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DIN 2391 ST35 BK Thick Wall High - Precision Steel Tube , Round Cold Rolled Pipe

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HAINER STEEL INDUSTRIAL CO.,LIMITED

DIN 2391 ST35 BK Thick Wall High - Precision Steel Tube , Round Cold Rolled Pipe

Country/Region	china
City & Province	wenzhou zhejiang
Categories	Metal Casting Machinery

Product Details

DIN 2391 ST35 BK Thick Wall High - Precision Steel Tube , Round Cold Rolled Pipe

Quick Detail:

Grade:20#,45#,16Mo,16Mn,A106(B,C),St37,St52,Q345,10#-45#,Mo,A53-A369,ST35-ST52,Q195-Q345
Standard:BS 1387,JIS G3461-2005,BS,JIS
Section Shape:Round
Thickness:8 - 40 mm
Outer Diameter: 10 - 168 mm
Application:Structure Pipe
Technique:Cold Rolled
Certification:CE
Special Pipe:Thick Wall Pipe
Alloy Or Not:Non-alloy

Description:

Product Item No.: 005Precision-Cosco Steel
Grade: St37,St52,St45,St35.8,St37-2,St35.4,St52.4,St45-4,ST35,ST37.4,ST54,ST35-ST52
Standard:JIS G3445-2006,DIN 1626,DIN 2391,DIN 17175,DIN EN 10305,DIN 2448,ANSI A210-1996,JIS,GB,DIN,ASTM
Certification: ISO 9001/ TS 16949
Alloy Or Not:Non-alloy
Standard::for high pressure pipe
Certificate: ISO9001 TS16949
Delivery condition::BK, GBK, BKW, BKS or NBK for high pressure pipe

Standard:

China Standard GB8162-2008, GB3639-2000

American Standard ASTM A106, ASTM A519, ASTM A513,ASTM A179

Germany Standard DIN2391, DIN2445

Japanese Standard JIS G3445 etc

European Standard EN10305

Specification

Designation	Symbol	Description
Cold finished (hard)	BK(+C)	Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation
Cold finished (Soft)	BKW (+LC)	The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding)
Cold finished and stress-relieved	BKS(+SR)	Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree.
Annealed	GBK(+A)	The last Cold forming process is followed by annealing in a controlled atmosphere.
Normalized	NBK(+N)	The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere.

DIN 2391 Precision seamless steel tube

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 elements

If tubes having the tolerances and are produced according to the technical 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.

Grade	Mfg. Process	Chemical composition
		C	Si	Mn	P	S	Ni	Cr	Mo	Others	①
											②
											③
											④
St30Si	S	0.10Max	0.30Max	≤0.55	0.040Max	0.040Max	-	-	-	-	①
											②
											③
											④
St30A1	S	0.10Max	0.05Max	≤0.55	0.040Max	0.040Max	-	-	-	Al deoxydized	①
											②
											③
											④
St35	S	0.17Max	0.35Max	≥0.40	0.050Max	0.050Max	-	-	-	-	①
											②
											③
											④
St45	S	0.21Max	0.35Max	≥0.40	0.050Max	0.050Max	-	-	-	-	①
											②
											③
											④
St52	S	0.22Max	0.55Max	≥1.60	0.050Max	0.050Max	-	-	-	-	①
											②
											③
											④

①Cold-finished/hard ②Cold-finished/soft ③Annealed ④Normalized

Grade	Material number	Tensile Test MPa or N/mm²		Remaks(Similar to JIS)	Possibility Temperature
Grade	Material number	Min Yield point	Tensile Strength	Remaks(Similar to JIS)	Possibility Temperature
St30Si	1.0211	-	400Min	(STKM11)
		-	355Min
		-	285Min
		215	295~420
St30Al	1.0212	-	400Min	(STKM11)
		-	355Min
		-	285Min
		215	295~420
St35	1.0308	-	440Min	(STC38)
		-	370Min
		-	315Min
		235	340~470
St45	1.0408	-	540Min	(STKM13)
		-	470Min
		-	390Min
		255	440~570
St52	1.0580	-	590Min	(STKM19)
		-	540Min
		-	490Min
		350	490~630

Applications:

1. Automotive fields
A. Fuel injection lines/nozzles
B. CNG (Compressed Nature Gas) tube-- Burst pressure: 1307Bar, Working Pressure: around 350bar
C. Drive transmission: Steering column elements
D. Gear shafts, hand brake, front axles, airbag inflators, stabilizers, seat fasteners, front-wheel drive shafts

2. Hydraulic Fields
A. Hydraulic circuits (HPL), pneumatic lines, and hydraulic suspension system
B. Hydraulic cylinders (HPZ)

Our advantage

We owned special equipment for manufacturing various high precision products