ERW Structural Pipe Piling Pipe

Steel pipe piles are a type of building material made of steel pipes, mortises and tenons, and are usually designed for use in structures such as offshore docks to support and stabilize foundations. Steel pipe pile products are widely used, especially in areas above water or with low soil bearing capacity. According to different needs, steel pipe piles can be manufactured using processes such as seamless, electric resistance welding (ERW), fusion welding and flash welding. Common types include longitudinal and spiral steel pipe piles. The ERW (electric resistance welding) structural pipe piling pipe has become the first choice for many engineering projects due to its stability and high cost performance.

ERW (Electric Resistance Welding) structural pipe is a steel pipe made by resistance welding. It is welded after forming a steel coil, and the weld is parallel to the pipe. In the manufacturing process, ERW welding includes low-frequency welding, medium-frequency welding and high-frequency welding, among which high-frequency welding (HFW) is the most commonly used method, which can improve welding speed and quality. The manufacturing characteristics of ERW steel pipes make it widely used in many fields such as agriculture, industry and construction, and are particularly suitable for scenes that require strong bearing capacity and high durability.

The uniqueness of ERW structural pipe is that it is formed by welding a whole piece of metal plate, without any seams on its surface, and no other components are filled in the weld. Through the skin effect and proximity effect of high-frequency current, the edge of the steel plate is instantly heated to the welding temperature, and then the weld is formed by pressing through the extrusion roller. This manufacturing process makes the weld of ERW structural pipe high-quality, stable structure and smooth surface. To ensure the strength and stability of the weld, high-quality ERW steel pipes usually also heat treat the weld to refine the metal structure in the weld area.

The manufacturing of ERW structural pipe piling pipes usually follows multiple international standards, such as ASTM A53, ASTM A36, ASTM A139, EN10210, EN10219 and ASTM A252. These standards put forward detailed requirements for the size, material and quality of the pipe to ensure its stability and reliability in use. Commonly used materials include GR.B, S235JRH, S275JOH, S275J2H, S355JOH, S355H2H, GR1, GR2, GR3, etc. These steels have excellent strength and corrosion resistance.

The outer diameter of ERW structural pipe piling pipe usually ranges from 1/2 inch to 26 inches (21.3–660mm), and the wall thickness ranges from 0.055 inches to 1.602 inches (1.65–26.97mm). The specific length can be customized according to customer needs. In addition, the surface treatment of ERW structural pipe is also varied, including bare, black paint coating and corrosion-resistant coating, etc., to adapt to different use environments and protection needs.

ERW structural pipe has strong versatility and is widely used in industries such as oil, natural gas, coal gas, machinery, construction, aviation and power. In the field of construction and infrastructure, ERW structural pipe piling pipe is mainly used for the following purposes:

Structural support: Due to its high strength and stability, ERW structural pipe is suitable for use as a supporting material for infrastructure such as bridges and docks.

Offshore pipelines: ERW pipes with corrosion-resistant coatings can be used for pipeline laying in marine environments, such as for conveying water or sand.

ASTM A252 is one of the commonly used steel pile pipe specifications internationally, which is specifically used to describe cylindrical nominal (average) wall steel pipe piles suitable for permanent load-bearing components or as the shell of cast-in-place concrete piles. The steel pile pipe in this specification is a widely used structural pipe in the construction industry, with high strength and stability, which can meet the load-bearing requirements of buildings and other structures. According to this specification, the outer diameter and wall thickness of the steel pile pipe can be customized according to specific design requirements to meet the strength and durability requirements of different projects.

High bearing capacity: A252 steel pile pipe has a high bearing capacity and can be used in heavy structures such as buildings and bridges.

Good corrosion resistance: ERW steel pipe pile pipe with anti-corrosion treatment can adapt to corrosive environments such as wet and saline, especially suitable for offshore facilities.

Wide applicability: A252 standard steel pile pipe can be used in different types of geological environments, especially for structures that require high strength and long-term support.

ERW steel pipe pile pipe plays an indispensable role in infrastructure construction due to its efficient production process, stable weld quality, economical cost and diversified surface treatment methods. Whether in foundation piling, bridge and pier support, or in retaining walls and pipeline shell applications, ERW steel pipe pile pipe provides solid support for various engineering projects with its excellent performance.