The specifications and sizes of stainless steel welded pipes
The size of stainless steel welded pipe refers to the outer diameter, wall thickness and length of the pipe after welding. The size of stainless steel welded pipe can be selected according to different needs and standards. The following are some common stainless steel welded pipe sizes:
1. Outer diameter
The outer diameter of stainless steel welded pipes is usually marked in millimeters (mm). Common outer diameters are 6mm, 8mm, 10mm, 22mm, 25mm, 32mm, 38mm, 40mm, 51mm, 60mm, 63mm, 76mm, 89mm, 114.3mm, etc., and can even reach 325mm. In addition, there are some common size specifications such as DN15, DN20, DN25, DN32, etc., and their corresponding outer diameters are also different. The larger the outer diameter, the stronger the load-bearing capacity of the pipe.
2. Wall thickness
The wall thickness of stainless steel welded pipes is also marked in millimeters (mm). Common wall thicknesses include 0.5mm, 1.0mm, 1.5mm, 2mm, 2.5mm, 3mm, etc., and can even reach 8.0mm or thicker. The thicker the wall, the stronger the pressure resistance of the pipe.
3. Length
The length of stainless steel welded pipes is usually marked in meters (m). Common lengths include 3m, 4m, 6m, 9m, 12m, etc., and can even reach 24m. According to the specific usage scenario and needs, you can choose a stainless steel welded pipe of the appropriate length. In addition, according to international standards, the size of stainless steel welded pipes can also be marked according to imperial units, such as inches.
Common imperial sizes include 1/2 inch, 3/4 inch, etc. It should be noted that different countries and regions may have different standards and regulations. Therefore, when selecting the size of stainless steel welded pipes, the corresponding standards and specifications should be referred to according to the specific circumstances.
How to choose stainless steel welded pipe?
When choosing stainless steel welded pipes, there are several key factors to consider:
1. Specifications and dimensions
Determine the required pipe diameter, wall thickness and length according to the specific application scenario and requirements. Stainless steel welded pipes come in a variety of specifications and dimensions, so when choosing, you should ensure that the selected specifications meet the actual requirements.
2. Material
The material of stainless steel welded pipe directly affects its performance and service life. Common materials include austenitic stainless steel, duplex stainless steel, etc. When selecting, you should choose a material with appropriate corrosion resistance, mechanical properties and processing properties according to the needs of the application scenario.
3. Welding quality
Welding quality is one of the important indicators of stainless steel welded pipes. High-quality welded pipes should have uniform welds, no pores, no slag inclusions and other defects. When choosing, you can check the product's welding quality certificate or conduct actual testing.
4. Surface quality
The surface quality of stainless steel welded pipes also affects their aesthetics and service life. High-quality welded pipes should have a smooth surface without scratches, rust and other defects. When choosing, you can observe the appearance quality of the product or conduct actual testing.
5. Production standards and certifications
Choosing stainless steel welded pipes that meet relevant production standards and certifications can ensure their quality and reliability. For example, GB/T 12770-2002 and GB/T 12771-2008 are the main production standards for stainless steel welded pipes in China, and some internationally renowned certification bodies such as ISO, TÜV, etc. can also provide authoritative certification services.
6. Supplier Reputation and Service
Choosing a supplier with good reputation and service can ensure high-quality products and timely after-sales service. When choosing a supplier, you can learn about its history, scale, product range, customer reviews, etc.
Read more: What are the Welding Methods of Stainless Steel Welded pipes?
