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

Bulb flat steel RINA Grade A| Shipbuilding Flat Bulb steel RINA A
 
Our Mill produce and export shipbuilding profile, bulb flat, flat bar material RINA Grade A, RINA Grade B, RINA Grade D, RINA Grade AH36,RINA Grade AH32, RINA Grade DH32,RINA 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 RINA Grade A bulb flat

RINA GRADE A bulb flat general Strength Chemical Composition
Grade	The Element Max (%)
	C	Si	Mn	P	S	N
RINA 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】%
 
 

RINA GRADE A  Bulb flat steel  property mechanical
Grade		Mechanical Property			Charpy V Impact Test
	Thickness	Yield	Tensile	Elongation	Degree	Energy 1	Energy 2
RINA 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 RINA 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