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Welded Stainless steel tubes for pressure purposes-EN10217-7
Description

Welded Stainless tubes of circular cross section made of austenitic (including creep resisting steel) and austenitic-ferritic stainless steel which are applied for pressure and corrosion resisting purposes at room temperature, at low temperatures or at elevated temperatures.

The tubes shall be manufactured form hot or cold rolled plate,sheet,or strip,longltudinally arc or laser welded bu fusionacross the abulting adges,with or without the addition of filler metal. 

Steel grade:
Steel name                        Steel number
X2CrNi18-9                        1.4307
X2CrNi19-11                      1.4306 
X2CrNiN18-10                    1.4311 
X5CrNi18-10                      1.4301 
X6CrNiTi18-10                   1.4541
X6CrNiNb18-10                  1.4550 
X1CrNi25-21                      1.4335 
X2CrNiMo17-12-2               1.4404 
X5CrNiMo17-12-2               1.4401 
X1CrNiMoN25-22-2             1.4466 
X6CrNiMoTi17-12-2             1.4571 
X6CrNiMoNb17-12-2           1.4580 
X2CrNiMoN17-13-3             1.4429 
X3CrNiMo17-13-3               1.4436 
X2CrNiMo18-14-3               1.4435 
X2CrNiMoN17-13-5             1.4439 
X1NiCrMoCu31-27-4           1.4563 
X1NiCrMoCu25-20-5           1.4539 
X1CrNiMoCuN20-18-7         1.4547 
X1NiCrMoCuN25-20-7         1.4529 
X2NiCrAlTi32-20                1.4558