DIN Stainless Steel Caps and 201 competition

　　1. Material: are stainless steel, composition is slightly different, 304 from the composition point of view is chromium, nickel content is slightly higher.

　　2. The chemical properties: 304 pipe corrosion resistance is better than 201 pipe.

　　3. The physical properties: hardness, toughness, tensile strength and other basic equivalent gloss on the 304 to be slightly stronger than the 201.

　　4. Usage: bathroom, damp, harsh environment and outdoor use 304 stainless steel tube more, the rest of the occasion and the environment using 201 slightly more than 304.

　　5. The cost: 201 pipe cost advantage is obviously better than 304, and there are many in this market is filled with 201 of 304.

　　Based on the above, I think the two single-use ratio from a special environment, 304 slightly stronger than the 201 tube. Popularity from the public on the use of comparison, 201 stainless steel tube was significantly higher than the 304 tube, because it is cheap.