Stainless steel mirror pipe
International Equivalent
| Mark | Analogue | W. Nr. | Aisi Uns | En | Order |
|---|---|---|---|---|---|
| 1.4350 | 304 | X5CrNi18-9 | Delivery from the stock, in stock | ||
| 03Х18Н11 | 1.4306 | 304L | X2CrNi19-11 | Delivery from the stock, in stock | |
| 04Х18Н10 | EI842 | 1.4307 | 304L | X2CrNi18-9 | Delivery from the stock, in stock |
| 03X18AN11 | 1.4311 | 304LN | X2CrNiN18-10 | Delivery from the stock, in stock | |
| 08X19AN9 | 304N | Delivery from the stock, in stock | |||
| 08X18H10 | EI825 | 1.4301 | 304 | X5CrNi1810 | Delivery from the stock, in stock |
| 1.4948 | 304H | X6CrNi18-10 | Delivery from the stock, in stock | ||
| 08Х17Н13М2 | 1.4436 | 316 | X5CrNiMo17-13-3 | Delivery from the stock, in stock | |
| 10X17H13M2 | 1.4401 | 316 | X5CrNiMo17-12-2 | Delivery from the stock, in stock | |
| 10X17H13M2T | EI448 | 1.4571 | 316Ti | X10CrNiMoTi18-12 | Delivery from the stock, in stock |
| 1X16N13M2B | EI680 | 1.4580 | 316Cd | X6CrNiMoNb17-12-2 | Delivery from the stock, in stock |
| 08Х17Н13М2 | 1.4432 | 1.4436 | 316HMo | Delivery from the stock, in stock | |
| 04Х17Н13М2 | 1.4404 | 316L | X2CrNiMo17-12-2 | Delivery from the stock, in stock | |
| 03Х17Н13AM3 | 1.4429 | 316LHMo | X2CrNiMoN17-13-3 | Delivery from the stock, in stock | |
| 03Х17Н13AM3 | 1.4429 | 316LN | X2CrNiMoN17-13-3 | Delivery from the stock, in stock | |
| 08X17H13M2T | 1.4571 | 316Ti | X6CrNiMoTi17-12-2 | Delivery from the stock, in stock | |
| 03Х17Н14М3 | EI844 | 1.4435 | 316L | X2CrNiMo18-4-3 | Delivery from the stock, in stock |
| 1.4910 | 316LN | X3CrNiMoBN17-13-3 | Delivery from the stock, in stock | ||
| 1.4919 | 316H | X6CrNiMoB17-12-2 | Delivery from the stock, in stock | ||
| 04Х18Н11М3 | 1.4401 | 316 | X5CrNiMo17122 | Delivery from the stock, in stock | |
| 316LSi | Delivery from the stock, in stock |
The aphorism "not all that glitters is gold" can be fully applied to the mirror pipe - in quality and aesthetic appearance it is not inferior to a gold one.
Advantages
Mirror stainless steel pipe - a stainless steel pipe with a perfectly polished surface. Another name - mirror pipe - stainless steel polished. It is remarkable for the exceptional quality of the surface. Let's list the main advantages:
- The mirror surface makes it difficult for dirt to adhere.
- On the polished (electropolished) surface the maximum Cr/Fe ratio increases corrosion resistance.
- The smallest defects are visible on the surface.
- High mechanical strength, wear resistance due to reduced stress localization.
Complex alloys with high percentage of chromium, molybdenum, nickel, silicon have maximum resistance. Depending on the temperature, the concentration of the aggressive factor selected alloy grade with the desired set of properties.
Percentage composition of the brand AISI 304.
| Alloy | C | Si | Mn | Ni | Cr | P | S | Ti | Fe |
|---|---|---|---|---|---|---|---|---|---|
| AISI 304. | ≤0,08 | ≤1 | ≤2 | 8-10,5 | 18-20 | ≤0,045 | ≤0,03 | --- | base |
AISI 316 grade percentage composition
| Alloy | C | Si | Mn | Ni | Cr | P | S | Mo | Fe |
|---|---|---|---|---|---|---|---|---|---|
| AISI 316 | ≤0,03 | ≤1 | ≤2 | 10-14 | 16-18 | ≤0,045 | ≤0,03 | 1,75-2,25 | base |
Disadvantages
Difficulty in processing the inner surface excludes the use of mirror HF-pipe (welded by microwave welding) in medicine, the food industry, in pipelines working under pressure.
Production
The grades used are 316 AISI or 304 AISI (in limited positions) according to DIN 17 457 and DIN 72 263. DIN 2263 regulates the quality of pipes, which are produced by high frequency HF-welding of stainless steel bands. HF-welding speeds of up to 40 m / 1 min, which significantly reduces the cost of the pipe. Such pipes are ideal for design solutions, but not suitable for the food industry. They are 30% cheaper than TIG-welded pipes, but the weld seam is 20% less strong.
Welding
100% strength is guaranteed by TIG-welding (Tungset Inert gas). A weld that is thicker than 25 mm is flush welded (DIN 17 457). The seam is as smooth as the surface of a heat-treated stainless steel tube. The inner surface of the joint for the food industry must still undergo a finish grinding. Such stainless steel mirror pipes are marked as CC. DIN 11 850 regulates heat treatment of the pipe (admittedly, bright annealing), chemical treatment (pickling) and grinding treatment.
| Surface finish | Grinding cleanliness |
|---|---|
| Inside surface of the weld | Up to 1.2 mm |
| Main tube material | 0.8 - 1.8 mm |
| Outer surface | up to 1 mm |
mirror pipes are ground on sanding units (at least 5 brushes, normally 6), using polishing pastes on 1 to 2 finishing brushes. When grinding, the grit size should be from grit 600 and higher. Polishing from the inside (as well as from the outside) by an electrochemical method known as the "chemical treatment process" and/or the "variable cladding process" is much more effective than mechanical treatment. Electropolishing smoothes out defects, giving the surface a mirror-like shine. With the proper ratio of electrolyte temperature and current strength, surface defects with increased electrocurrent density are selectively removed, resulting in a very smooth surface.
Use
The appearance of such tubes is very attractive. They are in demand in the design of residential buildings, offices and shopping malls. The aesthetics of mirror pipes are also important in sanitary systems, particularly in sewage systems. Each pipe is provided with a manufacturer's quality certificate. For decorative purposes, such pipes are not subject to mandatory sanitary or other certification.
Delivery
Evek GmbH has a wide range of mirror pipes of all specifications in stock. All pipes are certified. Technical documentation includes data on chemical composition, limiting percentage of impurities; mechanical properties of products. With us you can buy in bulk any semi-finished products for large-scale productions. We also offer optimum conditions for retail buyers. The high level of service and responsiveness of service is the face of our company.
Buy at the best price
Provide for sale an unlimited range of mirror tubes of the highest quality at a competitive price. If you can't choose, there are at your service experienced managers who are always available and ready to consult you. Order with us and you will receive certified products that meet international quality standards in the shortest possible time. If you value your time, contact our nearest office today or place your order online.