Steel Tube Handbook - 2018

63 TDC Steel grade Testing and certificates Other TDC standards Name Condition Surface Testing Certificate Marking Surfaceprotection Packing 10305-1 (Other TDC upon agree- ment) (E215) E235 E355 E255 26Mn5 C35E, C45E 25CrMo4 42CrMo4 (Other steel upon agreement) Cold finished Symbol for steel condition: + C + LC + SR + A + N Outside and inside surface smooth Roughness ≤ 4 µ m Tubes in condition +C and +LC with layers of lubricant and lubricant carrier Non-specific Specific: • product analysis • tensile test • dimensions • visual • optional - upon agreement (including NDT) 10204: • 2.2 • 3.1 See also page 17 Label with data on bundle Upon agreement letter spraying on tube: • producer • dimension • standard • steel grade • cast • test style • identification number by specific testing Termporary upon agreement - Posibilities: • manufacturer’s decision • upon agreement • without protection Bundle with section: • round • hexagonal Max weight 2000 kg 2391-2 (Other TDC upon agree- ment) St35 St45 St52 (Other steel upon agreement) Cold finished Symbol for steel condition: BK BKW BKS GBK NBK Grade A of quality Grade C of quality • dimensions • visual • tensile test • flattening* • drift expanding* • optional - upon agreement 50049/2.2 3.1.B 6323/ 1,4 CFS 3 CFS 4 CFS 5 CFS 6 CFS 7 CFS 8 Cold finished Symbol for steel condition: BK BKW GBK NBK • product analysis • tensile test • flattening • leak tightness - upon agreement Test results 49-310 49-312 TU37b TU52b TU20MV6 S 470M S 450MG2 Symbol for steel condition: BK BKW BK + S GBK NBK • tensile test • flattening* • drift expanding* • dimensions • visual • other tests - upon agreement 49-001 • non-specific - 2.2 • specific - 3.1.B - 3.1.C 7945 Fe280 Fe320 Fe360 Fe410 Fe490 Cold finished Symbol for steel condition: BK BKW GBK NBK Non-specific Specific: • product analysis • tensile test • dimensions • visual • optional - upon agreement (including NDT) 10204: • 2.2 • 3.1 Designation of steels for precision tubes according to EN: • machining steel tubes: – steel E355 + AR, E 355 + N E – steel for machine part 355 – minimum yield strenght + AR – heat treatment not applied, + N – normalized or normalising formed – steel 20MnV6 steel designated by chemical composition – guaranteed mean C content 0,20% guaranteed content of Mn and V + AR – heat treatment not applied, + N – normalized or normalising formed • steels for machine parts – steels for working without next heat treatment non-alloy steel E 235, E275, E315, E355 condition +AR or +N – steels with specified impact properties (fine grain) E275K2, E355K2 K2 – minimum average absorbed energy 40J (K) at a test temperature of –20 °C – steels for heat and chemical-heat treatment of parts after working steel C22E C – steel with C content 0,22%, E – assigantion on controlled mean of S and P steel 38Mn6 guaranteed mean C content and guaranteed Mn content Note: * technological test for heat-treated tubes only