Carbon Steel Plate

Carbon Steel Plate

2 year ago

42 0

Shandong Guanzhou Iron and Steel Group Co., Ltd.

 4 year year

Product details

Due to the harsh working environment of the ship, the hull shell is subject to chemical corrosion of seawater, electrochemical corrosion and corrosion of marine organisms and microorganisms; the hull is subjected to large wind and wave impacts and alternating loads; the shape of the ship is complicated by processing methods, etc. Steel for hull structure is strictly required. First of all, good toughness is the most critical requirement. In addition, high strength, good corrosion resistance, weldability, forming properties and surface quality are required.

Shipbuilding Steels Our hot rolled shipbuilding steel is produced in accordance with the relevant Classification Society, examples of which include Lloyds Register and Det Norske Veritas.

Our steel products include steel shipbuilding plate, fabricated steel sections and floor plate for decking. We can also supply bulb flats for plate stiffening, structural steel angles and inverted angles.

Our plates are supplied under the ASTM/ASME specification (ASTM A131 / ASME SA 131) which is the standard specification for Structural Steel for Ships. We offer higher strength shipbuilding steels as standard .High strength steels offer significant cost advantages by reducing the weight of the structure in comparison to the steel used.

The plates are suitable for use in the construction of container ships and large cargo freighters as well as commercial shipping lines such as luxury cruise ships and ferries. Supply options include heavy plates, surface treated plates and pre-fabricated sections. In most cases, the steel can also be supplied as hot rolled coils or cut into lengths (sheets).

These high yield materials are commonly used in the construction of hulls and superstructures for large shipping vessels. The grades are exclusively for shipbuilding use as set out in the standard.

Normal Steel Grade: A B D E

High strength steel grade: A32 D32 E32 F32 A36 D36 E36 F36

Ultra High strength steel grade: AH40 DH40 EH40 FH40

Marine and offshore vessel used steel plate: NV360 NV410 NV460 NV490 NV510 LR360/360FG LR410/410FG LR460FG/490FG/510FG

Classification Society: (ASTM A-131)ABS CCS LR VL(GL/DNV) RINA BV NK KR RS IRS VR

Product Specification

Product Name	Ship Building Steel Plate
Standard	AISI, ASTM, DIN, JIS, GB, SUS, EN,etc.
Material	A/B/D/E, A32/D32/E32/F32, A36/D36/E36/F36, A40/D40/E40/F40, A131A/B/D/E/AH32/DH32/EH32, AH36/DH36/EH36, AH40/DH40/EH40, NVA420/D420/E420, NVA460/D460/E460, NVA500/D500/E500, NVA550/D550/E550 NVA, NVD, 16MnL, Q235, Q235B, CCS-A, CCS-B, CCSA, CCSB, CCS, CCSD, CCSE, GL-B, GL-D, GL-E
Length	1000mm-12000mm or as required
Width	600mm-3000mm or as required
Thickness	3mm-300mm or as required
Technique	Hot rolled
Surface Treatment	Clean, blasting and painting according to customer requirement
Thickness tolerance	±0.15mm
Application	To prevent the hull from being corroded by chemical corrosion, electrochemical corrosion and sea life and microorganisms.It is used in make ship body ,decks etc.
MOQ	25tons.We also can accept sample order.
Shipment time	Within 15-20 workdays after receiving deposit or L/C
Export packing	Waterproof paper, and steel strip packed. Standard Export Seaworthy Package.Suit for all kinds of transport,or as required
Capacity	250,000 tons/year

Chemical Composition %

Grade	C max	Si max	Mn	P max	S max	Als min
A	0.21	0.50	≥ 2.5C	0.035	0.035	-
B	0.21	0.35	0.80-1.20	0.035	0.035	-
D	0.21	0.35	0.60-1.20	0.030	0.030	0.015
E	0.18	0.35	0.70-1.20	0.025	0.025	0.015

Grade

Als

AH32

≤0.18

≤0.50

0.9~1.6

≤0.035

≥0.015

≤0.02

≤0.35

≤0.20

≤0.40

≤0.08

0.02~0.05

0.05~0.10

DH32

≤0.18

≤0.50

0.9~1.6

≤0.035

≥0.015

≤0.02

≤0.35

≤0.20

≤0.40

≤0.08

0.02~0.05

0.05~0.10

EH32

≤0.18

≤0.50

0.9~1.6

≤0.035

≥0.015

≤0.02

≤0.35

≤0.20

≤0.40

≤0.08

0.02~0.05

0.05~0.10

FH32

≤0.16

0.1~0.5

0.9~1.6

≤0.025

≥0.015

≤0.02

≤0.35

≤0.20

≤0.80

≤0.08

0.02~0.05

0.05~0.10

AH36

≤0.18

≤0.50

0.9~1.6

≤0.035

≥0.015

≤0.02

≤0.35

≤0.20

≤0.40

≤0.08

0.02~0.05

0.05~0.10

DH36

≤0.18

≤0.50

0.9~1.6

≤0.035

≥0.015

≤0.02

≤0.35

≤0.20

≤0.40

≤0.08

0.02~0.05

0.05~0.10

EH36

≤0.18

≤0.50

0.9~1.6

≤0.035

≥0.015

≤0.02

≤0.35

≤0.20

≤0.40

≤0.08

0.02~0.05

0.05~0.10

FH36

≤0.16

0.1~0.5

0.9~1.6

≤0.025

≥0.015

≤0.02

≤0.35

≤0.20

≤0.80

≤0.08

0.02~0.05

0.05~0.10

AH40

≤0.18

≤0.50

0.9~1.6

≤0.035

≥0.015

≤0.02

≤0.35

≤0.20

≤0.40

≤0.08

0.02~0.05

0.05~0.10

DH40

≤0.18

≤0.50

0.9~1.6

≤0.035

≥0.015

≤0.02

≤0.35

≤0.20

≤0.40

≤0.08

0.02~0.05

0.05~0.10

EH40

≤0.18

≤0.50

0.9~1.6

≤0.035

≥0.015

≤0.02

≤0.35

≤0.20

≤0.40

≤0.08

0.02~0.05

0.05~0.10

FH40

≤0.16

0.1~0.5

0.9~1.6

≤0.025

≥0.015

≤0.02

≤0.35

≤0.20

≤0.80

≤0.08

0.02~0.05

0.05~0.10

Mechanical Properties

Grade	Thickness(mm) max	Yieldpoint(Mpa) min	Tensile Strength(Mpa)	Elongation（%）min	V-impact test			cold bend test
					Temperature（℃）	Average AKV		b=2a 180°	b=5a 120°
					Temperature（℃）	lengthways Min	crosswise Min	b=2a 180°	b=5a 120°
A	50	235	400~520	22	—	—	—	—	d=2a
B	50	235	400~520	22	0	27	20	—	d=3a
D	50	235	400~520	22	-10	27	20	—	d=3a
E	50	235	400~520	22	-40	27	20	—	d=3a
AH32	50	315	440~570	22	0	31	22	—	d=3a
DH32	50	315	440~570	22	-20	31	22	—	d=3a
EH32	50	315	440~570	22	-40	31	22	—	d=3a
FH32	50	315	440~570	22	-60	31	22	—	d=3a
AH36	50	355	490~620	21	0	34	24	—	d=3a
DH36	50	355	490~620	21	-20	34	24	—	d=3a
EH36	50	355	490~620	21	-40	34	24	—	d=3a
FH36	50	355	490~620	21	-60	34	24	—	d=3a
AH40	50	390	510~660	20	0	41	27	—	—
DH40	50	390	510~660	20	-20	41	27	—	—
EH40	50	390	510~660	20	-40	41	27	—	—
FH40	50	390	510~660	20	-60	41	27	—	—

Shipbuilding Plate Available Dimensions

Item	Thickness (mm)	Width (mm)	Length/coil diameter(mm)
Shipbuilding plate	6~50	1300~3000	3000~15000
Shipbuilding coil	6~20	1500~2000	760+20~760-70

Shipbuilding Steel Theoretical Weight

Thickness (mm)	Estimate Weight		Thickness (mm)	Estimate Weight
Thickness (mm)	Kg/ft2	Kg/m2	Thickness (mm)	Kg/ft2	Kg/m2
6	4.376	47.1	25	18.962	196.25
7	5.105	54.95	26	20.42	204.1
8	5.834	62.8	28	21.879	219.8
10	7.293	78.5	30	23.337	235.5
11	8.751	86.35	32	25.525	251.2
12	10.21	94.2	34	26.254	266.9
14	10.939	109.9	35	27.713	274.75
16	11.669	125.6	40	29.172	314
18	13.127	141.3	45	32.818	353.25
20	14.586	157	48	35.006	376.8
22	16.044	172.7	50	36.464	392.5
24	18.232	188.4	-	-	-

Processing Technology
Grade A and B
The general strength of grade A and B shipbuilding steel plates can meet the requirements of process and mechanical properties through ordinary rolling, so the production process is relatively simple.
Grade D, E (DH32, DH36, EH 32, EH 36)
Grade D and E series (inlcuding AH32/36, DH32, DH36, EH32, EH36) shipbuilding steel plates require good low temperature toughness and good welding performance. The production high-strength shipbuilding steel plate needs to be normalized by means of controlled rolling and controlled cooling or heat treatment processes with more complete equipment. At the same time, the internal steel purity of the supplied billets is required to be high, especially the content of S, P, N, 0 and H in the steel should be strictly controlled.
Alloy Elements Added to Improve Toughness
In order to ensure the performance of high-strength ship plates, micro-alloying technology is adopted. By adding Nb, V, Ti and other alloying elements to the steel, combined with the controlled rolling process, the grain is refined and the toughness is improved.
Direction of Development for Shipbuilding Plate
High strength, high specification, with the ship's large-scale and safety, and changes in coating specifications, the demand for ordinary A-class panels is gradually reduced, and the demand for high-strength panels is increasing, which is concentrated in large ships of 5m wide. Plate, 200-300mm thickness special thick ship board.

In 2012, we had become primary sales agent for wear plate of Laiwu Steel Group , xingcheng steel group and xinyu steel group ;primary sales agent for stainless steel of TISCO, JISCO, BAOSTEEL. After years of steel international trade, we gain the customers'trust and good reputation.

In 2019, In order to meet the processing request of more customers, we have added three new machining center divisions, first one is 5000W laser machining center, which can cut and bend according to customer's size, sandblasting machining center, painting processing center, With high quality products and top after-sales service, we have won trust and support of customers from all over theworld. Our steel products have been exported to 80 countries and areas: Chile, Peru, Russia, Mongolia, Philippines, Egypt, SaudiArabia, India, United States, Canada Australia and so on.

Test Before Delivery

We will control the quality from part of material steel plate, each plate produced will be have it is own identify label, quality will check the chemical component and physical property and then provide material test certificate. Size dimension will be checked and show pictures to customer to guarantee all goods will be meet requirement.