DIN2391 St52 Cold Finish Seamless Carbon Steel Tube

• Customization: Available
• Application: Construction, Oil and Gas, Water Supply
• Pipe Diameter: 2 inches
• Pipe Length: 20 feet
• Surface Finish: Black
• Type: Seamless
• Technique: Cold Drawn
• Material: Carbon Steel
• Surface Treatment: Black
• Usage: Machinery Industry
• Section Shape: Round
• After-Sales Service: Change/Return
• Warranty: 10 Year
• Transport Package: in Bundles
• Specification: ISO, CE, TUV, PED, SGS
• Trademark: KM
• Origin: China
• Production Capacity: 1000ton/Month

Product Description

DIN2391 St52 Cold Finish Seamless Carbon Steel Tube

DIN2391 Steel Tubes are for hydraulic system, steel pipe for automobile, widely used in hydraulic system steel pipe, steel pipe for injection molding machine, steel pipe for hydraulic machine, marine steel pipe, EVA foam oil pressure machinery, precision oil pressure cutting machine steel pipe, shoe machinery, hydraulic equipment, high pressure oil pipe, hydraulic oil pipe, tube joints, steel pipe joints, rubber machinery, forging machinery, die-casting machinery, engineering machinery, high pressure steel pipe for mixer pump truck, sanitation car, automotive industry, shipbuilding industry, metal processing, military industry, diesel engine, internal combustion engine, air compressor, construction machinery, agriculture and forestry machinery, etc.

Steel grade	Chemical composition(%)
Steel name	C max	Si max	Mn	P max	S max
St 35	0.17	0.35	≥0.40	0.025	0.025
St 45	0.21	0.35	≥0.40	0.025	0.025
St 52	0.22	0.55	≤1.60	0.025	0.025

 

Steel grade		Chemical composition(%)
Steel name	Steel number	C max	Si max	Mn	P max	S max	Al min
E215	1.0212	0.10	0.05	0.70	0.025	0.025	0.025
E235	1.0308	0.17	0.35	1.20	0.025	0.025	-
E355	1.0580	0.22	0.55	1.60	0.025	0.025	-

Mechanical Properties

Steel grade	Cold Drawn bright BK		Cold drawn bright BKW		Cold drawn bright BKS			GBK		NBK
	Tensile strength Rm N/mm min	Elongation% min	Tensile strenght Rm N/mm min	Elongation % min	Tensile strenght Rm N/mm min	Yield ReH N/mm min	Elongation% min	Tensile strength Rm N/mm min	Elongation% min	Tensile strength Rm N/mm min	Yield ReH N/mm min	Elongation% 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	255	21
St52	640	4	580	7	580	420	10	490	22	490-630	355	22

Dimension: OD4-60MM,WT0.5-8MM, Length: up to 6m.

Designation	Symbol		Description
	EN10305	DIN2391
Cold finished (hard)	+C	BK	Tubes do not undergo heat treatment following the final cold forming and thus, have a rather high resistance to deformation.
Cold finished (soft)	+LC	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	+SR	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	+A	GBK	The last cold forming process is followed by annealing in a controlled atmosphere.
Normalized	+N	NBK	The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere.

Company Profile
From 1989 to now, Kingmetal Steel focus on manufacturing and distributing pipeline products including piping, fitting, flange, valve and fastener in stainless, carbon, alloy and duplex steel.
Kingmetal has a factory to manufacture seamless stainless steel pipe from DN6 to DN600 and distribute seamless steel pipe and fitting from top brand manufacturers such as Baosteel, Hengsteel, Tiansteel and Pansteel etc.
All of products are strictly compliance with standard, 100% inspection passed including visual, dimension and PMI test before shipment.
Both our sales and logistic teams are over 10 years of experiences and training frequently.
After- sales service with high efficiency, if any products are short quantity/weight or damaged caused by manufacturing, design or transportation can be compensated.

Why choose us?
One-Stop Solution
We have thousands of total production experience, from raw materials to finished products.
Competitive Price
Large scale purchase, standardized production process and efficient management make our price competitive.
Quick Shipping
Years of export experience enable us to control the transportation time more accurately.
Quality Control
The standardized production process, comprehensive management system, professional testing equipment
Special material customization
We support the customization of various complex materials
OEM/ODM
We support any form of OEM/ODM customization requirements.