Hull Structural Steel plate

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Introduction

Shipbuilding steel generally refers to the steel for hull structure, it refers toaccording to the classification to build production specifications for the manufacture of hull structure steel. Often as a special steel orders, scheduling,sales, a ship comprises a ship plate, steel etc..

2 specification

Currently has several large iron and steel enterprises in China the production,but also can according to user needs production of different national standardof ship steel, such as the United States, Norway, Japan, Germany, France,etc..

Varieties and specifications

In hull structural steel according to the minimum yield point strength: Division ofgeneral strength of structural steel and high strength structure steel.

The general strength of structural steel China Classification Society standardsare divided into: A, B, D, E four grades; high strength structural steel China Classification Society standards into three grades, four grades.

Acceptance notice of delivery of ship steel

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1, certificate of quality review:

Mill delivery must according to the requirements of users according to the standard stipulated in the contract delivery and provide the original certificate of quality. The certificate, must have the following contents:

(1) specification requirements; (2) quality record number and certificatenumber; (3) technical grade batch number,; (4) the chemical composition and mechanical properties; (5) the approval of the classification society certificate and surveyor signature.

2, physical examination:

Ship steel delivery, physical objects should have the production factory mark.There are specific:

(1) classification society recognized signs; (2) using the paint box or marking,including technical parameters such as furnace batch number, standardgrade, the length and width dimensions; (3) the appearance of smoothsmooth, defect free.


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Q:What's the material of ASTM A653 G30 galvanized sheet?
Galvanized steel sheet is to prevent the corrosion of steel plate surface and prolong its service life, and the surface of steel plate is coated with a layer of metal zinc. This kind of zinc coated steel plate is called galvanized sheet.
Q:What does steel plate "A3" mean?
Using Q235 steel as punch material, after quenching without tempering, direct use, hardness of 36~40HRC, solved the punch in use in the phenomenon of fragmentation
Q:What is the function of an automobile leaf spring?
Spring: the multi length and unequal curvature of the folded plate. After installation ends naturally curved upward. When the impact force of the wheel face came when the steel plate deformation, play a buffer, damping effect
Q:What is the difference between hot rolled steel and controlled rolled steel plate? Can two plates be used interchangeably?
The rolled steel plate is used to achieve the ideal special performance by controlling the amount of deformation, deformation and temperature. Having higher added value and higher price. Interchangeable, but not a good choice!
Q:What's the difference between single rolling steel sheet and continuous rolling steel plate?
Single rolled steel plate usually refers to medium plate, in the process of rolling and finishing, the plate has been flat, usually thicker (6mm or more), the width of the fastest up to 4800mm.
Q:What's the density of the 0.5 color steel plate?
The traditional coating is divided into several categories, the most high-grade is fluorocarbon coating, almost 20 years of anti-corrosion. Generally from the steel mill to reel in the form of distribution to all parts.
Q:What welding rod should be used for welding of cast iron and Q235B steel plate?
Such as outdoor and field construction, should be relatively closed work environment, do a good job of wind work, reduce air flow. Two. Use acetylene torch to preheat the welding and its surrounding parts, and then weld them to a temperature. Three, welding side edge knocking release and eliminate stress. Four, slow cooling is correct, after welding torch with air flow slow heating, avoid welding temperature drop.
Q:What's the difference between hot-rolled seamless steel tube and cold-rolled seamless steel tube?
The difference between hot rolled seamless steel tube and cold rolled seamless steel tube:1) cold-rolled seamless tubes tend to be of small diameter, and hot-rolled seamless tubes are often of large diameter.2) the accuracy of cold-rolled seamless steel tube is higher than that of hot-rolled seamless steel tube, and the price is higher than that of hot-rolled seamless steel tube.3) hot-rolled seamless tubes are divided into ordinary steel tubes, low and medium pressure boiler tubes, high pressure boiler tubes, alloy steel tubes, stainless steel pipes, petroleum cracking pipes, geological steel pipes and other steel pipes, etc..
Q:What's the difference between profiled steel sheet and color steel plate?
A kind of color steel plate is in fact, but now the normal pressure plate to floor plate thickness in 0.7-1.5MM is used in galvanized coil is the main steel structure building, airport, train station, subway station, shopping malls, etc. some of the large span steel structure.
Q:What is a fixed length steel plate?
Please check the standard: GB/T706-2008 hot-rolled steel fixed length is in accordance with customer requirements made of length, usually 6 meters, 9 meters look

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