Hot Rolled Steel Sheet for Shipbuilding and pipe

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
500 m.t.
Supply Capability:
5000 m.t./month

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Item specifice:

Standard: ASTM,GB,JIS Technique: Hot Rolled Shape: strip
Surface Treatment: N Steel Grade: Q195,Q215,Q235,HRB400,SS400-SS490 Certification: ISO,SGS
Thickness: 6-700 Width: 50-2000 Length: 4000-18000
Net Weight: -

Product Description:

1. Product Description

The Billets as raw materials, through furnace heating, high-pressure water to reduce the phosphorus, then entering the roughing mill, cutting head, end, and then put into the finishing mill, cutting the edge, after the times of straightening, leveling and other finishing line treatment, and then cutting board or coil becomes the hot rolled steel sheet and hot rolled steel coil.

2.  Main Features 

Characteristics of hot rolled steel hot-rolled steel is a high temperature heating and rolled steel, hot rolled product has high strength, good toughness, easy to processing molding and good weldability and other excellent properties, which are widely used in ship, automobile, Bridges, buildings, machinery, pressure vessels and other manufacturing industries.


3. Excellent Product Image

Hot Rolled Steel Sheet for Shipbuilding and pipe

Hot Rolled Steel Sheet for Shipbuilding and pipe

Hot Rolled Steel Sheet for Shipbuilding and pipe

4. Application

Refers to the production according to the requirements of classification society rules for the construction of hot rolled steel plate used in the manufacture of hull structure.

Hot Rolled Steel Sheet for Shipbuilding and pipe

Because of poor working conditions, hull shell to chemical corrosion and electrochemical corrosion of sea water and sea creatures, microbial corrosion; Hull bear larger impact waves and alternating load; Ship shape the processing method of complex factors, so strict in hull structure steel. First good toughness is one of the most critical requirements, in addition, require high strength, good corrosion resistance, weldability, processing forming performance and surface quality. For assuring quality and ensure there is enough toughness and requirements of the chemical composition of the Mn/C above 2.5, also has strict requirements for carbon equivalent, and recognized by the survey department of steel production. Hull with structural steel in accordance with the minimum yield point strength level is divided into: general strength structural steel and high strength structural steel. General strength and high strength steel with hull structural steel points two kinds, general strength steel according to quality points A, B, D and E four grades; Strength of high strength steel and two levels and three quality grades; AH32, DH32, EH32, AH36, DH36, EH36.

China classification society standard the general strength of structural steel is divided into: A, B, D, E four quality levels (i.e., CCSA CCSB, CCSC, continental scientific drilling (CCSD); China classification society standard level of strength of high strength structural steel for three, four quality grade.

5. FAQ

1.Q: Do you have attended any exhibition?

A: We almost go to Canton Fair and Overseas Exhibitions every year.

2. Q: How to guarantee the quality of the products

A: We have established the international advanced quality management systemevery link from raw material to final product we have strict quality testWe resolutely put an end to unqualified products flowing into the market. At the same time, we will provide necessary follow-up service assurance.

3. Q: How long can we receive the product after purchase?

A: Usually within thirty working days after receiving buyer’s advance payment or LC. We will arrange the factory manufacturing as soon as possible. The cargo readiness usually takes 15-25 days, but the shipment will depend on the vessel situation.

 

 

Why choose us?

Pre-sale Service

1. Sample can be offered with sample charge and courier fee by buyer's side.

2. We have full stock,and can deliver within short time.Many styles for your choices.

3. OEM and ODM order are accepted, Any kind of logo printing or design are available.

4. Good Quality + Factory Price + Quick Response + Reliable Service, is what we are trying best to offer you

5. All of our products are produce by our professional workman and we have our high-work-effect foreign trust-worthy sales team. 

6. We have 18 years' experience of design, manufacture and sell lingerie, we cherish every order from our honor.

 

After you choose

1. Count the most efficient shipping cost and make invoice to you at once.

2. Check quality again, then send out to you at 1-2 working day after your payment.

3. Email you the tracking no, and help to chase the parcels until it arrive you.


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Q:How does the disc shear deal with the problem of side clips into the strip?
The disc shearing machine is a production line made up of uncoiling, feeding, shearing and coiling
Q:What is the hardness of cold rolled steel strip?
The thickness of cold rolled strip and sheet is 0.1 ~ 3mm, and the width is from 100 to 2000mm. The products are made of hot rolled strip or steel plate and rolled in cold rolling mill at room temperature. Cold rolled strip and sheet have the advantages of smooth surface, smooth surface, high dimensional accuracy and good mechanical properties. Most of the products are formed into rolls, and a large part of them are processed into coated steel plates. The roll cold rolled sheet has the advantages of high production efficiency, convenient operation and favorable follow-up processing. Therefore, widely used, it has gradually replaced the same thickness of hot rolled sheet. Only a small number of cold rolled alloy sheets for special purposes are rolled by single plate. The production of cold rolled strip and sheet steel accounts for about 30% of the total output of steel in developed countries. In addition to ordinary carbon steel, there are silicon steel, stainless steel and alloy structural steel, etc..
Q:What is the cause of the deviation of the strip in the rolling process? How to deal with it?
Because of the sudden decrease or disappearance of the tension of coiler during the rolling process, the strip is running off and breaking.
Q:Hot rolled strip, the theory of the thinnest, how thin rolling, why not rolling too thin, is the material or the reasons for plate shape?
The reasons are manifold. Equipment capacity, iron oxide scale, strip temperature control, steel plate type and so on restrict the minimum reduction of hot rolled strip.
Q:What is the difference between cold plate and strip steel?
Cold rolled sheet steel is short for ordinary carbon structural steel cold-rolled plate, also known as cold rolled plate, commonly known as cold plate, sometimes mistaken for cold tie plate. The cold plate is made of ordinary carbon structural steel hot rolled steel strip, which is made into steel plate with thickness less than 4mm after further cold rolling. Because the rolling at room temperature, does not produce iron oxide, so the surface quality of cold plate, high dimensional accuracy, coupled with the annealing treatment, the mechanical properties and process performance are better than the hot rolled steel sheet, in many fields, especially in the field of electrical appliance manufacture, has gradually replaced it with hot rolled steel sheet.
Q:What about the strip scraping in the annealing furnace?
Thus forming an air knife scratch. This kind of defect causes the product to be wasted because the coating is scratched. Proper control of strip tension in productionForce and adjust the nozzle distance, can avoid this kind of defect happen.
Q:Causes of zinc removal in hot rolled strip
The Al content in the alloy layer is little, and the Fe2Al5 alloy layer which is decisive to the adhesion of the zinc layer is not generated, or the alloy layer is damaged by the excessive growth of the iron zinc alloy layer.
Q:The relation between hot rolled strip and cold rolled coil, hot rolled strip and cold rolled strip
Hot rolled strip: hot rolled strip, also known as hot rolled strip, commonly known as hot plate. Hot rolled strip with width less than or equal to 600mm, steel plate of thickness 0.35-200mm and steel strip of 1.2-25mm thickness. The strength of hot rolled steel plate surface quality is relatively low, almost (oxidation low smoothness), but good plasticity, general plate, cold-rolled plate, high strength, high hardness, high surface smoothness, generally can be used as a punching sheet, plate.Cold rolled strip: cold rolled strip and sheet, general thickness of 0.1 ~ 3mm, width of 100 ~ 2000mm, all with hot rolled strip or steel plate as raw material, at room temperature by cold rolling rolling
Q:What is the difference between galvanized steel cold base galvanized steel strip and hot galvanized steel strip?
In addition because of the high density of zinc, galvanized steel coating with the same aluminium zinc plate in the price there is no advantage, because the control relationship between zinc flower, zinc plating is more difficult to control, and anti oxidation performance and ALuminum zinc is poor compared to several times, so now mainly in the aluminum zinc as the main building materials and its the performance is 3-4 times of zinc, but the current electronics industry because of influence of hot dip galvanizing plate conductivity, appearance or using mainly low coating, building materials mainly to hot-dip aluminum zinc 100g/ square meters above. The main hot dipped aluminum zinc is 55%AL and 44.5%Zn.
Q:What are the sectors in which galvanized steel strips can be used?
Steel sheet galvanized steel strip is a kind of narrow and long steel plate produced by various steel rolling mills in order to meet the needs of industrial production of various metal or mechanical products in different industrial sectors. Strip steel, also called steel belt, is slightly different in length according to the size of each roll. The strip is supplied in general, and has the advantages of high dimensional accuracy, good surface quality, easy processing and material saving.

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