Straight seam welded steel pipes are steel pipes made by welding hot-rolled or cold-rolled steel plates or strips together on welding equipment to create a straight seam. Straight seam electric welded steel pipes (YB242-63) are steel pipes where the weld seam is parallel to the longitudinal direction of the pipe. They are generally classified into metric electric welded steel pipes, electric welded thin-walled steel pipes, transformer cooling oil pipes, etc.
Based on welding technology, straight seam steel pipes can be divided into resistance welded straight seam steel pipes and submerged arc welded straight seam steel pipes. Resistance welded straight seam steel pipes are further divided into high-frequency welded straight seam steel pipes, medium-frequency welded straight seam steel pipes, and low-frequency welded straight seam steel pipes. Submerged arc welded straight seam steel pipes are also called double-sided submerged arc welded straight seam steel pipes or LSAW straight seam steel pipes, where LSAW is an abbreviation for Longitudinally Submerged Arc Welding.
Resistance welded straight seam steel pipe is also called ERW straight seam steel pipe, where ERW is an abbreviation for Electric Resistance Welding. High-frequency welded straight seam steel pipe is also called ERW straight seam steel pipe. ERW is a general term for resistance welded steel pipe, specifically high-frequency resistance welded straight seam steel pipe (Electric Resistance Welding, abbreviated as ERW). ERW represents the first letter of the corresponding English words. Resistance welded steel pipe is divided into two types: AC welded steel pipe and DC welded steel pipe.
AC welding is further divided into low-frequency welding, medium-frequency welding, ultra-medium-frequency welding, and high-frequency welding according to different frequencies. High-frequency welding is mainly used for the production of thin-walled steel pipes or ordinary thick-walled steel pipes. High-frequency welding is further divided into contact welding and induction welding. DC welding is generally used for small-diameter steel pipes.
Therefore, in summary, high-frequency welded steel pipe is included in ERW welded pipe, and is a type of ERW welded steel pipe produced using high-frequency welding technology. ERW straight seam welded steel pipe is an advanced, high-quality, and relatively economical steel pipe in the oil and gas storage and transportation field. Straight seam steel pipes have a low probability of defects and can conditionally transport moist, acidic natural gas; after expansion, straight seam steel pipes have high geometric dimensional accuracy; welding is carried out in a straight line in a horizontal position after forming, so misalignment, seam opening, and pipe circumference are well controlled, resulting in excellent welding quality.
Threeway Steel is known as a professional supplier engaged in manufacturing and distributing a wide range of steel pipe, and our headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
