Bulb flat steel for shipbuilding

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24-May-2024

Bulb flat steel introduction:
The bulb flat steel is a kind of medium section material which is mainly used in the field of shipbuilding and bridge building, and the shipbuilding bulb flat steel is an auxiliary medium section material for shipbuilding. In recent years, with the rapid development of shipbuilding industry, there is a strong demand for shipbuilding bulb flat steel.

Shipbuilding bulb flat steel grades:
The steel grade of shipbuilding bulb flat steel corresponds to the ship plate, which can be divided into general strength (grade A, B, D and E) and high strength (AH32, AH36, DH32 and DH36 etc.). The shipbuilding steel plate certificated by different classification societies needs to be matched with bulb flat steel certificated by different classification societies.

Shipbuilding bulb flat steel application:
In the design of large ships and regular ships, the main hull mostly uses the shipbuilding bulb flat steel, with the same thickness and steel grade to the connected shipbuilding steel plate, as the bone (also known as rib or keel).

Shipbuilding bulb flat steel size:

Model	size(mm)					CSA (cm2)	weight (kg/m)
Model	b	t	h	r1	r	CSA (cm2)	weight (kg/m)
HP80x5	80	5	19	4	≤1.5	5.41	4.25
HP80x6	80	6	20	4	≤2	6.21	4.88
HP100x7	100	7	22.5	4.5	≤2	8.74	6.86
HP100x8	100	8	23.5	4.5	≤2	9.74	7.65
HP120x6	120	6	23	5	≤2	9.32	7.32
HP120x7		7	24			10.52	8.26
HP120x8		8	25			11.72	9.2
HP140x7	140	7	26	5.5	≤2	12.43	9.75
HP140x8		8	27		≤2	13.83	10.85
HP140x10		10	29		≤3	16.63	13.05
HP160x7	160	7	29	6	≤2	14.6	11.46
HP160x8		8	30			16.2	12.72
HP160x9		9	31			17.8	13.97
HP160x11		11	33		≤3	21	16.49
HP180x8	180	8	33	7	≤2	18.86	14.8
HP180x9		9	34		≤2	20.66	16.22
HP180x10		10	35		≤3	22.46	17.63
HP180x11		11	36		≤3	24.26	19.04
HP200x9	200	9	37	8	≤2	23.66	18.57
HP200x10		10	38		≤3	25.66	20.14
HP200x11		11	39			27.66	21.71
HP200x12		12	40			29.66	23.28
HP220x10	220	10	41	9	≤3	29.66	22.27
HP220x11		11	42			29	24.5
HP220x12		12	43			31.2	26.22
HP240x10	240	10	40	10	≤3	33.49	25.5
HP240x11		11	45			34.89	27.39
HP240x12		12	46			37.29	29.27
HP260x10	260	10	47	11	≤3	36.11	28.35
HP260x11		11	48			38.71	30.39
HP260x12		12	49			41.31	32.43
HP280x11	280	11	51	12	≤3	42.68	33.5
HP280x12		12	52			45.48	35.7
HP280x13		13	53			48.28	37.9
HP300x11	300	11	54	13	≤3	46.78	36.7
HP300x12		12	55			49.79	39.09
HP300x13		13	56			52.79	41.44
HP320x12	320	12	58	14	≤3	54.25	42.6
HP320x13		13	59		≤3	57.25	45.09
HP320x14		14	60		≤4	60.85	47.6
HP340x12	340	12	61	15	≤3	58.84	46.2
HP340x13		13	62		≤3	62.24	48.86
HP340x14		14	63		≤4	65.54	51.5
HP370x13	370	13	66.5	16.5	≤3	69.7	54.7
HP370x14		14	67.5		≤4	73.4	57.6
HP370x15		15	68.5		≤4	77.1	60.5
HP400x14	400	14	72	18	≤4	81.48	63.96
HP400x15		15	73			85.48	67.1
HP400x16		16	74			89.48	70.2
HP430x14	430	14	76.5	19.5	≤4	89.7	70.6
HP430x15		15	77.5			94.19	73.9
HP430x17		17	79.5			102.79	80.7
HP430x19		19	81.5			111.39	87.4
HP430x20		20	82.5			115	90.8