DIN2391 Cold Drawn Precision Seamless Steel Pipes

Precision Steel Pipes for Hydraulic system 
OD:4-80 (mm) WT0.5-10 (mm) Length 12000mm

1. Standard:  
DIN2391 Precision Seamless Steel tubes for precision hydraulic systems

DIN2393 Precision Welded Steel tubes for precision hydraulic systems

2. Steel Grade: St 30SI, St 30 Al, St35,St45, St52, other materials upon agreement with customers.

3. Production method: Cold drawn on the seamless steel tubes, to reach high accuracy on the OD and WT tolerance

4.Size range: 
O.D.:20-350mm     W.T.:1-15mm      L:max12000mm

5. Packing:
In Hexagonal Bundles, wth anti-rust oil protection, with seaworthy packing  
6.Deliver condition:

1). BK Cold finished (hard)
2). BKW Cold finished (soft)

3). BKS Cold finished and stress relieved

4). GBK Annealed
5). NBK Normalized

Seamless Carbon and Alloy Steel Mechanical Tubing ASTM A519

Seamless Carbon and Alloy Steel Mechanical Tubing ASTM A519

Size range: O.D.:6-350mm W.T.:1-50mm L:max12000mm

Standard: ASTM A519

Applications: for Machinery, Mechanical Engineer

Steel Grade and Chemical Compositions:
Steel	C	Mn	P	S	Si	Cr	Mo
Grade	max		max	max	max	min
1008	0.10	0.30-0.50	0.040	0.050
1010	0.08-0.13	0.30-0.60	0.040	0.050
1018	0.15-0.20	0.60-0.90	0.040	0.050
1020	0.18-0.23	0.30-0.60	0.040	0.050
1026	0.22-0.28	0.60-0.90	0.040	0.050
1035	0.32-0.38	0.60-0.90	0.040	0.050
1045	0.43-0.50	0.60-0.90	0.040	0.050
4130	0.28-0.33	0.40-0.60	0.040	0.040	0.15-0.35	0.80-1.10	0.15-0.25
4140	0.38-0.43	0.75-1.00	0.040	0.040	0.15-0.35	0.80-1.10	0.15-0.25

Grade	condition	Ultimat	Yield	Elongation	Rockwell
		Strength	Strength		Hardness
		ksi      Mpa	ksi      Mpa	%	B Scale
1020	HR	50        345	32        221	25	55
	CW	70        483	60        414	5	75
	SR	65        448	50        345	10	72
	A	48        331	28        193	30	50
	N	55        379	34        234	22	60
1025	HR	55        379	35        241	25	60
	CW	75        517	65        448	5	80
	SR	70        483	55        379	8	75
	A	53        365	30        207	25	57
	N	55        379	36        248	22	60
1035	HR	65        448	40        276	20	72
	CW	85        586	75        517	5	88
	SR	75        517	65        448	8	80
	A	60        414	33        228	25	67
	N	65       448	40        276	20	72
1045	HR	75        517	45        310	15	80
	CW	90        621	80        552	5	90
	SR	80        552	70        483	8	85
	A	65        448	35        241	20	72
	N	75       517	48        331	15	80
4130	HR	90         621	70        483	20	89
	SR	105        724	85        586	10	95
	A	75        517	55        379	30	81
	N	90        621	60       414	20	89
4140	HR	120        855	90        310	15	100
	SR	120        855	100        689	10	100
	A	80        552	60        414	25	85
	N	120       855	90        621	20	100

Deliver condition:

1. A.W.H.R.    "as welded" from hot-rolled steel

2. A.W.C.R.      "as welded" from cold-rolled steel

3. S.D.C.R.       "sink-drawn", cold-rolled steel

5. M.D.              mandrel drawn

6. S.S.I.D.          special smooth inside diameter

Please specify the delivery condition and heat treatment requirement when sending the inquiry.