Introduction to Stainless Steel Pipes

1、 Basic symbol representation

The basic symbol for stainless steel pipes is "SS", which represents "Stainless Steel". For example, 'SS Tube' stands for stainless steel pipe. This identifier is the basic symbol, which will be combined with other information to form a complete symbol representation in the future.

2、 Material and grade identification

Add material and grade information after the basic symbol. For example, "SS-304" represents 304 stainless steel pipe, and "SS-316L" represents 316L stainless steel pipe. Stainless steel pipes of different materials and grades have different corrosion resistance and mechanical properties, meeting different usage environments and requirements.

3、 Dimension and tolerance markings

Size and tolerance are important parameters of stainless steel pipes. In the symbol, use "Φ" to represent the outer diameter, followed by a specific numerical value, such as "Φ 50" indicating an outer diameter of 50 millimeters; Use "S" to represent the wall thickness, and follow the specific value accordingly. For example, "S2.5" indicates a wall thickness of 2.5 millimeters. The tolerance range can be indicated in the symbol according to actual needs, such as "‡ 0.5" indicating a tolerance of 0.5 millimeters.

4、 Surface treatment instructions

The surface treatment of stainless steel pipes will affect their appearance and performance. Different surface treatment methods can be represented by letters in the symbol, such as "P" (polishing), "M" (sanding), "A" (pickling), etc. For example, "SS-304-P *" indicates that the 304 stainless steel tube has been polished.

5、 Manufacturing process identification

The manufacturing process is equally important for the quality and performance of stainless steel pipes. The manufacturing process can be identified by specific codes in the symbol, such as "W" (welding), "S" (seamless), etc. For example, "SS-316L-W *" indicates that 316L stainless steel pipes are manufactured using welding processes.

6、 Industry standards and specifications

The production and use of stainless steel pipes must comply with relevant industry standards and specifications. In the symbol, the standard number or specification name followed can be indicated to ensure the compliance and interchangeability of the product. For example, "GB/T 14976" indicates that the product complies with Chinese national standards.