DIN 2391 & 1629

DIN 2391 & 1629: German standard
Precision cold drawn seamless steel tube & Seamless Circular Tubes of Non Alloys Steels With Special Quality Requirements;
Application: Oil, Gas and water delivery; Refinery, Boiler and Mechanical equipment manufacturer; structure construction; drilling, ship building and etc.

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DIN 2391 & 1629: German standard
Precision cold drawn seamless steel tube & Seamless Circular Tubes of Non Alloys Steels With Special Quality Requirements;
Application: Oil, Gas and water delivery; Refinery, Boiler and Mechanical equipment manufacturer; structure construction; drilling, ship building and etc.

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产品分类: 合金钢管不锈钢管无缝碳钢管焊接碳钢管打桩管管件法兰涂层管和管 CRA复合和内衬钢管 OCTG和钻杆管道绕线阀门和压力容器

: 石化海上应用油气管道锅炉＆容器 EPC包（配件＆法兰）

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DIN2391 Chemical Composition
Grade	C max	Si max	Mn max	P max	S max	Ni max	Cr max	Mo max
St35	0.17	0.35	0.4	0.05	0.05	-	-	-
St45	0.21	0.35	0.4	0.05	0.05	-	-	-
St52	0.22	0.55	1.6	0.05	0.05	-	-	-

DIN2391 Mechanical Property
Grade	Tensile Test MPa
Grade	Min Yiels point	Tensile Strength
St35	215	340 ̴ 470
St45	255	440 ̴ 570
St52	350	490 ̴ 630

Chemical Composition & Mechanical property (DIN1629)
Standard	Grade	Chemical Composition							Mechanical Properties
Standard	Grade	C min	Si min	Mn min	P max	S max	Cr	Mo	(MPa)	(MPa) min	(%) min
DIN1629	St35.8/St37.5	0.17	/	/	0.04	0.04	/	/	350~480	235	25
	St52.0/St52.3	0.22	0.55	0.17	0.04	0.04	/	/	500~560	270	21

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DIN 2391 & 1629

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