Classification and Uses of Pipe Welding

Nowadays, as a tough and long-lasting engineering material, welded pipe plays an indispensable role in more and more fields. As a highly professional material, welded steel pipe has various classifications and uses. Only with a deeper understanding of welded pipes can we choose the most suitable category.

Overview of Welded Steel Pipes

Welded steel pipes are basically made of steel plates or strips that are welded after being curled and formed.There are many of advantages about welded steel pipe, such as simple production process, high production efficiency, variety of specifications and lower equipment costs. Since the 1930s, with the rapid development of continuous rolling production of high-quality strip steel and the advancement of welding and inspection technology, the quality of welds has continued to improve, and the varieties and specifications of welded steel pipes have increased day by day and have replaced non-woven steel pipes in more and more fields.

Different Types of Pipe Welding According to Form of Weld

Welded steel pipes are divided into LSAM steel pipes and spiral welded pipes according to the form of the weld.

LSAM Weldable Pipe

LSAM weldable pipes are generally made of steel plates as raw materials and undergo different forming processes, using double-sided submerged arc welding and post-weld diameter expansion to form welded pipes.When producing LSAM steel pipes, the steel plate is first pressed into a U shape and then into an O shape in the forming mold, and then internal and external submerged arc welding is performed. After welding, expansion at the end or the entire length is usually called UOE Welded pipes without diameter expansion are called UO-welded pipes.Then, the steel plate will be rolled and bent into shape, and then internal and external submerged arc welding will be performed. After welding, the steel plate has become rolled and welded, and then the diameter is expanded into an RBE-welded pipe or not into an RB-welded pipe. The steel plate is formed in the order of J type, C type and O type, and after welding, it is expanded into a JCOE welded pipe or not expanded into a JCO high pressure pipe welding.

Spiral Pipe

Spiral steel pipe, also known as spiral welded pipe, is a type of steel pipe that is formed by spirally winding a hot-rolled coil. This coil is welded together using a submerged arc welding (SAW) process, creating a continuous helical seam along the length of the pipe.Spiral steel pipes are widely used in various industries due to their ability to withstand high pressure, resistance to corrosion, and flexibility in manufacturing various sizes. They are commonly used for water supply systems, oil and gas transportation, and structural applications. The helical seam provides excellent strength and durability, making these pipes suitable for large-diameter applications and projects requiring long pipelines.

Pipe Weld Types according to surface treatment

Welded pipes can be divided into galvanized welded pipes and stainless steel welded pipes according to surface treatment.

Galvanized Welded Pipe

Galvanizing refers to applying a layer of metallic zinc on the outer layer of a steel plate. It can prevent the outer layer of the steel plate from being affected by corrosion and extend its service life. Generally, galvanized plates such as pipes are called galvanized plates.Galvanized welded pipes (https://www.ylsteelfittings.com/galvanized-steel-pipes.html) have good resistance to external force damage and can be used for above-ground pipes, but their corrosion resistance is less than that of stainless steel welded pipe.Therefore, galvanized welded pipes are usually used in housing construction, handicraft production, wire mesh weaving, and highway guardrails.

Stainless Steel Welded Pipe

Stainless steel is a kind of steel that can resist weak corrosion of air, water vapor, steam and chemical corrosion of acids, alkali and salt.Stainless steel welded pipe has good corrosion resistance, but it is easily damaged and is suitable for underground construction. It has a longer service life than galvanized welded pipe but is also more expensive.Therefore, stainless steel welded pipes are mainly used for industrial transportation pipelines and mechanical structural components such as petroleum, chemical industry, medical treatment, food, light industry, mechanical instrumentation, etc. In addition, it is lighter in weight when bending and torsional strength are the same, so it is also widely used in manufacturing mechanical parts and engineering structures. It is also commonly used to produce various conventional weapons, such as gun barrels, artillery shells and so on.

Yulong, A Professional Steel Pipe Manufacturer

There are many types of welded steel pipes with a wide range of uses. It is crucial to choose a suitable steel pipe manufacturer (https://www.ylsteelfittings.com/products/pipe) when purchasing.Cangzhou Yulong Steel Co., Ltd. has been focusing on steel pipe production for long time, We have many years of industry experience and excellent production technology.If you have purchasing needs, please feel free to contact us.we will be fun to offer you our high-quality productions.