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.