DIn2391 St45 Honed Hydraulic tubes

FOB Price

US$ 1.1 - 1.6 / Metric Ton

1 Metric Ton(Min. Order)

Port Yantai/Qingdao
Payment TermsT/T

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Product Details

Thickness	2, 30	Section Shape	Round
Outer Diameter	50 - 250 mm	Place of Origin	Shandong, China
Secondary Or Not	Non-secondary	Application	Hydraulic Pipe
Technique	Cold Drawn	Certification	Other, ISO9001
Surface Treatment	Other, According toe the request	Special Pipe	API Pipe
Alloy Or Not	Non-alloy

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Specifications

DIn2391 St45 Honed Hydraulic tubes
1.Fast delivery
2.Non-standard sizes and made-to-order
3.Small min o

DIn2391 St45 Honed Hydraulic tubes

Seamless precision steel tubes are used variously:
• equipment engineering

• elevator tubes
• gas cylinders
• pit props
• hydraulic lines
• chain pipes
• bicycle/ motorcycle frames
• rivets
• pumps
• technical machinery
• cylinder, piston and telescopic tubes
• stabiliser tubes
• gear box tubes
• drive shaft tubes

Tubes for automotive industry:
• axles for gearboxes
• fuel injection lines
• piston bolts
• ball cages
• steering wheel shafts column tubes
• power-assisted steering tubes

DIN 2391-1: Seamless precision steel tubes

This standard specifies dimensions for cold finished, seamless precision steel tubes. The preferred sizes listed are mainly used in mechanical and automotive engineering.

Steel Grade	Chemical Composition(%)
Steel Grade	C max	Si max	Mn	P max	S max
St35	0.17	0.35	≥0.40	0.025	0.025
St45	0.21	0.35	≥0.40	0.025	0.025
St52	0.22	0.55	≥0.40	0.025	0.025

Mechanical properties

Steel grade	BK		BKW		BKS			GBK		NBK
Steel grade	Tensile Strength Rm N/mm min	Eloga-tion A % min	Tensile Strength Rm N/mm min	Eloga-tion A % min	Tensile Strength Rm N/mm min	Yield Strength ReH N/mm min	Eloga-tion A % min	Tensile Strength Rm N/mm min	Eloga-tion A % min	Tensile Strength Rm N/mm min	Yield Strength ReH N/mm min	Eloga-tion A % min
St35	480	6	420	10	420	315	14	315	25	340-470	235	25
St45	580	5	520	8	520	375	12	390	21	440-570	235	21
St52	640	4	580	7	580	420	10	490	22	490-630	355	22

Designation	Symbol	Description
Cold finished (hard)	BK	Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation.
Cold finished (soft)	BKW	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	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	The last cold forming process is followed by annealing in a controlled atmosphere.
Normalized	NBK	The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere.

Mill test certificates will be issued according to EN10204/3.1B
Packing: Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.
Inspection and Test: Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test, No-destructive Test, Hydrostatic Test.
Surface treatment: Oiled, black painted, hot dipped galvanized or phosphate coating as required.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.
Any Intrest or need, please feel free to contact us!

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Yantai Xinpeng Steel Pipe Co., Ltd.: Contact nameJudy Gao
Chat Now; Phone0086-535-6835398; Address2th,Binglun Road,APEC Technology Industrial Park,Zhifu District,Yantai City, Yantai, Shandong

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DIn2391 St45 Honed Hydraulic tubes

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