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Seamless stainless steel tubes are regarded as high-end components across numerous industrial applications. Manufactured without a weld seam, they offer a flawless material structure and meet the highest requirements in terms of strength, tightness, and corrosion resistance.
What Are Seamless Stainless Steel Tubes?
A seamless stainless steel tube is produced from a solid round billet using piercing, extrusion, or drawing processes – without any welding. The result is a homogeneous material structure with no joining seams or structural weak points.
Since the welding process is completely eliminated, seamless tubes do not feature a longitudinal weld seam, which is often considered a potential stress zone in welded pipes.
What Are the Advantages of Seamless Stainless Steel Tubes?
The key benefi ts of seamless stainless steel tubes can be summarized as follows:
● Higher Mechanical Strength Without a weld seam as a potential weak point, seamless tubes withstand higher pressure loads and mechanical stresses.
● Uniform Corrosion Resistance The homogeneous material structure prevents locally weaker zones along a weld seam. This makes seamless tubes particularly suitable for aggressive and corrosive media.
● Temperature Resistance and Operational Reliability Under extreme high or low temperatures, weld seams may be prone to stress cracking or material failure. Seamless tubes offer enhanced resistance to thermal stresses.
● Maximum Tightness and Operational Safety As there is no weld seam, there is no risk of weld defects. This signifi cantly reduces leakage risks and increases system reliability.
● Long Service Life and Reduced Maintenance The robust construction results in extended service life cycles, minimizing maintenance efforts and replacement costs over time.
● Consistent Wall Thickness Due to precise manufacturing processes, seamless tubes feature highly uniform wall thicknesses, positively infl uencing fl ow characteristics and residual stress distribution.
Technical Standards & Materials
Our seamless stainless steel tubes comply with a wide range of internationally recognized standards:
● DIN / EN / ISO 1127 – Dimensional standard for stainless steel tubes
● EN 10216-5 TC 1 / TC 2 – Seamless stainless steel tubes for pressure purposes
● AD 2000-W2, AD 2000-W10 – Technical rules for pressure vessels
● ASME / ASTM A312, SA/A 789, SA/A 790 – International standards for seamless pipes and tubes
● NACE MR0175, DIN / EN / ISO 15156-1, NACE MR0103 – Standards for use in corrosive (sour service) environments
We supply seamless tubes in various stainless steel grades – ranging from classic austenitic steels to Duplex and Super Duplex alloys, as well as acid-resistant and heat-resistant special grades.
Applications of Seamless Stainless Steel Tubes
Seamless stainless steel tubes are used wherever the highest requirements apply in terms of safety, purity, and mechanical strength, including:
● Chemical and petrochemical industry
● Power generation and energy supply
● Oil and gas industry
