First, what are the specifications and sizes of stainless steel welded pipes?
The size of stainless steel welded pipes refers to the outer diameter, wall thickness, and length of the pipe after welding. The size of stainless steel welded pipes 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 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 scenarios and needs, you can choose a stainless steel welded pipe of appropriate length.
In addition, according to international standards, the size of stainless steel welded pipes can also be marked in 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 choosing the size of stainless steel welded pipes, you should refer to the corresponding standards and specifications according to the specific situation.
Second, how to choose stainless steel welded pipes
When choosing stainless steel welded pipes, the following key factors can be considered:
1. Specifications and sizes: Determine the required pipe diameter, wall thickness, and length according to the specific application scenarios and needs. Stainless steel welded pipes come in a variety of specifications and sizes, so when choosing, you should ensure that the selected specifications meet the actual requirements.
2. Material: The material of stainless steel welded pipes directly affects its performance and service life. Common materials include austenitic stainless steel, duplex stainless steel, etc. When choosing, you should choose materials 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 no other defects. When choosing, you can check the welding quality certificate of the product 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, scratch-free, rust-free, and other defect-free surface. When choosing, you can observe the appearance and quality of the product or conduct actual testing.
5. Production standards and certifications: Selecting 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: Selecting suppliers with good reputation and service can ensure high-quality products and timely after-sales service. When selecting a supplier, you can learn about its history, scale, product range, customer evaluation, and other information.
In short, when selecting stainless steel welded pipes, factors such as specifications, materials, welding quality, surface quality, production standards and certifications, and supplier reputation and service should be comprehensively considered to ensure that the selected products meet actual needs and have good quality and reliability.
Post time: Nov-14-2024