Circular hollow sections

Standard Strength class or steel grade symbol
PN-EN 10219-1/2

S235JRH

S275J0H S275J2H S355J0H S355J2H S355K2H
PN-EN 10219-1/2 S235JRH S275J0H S275J2H S355J0H S355J2H S355K2H
PN-EN 10219-1/2 S275NH S275NLH S355NH S355NLH S460NH S460NLH
PN-EN 10219-1/2 S275MH S275MLH S355NH S355MLH S460MH S460MLH



High frequency induction welded round sections – HFW / HFI / ERW
 

diameter d

wall thickness s [mm] / inch

3,0

4,0

5,0

6,0

6,3

7,1

8,0

9,0

10,0

12,0

12,5

14,3

mm

inch

0,118

0,157

0,197

0,236

0,248

0,280

0,315

0,354

0,394

0,472

0,492

0,563

114,3 4 1/2 x x x x                
139,7 5 1/2 x x x x x x            
159,0 6 1/4   x x x x x x x x x x  
168,3 6 5/8   x x x x x x x x x x  
198,0 7 3/4   x x x x x x x x x x  
219,1 8 5/8   x x x x x x x x x x  
273,0 10 3/4     x x x x x x x x x x
323,9 12 3/4     x x x x x x x x x x
355,6 14     x x x x x x x x x x
406,4 16     x x x x x x x x x x

 

Maximum length of sections 18 m


Production programme of circular hollow sections
 

Spirally welded round sections – SAWH
 

diameter d

wall thickness s in mm / inches

5,0

6,0

6,3

8,0

10,0

12,0

12,5

14,3

mm

cale

0,197

0,236

0,248

0,315

0,394

0,472

0,492

0,563

323,9 12 x x x x        
355,6 14 x x x x        
406,4 16 x x x x        
457,0 18 x x x x x      
508,0 20   x x x x x x  
610,0 24   x x x x x x x
711,0 28   x x x x x x x
762,0 30   x x x x x x x
813,0 32       x x x x x
914,0 36       x x x x x
1016,0 40       x x x x x
1067,0 42         x x x x
1168,0 46         x x x x
1219,0 48         x x x x

Maximum length of sections 30 m


Longitudinally welded round sections – SAWL
 

dimensions d

wall thickness s in mm / inches

8,0

8,8

10,0

11,0

12,0

12,5

14,3

16 3

17,5

mm

cale

0,315

0,346

0,394

0,433

0,472

0,492

0,563

0,630

0,689

559,0 22 x x x x          
610,0 1 24 x x x x x x      
660,0 26 x x x x x x x    
711,0 2 28 x x x x x x x    
813,0 32 x x x x x x x x  
914,0 36 x x x x x x x x  
1016,0 40 x x x x x x x x  
1120,0 44 x x x x x x x x  
1168,0 46 x x x x x x x x  
1219,0 48 x x x x x x x x  
1320,0 52 x x x x x x x x  
1420,0 56   x x x x x x x x
1620,0 64     x x x x x x x
1720,0 68     x x x x x x x
1820,0 72     x x x x x x x
2032,0 80     x x x x x x x

The length of sections is 5,2 m – 8,2 m
1) The maximum wall thickness of the profile grade S355J0H; S355J2H; S355K2H is 10,0 mm
2) The maximum wall thickness of the profile grade S355J0H; S355J2H; S355K2H is 12,5 mm
3) Applies to sections of grade S235JRH

See also