To explain this question, firstly we need to know the difference between the Sanitary Welded Tubes and Seamless Tubes,
Sanitary Welded Tubes and Seamless Tubes, which is better?
Sanitary Welded Tubes
Seamless Tubes
The manufacturing process for Sanitary Welded Tubes and Seamless Tubes.
Sanitary Welded Tube manufacturing process
Sanitary Welded Tubes production starts with a stainless steel coil being rolled to achieve a desired wall thickness. The coil is then cut into sizes depending on the tube OD. The cut coil then goes through rolling operations and the seam is welded. Finally the tube is heat treated.
Sanitary Welded Tube manufacturing process
Sanitary Seamless Tubes are produced by the rolling or rotary piecing method.
A stainless rod is heated and pierced while rollers will size the OD of the tube.
The end result is a tube with no seams.
Let us see the main differences:
Many years ago, seamless tubes used to be superior in terms of corrosion resistance because of the welding seams. But because of improvements in the welding and forging of welded tube processes today, the difference is negligible. Today, only in the most extreme conditions in the electronic and semi conductor industry, corrosion resistance of welded tubes could be a problem. But in the food, beverage, and pharmaceutical industry, the corrosion resistance of welded tubes are really more than enough.
Due to the decreasing demand and rising prices, manufacturers today rarely produce Sanitary Seamless Tubes with sizes above 1". This means it is almost impossible to find ready stock of seamless tubes above 1".
If you use seamless tubes, you will also need seamless fittings. Seamless Fittings are almost non existent for sizes above 0.5", meaning you will probably have to mix seamless tubes with welded fittings in your system.
Finally, Seamless Tubes are priced much higher because of costly production processes and small production quantities.
Even High Purity Pharmaceutical BPE Fittings and tubes today are welded, why go through the trouble of looking for seamless tubes and fittings.
To see more specifications of our Sanitary Tubes, pls contact us for detail.
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