DIN 2391 Seamless Steel Tubes By wilsonpipeline.com

DIN 2391 Seamless Steel Tubes

Outside Diameter (Nominal Size ): 6 – 80 mm
Inside Diameter: 2 – 74 mm
Wall Thickness: 0,5 – 6 mm
Tolerances:
Outside Diameter:
OD 6 – 30 mm: ± 0,08 mm
OD 32 – 40 mm: ± 0,15 mm
OD 42 – 50 mm: ± 0,20 mm 
OD 55; 60 mm: ± 0,25 mm 
OD 65; 70 mm: ± 0,30 mm
OD 75; 80 mm: ± 0,35 mm 
Wall Thickness: ± 10%
Notes:

1. Steel grades: St 35, St 45, St 52
2. Length up to 9 m.
3. Test certificates according to DIN EN 10204.

DIN 2391 Seamless Steel Tubes Sizes
Nominal Size, mm	Wall Thickness, mm
6; 7	0,5; 0,8; 1,0; 1,2; 1,5; 1,8; 2,0
8	0,5; 0,8; 1,0; 1,2; 1,5; 1,8; 2,0; 2,2; 2,5
9	0,5; 0,8; 1,0; 1,2; 1,5; 1,8; 2,0; 2,2; 2,5; 2,8
10; 12	0,5; 0,8; 1,0; 1,2; 1,5; 1,8; 2,0; 2,2; 2,5; 2,8; 3,0
14; 15; 16; 18	0,5; 0,8; 1,0; 1,2; 1,5; 1,8; 2,0; 2,2; 2,5; 2,8; 3,0; 3,5
20; 22	0,5; 0,8; 1,0; 1,2; 1,5; 1,8; 2,0; 2,2; 2,5; 2,8; 3,0; 3,5
25; 26; 28; 30	1,0; 1,2; 1,5; 1,8; 2,0; 2,2; 2,5; 2,8; 3,0; 3,5; 4,0; 4,5; 5,0; 5,5; 6,0
32; 35; 38; 40	1,0; 1,2; 1,5; 1,8; 2,0; 2,2; 2,5; 2,8; 3,0; 3,5; 4,0; 4,5; 5,0; 5,5; 6,0
42; 45; 48; 50	1,0; 1,2; 1,5; 1,8; 2,0; 2,2; 2,5; 2,8; 3,0; 3,5; 4,0; 4,5; 5,0; 5,5; 6,0
55; 60; 65	1,5; 1,8; 2,0; 2,2; 2,5; 2,8; 3,0; 3,5; 4,0; 4,5; 5,0; 5,5; 6,0
70; 75; 80	3,0; 3,5; 4,0; 4,5; 5,0; 5,5; 6,0

Mechanical properties Of DIN 2391 Seamless Steel Tubes
Steel Grade	Tensile Strength, N/mm2 (min)	Yield Strength, N/mm2 (min)	Elongation, % (min)
NBK
RSt 34-2	210 – 410	205	28
RSt 37-2	340 – 470	235	25
St 44-2	410 – 540	255	21
BK
RSt 34-2	460	–	6
RSt 37-2	490	–	6
St 44-2	290 – 310	–	5
GBK
RSt 34-2	300	–	28
RSt 37-2	315	–	25
St 44-2	390	–	21

Chemical Composition (%, max) Of DIN 2391 Seamless Steel Tubes
Steel Grade	C	Si	Mn	S	P
RSt 34-2	0,15	0,30	0,60	0,025	0,025
RSt 37-2	0,17	0,30	0,70	0,025	0,025
St 44-2	0,21	0,30	1,1	0,025	0,025

APPLICATIONS:  

1. Petrochemical industry

2. Pharmaceutical industry 

3. Food industry

4. Aviation and aerospace industry

5. Architectural decoration industry

6. Gas and Oil

Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)

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