Properties of stainless steel welded pipe

Welded stainless steel pipes: properties, applications and manufacturing processes

In the field of steel pipes, welded stainless steel pipes are receiving more and more attention because of their durability and corrosion resistance. They are widely used in several industries such as oil and gas, construction, and automotive. This article aims to provide an in-depth introduction to the properties, applications, and manufacturing processes of stainless steel welded pipes.

Table of contents

Introduction

1. Properties of stainless steel welded pipe

2. Application of stainless steel welded pipe

3. Manufacturing process of stainless steel welded pipe

4. Types of stainless steel welded pipes

1 Introduction

Stainless steel welded pipe is a pipe product made of stainless steel, which has the advantages of durability, corrosion resistance, and high-temperature resistance. The manufacturing process of stainless steel welded pipe includes steps such as forming, welding, and heat treatment. Different combinations of these processes can produce different types of stainless steel welded pipes, such as austenitic stainless steel welded pipes and ferritic stainless steel welded pipes.

2. Properties of stainless steel welded pipe

Corrosion resistance

One of the main features of stainless steel welded pipe is its corrosion resistance. This is because stainless steel contains elements such as chromium, which can form a dense oxide film to protect the steel from corrosion. In stainless steel welded pipes, the chromium content is generally more than 10.5%, which makes stainless steel welded pipes have good corrosion resistance and can adapt to various corrosive environments.

high strength

Another feature of stainless steel welded pipe is its high strength. During the welding process, a certain heat-affected zone will be formed at the weld, which will reduce the mechanical properties of the welded area. However, stainless steel welded pipe has good strength and plasticity, so that it can withstand large loads and deformation during use, and it is not easy to crack and deform.

heat resistance

The material of stainless steel welded pipe has good heat resistance and can be used in high-temperature environments. This is because some elements in stainless steel, such as chromium, molybdenum, cobalt, etc., can improve the oxidation resistance of the material and prevent oxidation failure in high-temperature environments.

3. Application of stainless steel welded pipe

Oil and Gas Industry

Stainless steel welded pipes are widely used in the oil and gas industry, mainly used to transport fluid media such as oil and natural gas. Its excellent corrosion resistance can effectively resist the corrosion of the medium and prolong the service life of the pipeline.

achitechive

In the construction industry, stainless steel welded pipes are mainly used in building structures, interior decoration, outdoor gardens, etc. Stainless steel welded pipe not only has excellent corrosion resistance but also has good aesthetic performance, which can improve the overall aesthetics of buildings.

Automobile industry

Stainless steel welded pipes are also widely used in the automotive industry. In the automobile exhaust system, stainless steel welded pipe can withstand high temperatures and corrosion, and prolong the service life of the exhaust system. In addition, to automobile manufacturing, stainless steel welded pipes are also used in the manufacture of automobile chassis, doors, bodies, and other parts.

4. Manufacturing process of stainless steel welded pipe

The manufacturing process of stainless steel welded pipe includes steps such as forming, welding, and heat treatment.

forming

The forming process of stainless steel welded pipe mainly includes two kinds, namely cold drawing and hot rolling. Among them, the cold drawing process is suitable for the production of pipes with smaller wall thicknesses, while the hot rolling process is suitable for the production of pipes with larger wall thicknesses.

welding

The welding process of stainless steel welded pipe mainly includes TIG welding and MIG welding. TIG welding is suitable for producing high-quality welds, while MIG welding is suitable for producing high-volume stainless steel welded pipes.

heat treatment

The heat treatment process of stainless steel welded pipe mainly includes solid solution and annealing. The solid solution process can improve the strength and plasticity of the stainless steel welded pipe, while the annealing process can eliminate the welding stress and improve the structure of the stainless steel welded pipe, and improve its corrosion resistance.

Wenzhou Longxiang Steel Pipe Manufacturing Co., Ltd. is a Chinese enterprise specializing in the production and processing of stainless steel welded pipes. Welcome to cooperate.