When in use, the zinc layer itself acts as a "sacrificial anode" and corrodes before the steel. When used in outdoor environments, it can achieve 10-15 years without obvious rust, and 5-8 years of corrosion resistance in a mild marine environment.
When using EN10219 S355J0H structural pipe, very high yield strength requirements are required. As we all know, when the thickness is ≤16mm, the minimum yield strength is 355MPa, and its yield strength decreases slightly with increasing thickness. In addition, its tensile strength is 470-630MPa, its elongation is ≥21%-22% in the longitudinal direction, and its low-temperature impact toughness (0°C Charpy impact energy ≥27J). With these many product properties, it is widely used in the fields of construction engineering, industrial manufacturing, energy and chemical engineering, playing a vital role.
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