Bulb flat steel DNV Grade A| Shipbuilding Flat Bulb DNV A

Bulb flat steel DNV Grade A| Shipbuilding Flat Bulb steel DNV A
 
Our Mill produce and export shipbuilding profile, bulb flat, flat bar material DNV Grade A, DNV Grade B, DNV Grade D, DNV Grade AH36,DNV Grade AH32, DNV Grade DH32,DNV Grade DH36 for ship building project.
 
Our bulb flat steel mainly size is HP80*5, HP80*6, HP100*7, HP100*8, HP120*6, HP120*7 , HP120*8, HP140*7, HP140*8, HP140*10, HP160*7, HP160*8, HP160*9, HP160*11, HP180*8, HP180*9, HP180*10, HP180*11, HP200*9, HP200*10, HP200*11, HP200*12, HP220*10, HP220*11, HP220*12, HP240*10, HP240*11, HP240*12, HP260*10, HP260*11, HP260*12, HP280*11, HP280*12, HP280*13, HP300*11, HP300*12, HP300*13, HP320*12, HP320*13, HP320*14 and so on
 
 
Our mill shipbuilding bulb flat have passed DNV, ABS , LR , BV, GL , NK, KR, RINA,CCS Approval in quality. The better quality, the most competitive price. if you have any requirement in bulb flat, please feel free to contact us by email sales@unitedsteelplate.com
 
The Chemical or element or Composition DNV Grade A bulb flat

DNV GRADE A bulb flat general Strength Chemical Composition
Grade	The Element Max (%)
	C	Si	Mn	P	S	N
DNV GRADE A	0.21	0.50	2.5*C	0.035	0.035	0.02

Crack Sensitivity:  Pcm = (C+Si/30+Mn/20+Cu/20+Ni/60+Cr/20+Mo/15+V/10+5B)%
Carbon Equivalent:  Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%
 
 

DNV GRADE A  Bulb flat steel  property
Grade		Mechanical Property			Charpy V Impact Test
	Thickness	Yield	Tensile	Elongation	Degree	Energy 1	Energy 2
DNV GRADE A	mm	Min Mpa	Mpa	Min  %	20	J	J
	t≤50	235	400-520	18%		-	-
	50＜t≤70	235	400-520	18%		24	34
	70＜t≤100	235	400-520	18%		27	41
Note: Energy 1 is transverse impact test, Energy 2 is longitudinal

 
 
The Equivalent of DNV Grade A bulb flat for shipbuilding steel profile.
BV Grade A, CCS Grade A, DNV Grade A, GL Grade A, NK Grade A, KR Grade A, RINA Grade A, ABS Grade A, LR Grade A