DIN2391 St52 Cold Finish Seamless Carbon Steel Tube

• After-sales Service: Change/Return
• Warranty: 10 Year, 1 Year
• Type: Seamless, Seamless
• Technique: Hot Rolled, Cold Drawn
• Material: Carbon Steel, Carbon Steel
• Surface Treatment: Black, Oiled
• Model NO.: DIN2391
• Usage: Pipeline Transport, Boiler Pipe, Boiler Pipe
• Section Shape: Round, Round
• After-Sales Service: Change/Return
• 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

OD: 4-60mm or as customers' request
WT: 0.5-15mm or as customers' request
Length: 5800mm, 6000mm or as customers' request

Material: St 35,St 45,St 52,E215, E235, E355, E255, E410 

Standard: DIN2391 / EN10305-1/4

We can produce according to your requirement in terms of size, material, standard etc.

Delivery conditions:
+C (BK): Glossy hard;
+LC (BKW): Glossy soft;
+SR (BKS): Glossy soft (tempered);
+A (GBK): Without scale, soft;
+N (NBK): Normalized

Surface Anti-rust:
Both outside and internal tube surface flushing with anti-rust oil.

Surface quality:
Very smooth and bright without oxide scale, pock, strach, crack and other defects...

Surface Cleaness:
Clean without iron scrap, dust, better for hydraulic system life.

Mechanical Properties:
Better extending rate and strength property, after bending with no deformation, after flattening and flaring process with no crack.

Test:
Tensile Strength Test, Flaring and flattening test, Hardness Test, Chemical Compositon Test

Package:
Seaworthy Bundles or wooden cases or according to clients' requirement

Application:
Automobile, engineering vehicles, diesel, chemical engineering machinery, refrigerating equipments for electric appliance and electric heating system.
 

OD Tolerance	4-30mm	31-40mm	41-50mm	51-60mm	61-70mm	71-80mm	81-90mm	91-100mm
	±0.08mm	±0.15mm	±0.20mm	±0.25mm	±0.30mm	±0.30mm	±0.40mm	±0.45mm
WT Tolerance	±10%
Chemical Composition
Grade	C	Si	Mn	P	S	Al Min	V	Others
E215	≤0.1	≤0,05	<0.70	≤0,025	≤0,025	0,025	-	-
E235	≤0,17	≤0,17	<1,20	≤0,025	≤0,025	-	-	-
E355	≤0,22	≤0,55	<1,60	≤0,025	≤0,025	-	-	-
E255	≤0,21	≤0,35	0,40-1,10	≤0,025	≤0,025	-	-	-
E410	0,16-0,22	0,10-0,50	1,30-1,70	≤0.03	≤0.035	0,010-0,060	0,08-0,15	Nb<0,07; Ti<0,05

 

	(%)
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

Mechanical properties (Minimal)
+C		+LC		+SR			+A		+N
R m	A%	R m	A%	R m	R eH	A%	R m	A%	R m	R eH	A%
MPa		MPa		MPa	MPa		MPa		Mpa	Mpa
E215	430	8	380	12	380	280	16	280	30	290 - 430	215	30
E235	480	6	420	10	420	350	16	315	25	340 - 480	235	25
E355	640	4	580	7	580	450	10	450	22	490 - 630	355	22
E255	580	5	520	8	520	375	12	390	21	440 - 570	255	21
E410	750	4	620	8	690	590	12	520	22	550- 700	410	22