Steel Tube Handbook - 2018

27 BS 3604-1 Steel pipes and tubes for pressure purposes: ferritic alloy steel with specific elevated tem- perature properties. Part 1: Specification for seamless and electric resistance welded tubes. BS 3606 Steel tubes for heat exchangers. ISO 9329-2 See EN 10216-2 Testing comparison DIN 17175 EN 10216-2 Quality class Testing category I TC 1 III TC 2 Boiler steel designation according to EN: • base non-alloy steel P – steel for pressure equipments 235 – minimum yield strength in N/mm 2 G – general charakteristic, devise to second symbol H – high temperature • alloy steel steel designated according to chemical composition TDC standards Steel grade Testing and certificates Other TDC Name Condition Surface Testing Certificate Marking Surfaceprotection Packing 10216-2 P195GH P235GH P265GH + N + N + N Adequate to production mode of tubes and heat treatment. Visually without defects, to remove defects surface can be worked according to appropriate standard articles. Specific working upon agreement. Specific testing Non-alloy special steel TC1 or TC2 EN 10204 • 3.1 • 3.2 See also page 7 Indelibly marking D < 51 mm on label D > 51 mm at end Data • producer • standard • steel grade • TC (C - in steel) • cast (code) • inspector’s mark • identification number Optionally: • additional marking upon agreement • without • upon agreement 16Mo3 14MoV6-3 10CrMo5-5 13CrMo4-5 10CrMo9-10 (11CrMo9-10) (25CrMo4) X11CrMo5 X11CrMo5 (X11CrMo9-1) X11CrMo9-1 X10CrMoVNb9-1 X10CrWMoVNb9-2 7CrWVMoNb 9-6 7CrMoVTiB 10-10 + N + NT + NT + NT + NT + QT + QT + NT1 +NT2 +I +NT +NT +NT +NT ( + QT) +NT ( + QT) Conditions for: Hot finished Cold finished + N - normalized + NT - normalized + tempered + QT - quenching and tempered + I - izotermical annealed Normalising formed includes normalizing Alloy special steel - TC2 Mandatory testing: • product analysis • tensile test • flattening or ring expanding • drift expanding • leak tightness (Page 8) • dimensions • visual • NDT (at TC2) (Page 8) • material identification (at alloy steel) • impact test according to steel grade and dimensions Optional testing upon agreement 17175 St 35.8 St 45.8 17Mn4 19Mn5 15Mo3 Hot finished • as rolled • normalized Cold finished • normalized Quality class I. or III. DIN 50049 Kinds of protocol like EN Usually die stamping or agreement At both ends Data: • steel • grade of quality (C-steel) • manufactuter • inspector • colorstrap At one end for D≥159 mm • castnumber • tube number (III. grade) 13CrMo4 4 10CrMo9 10 Hot finished: • tempered • normalized and tempered Cold finished • normalized and tempered Quality class III. Testing like EN 14MoV6 3 Hot finished Cold finished • normalized and tempered (both methods) 3059-1 320 Hot finished • as rolled (HF) • normalized (N) Cold formed • normalized • visual • tensile test • flattening • drift expanding • leak tightness (hydrotest or NDT) Standard requirements execution Indelibly marking Usually die stamping at one end or Label on the bundle Data: • manufacturer • standard • steel • identification number • cast ( at 3604-1) • without • upon agreement 3059-2 360 440 Cold finished • normalized • testing category 1 with NDT • testing category 2 with hydrotest Other tests like BS 3059-1 243 620 N N (N + T) 622 - 490 N + T or Ann (tempered) 3602-1 360 430 Hot finished • as rolled (HF) • normalized (N) Cold formed • normalized • visual • tensile test • flattening • testing category 1 with NDT - ultrasonic • testing category 2 with NDT - eddy current 3604-1 620 - 440 621 660 622 N + T* N + T N + T N + T