《DIN2391钢管标准.doc》由会员分享，可在线阅读，更多相关《DIN2391钢管标准.doc（3页珍藏版）》请在三一办公上搜索。
1、This Standard applies to seamless precision steel tubes; and, in compliance with ISO/DIS 3304, those tube dimensions have een selectied from the range of manufactura le tu e dimensions which are mainly used as design elementsIf tubes having the tolerances and are produced according to the technical
2、conditions of deivery as specified in this Standard are to e used as pipelines, then the dimensions specified in DIN 2448 may from time to time be used. These tubes must be ordered according to quality grade C. GradeMfg. ProcessChemical compositionCSiMnPSNiCrMoOthersSt30SiS0.10Max0.30Max0.550.040Max
3、0.040Max-St30A1S0.10Max0.05Max0.550.040Max0.040Max-Al deoxydizedSt35S0.17Max0.35Max0.400.050Max0.050Max-St45S0.21Max0.35Max0.400.050Max0.050Max-St52S0.22Max0.55Max1.600.050Max0.050Max-Cold-finished/hard Cold-finished/soft Annealed Normalized Grade Material numberTensile Test MPa or N/mm2 Remaks(Simi
4、lar to JIS)Possibility TemperatureMin Yield pointTensile StrengthSt30Si1.0211-400Min(STKM11)-355Min-285Min215295420St30Al1.0212-400Min(STKM11)-355Min-285Min215295420St351.0308-440Min(STC38)-370Min-315Min235340470St451.0408-540Min(STKM13)-470Min-390Min255440570St521.0580-590Min(STKM19)-540Min-490Min350490630
