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:How to pass through steel at water stop steel plate?
The steel bar cannot pass through the water stopping steel plate, and this should be taken into consideration when arranging the water stop steel plate.Therefore, the water stop steel plate is usually arranged at the end of the plate or wall, but can not be arranged at the edge of the beam column, otherwise the stirrup is interrupted.
Q:What is the aging property of steel plates?
Timeliness refers to the change in performance with time.
Q:Is galvanized steel plate fire-resistant?
Should be refractory, but the melting point of zinc relative to steel is relatively low, 420 degrees or so, if higher than this temperature, galvanized layer will be destroyed, the bottom plate is no problem.
Q:Stainless steel plate how to cast mirror plate?
Stainless steel hot rolled plate mirror polishing (mirror, polishing)In recent years, more and more requirements for polishing of stainless steel hot rolled plate, and even mirror polishing have been demanded. The treatment of hot rolled plate is quite different from that of cold rolled plate, and the whole process is more complicated and difficult to handle than cold rolled plate.
Q:What is Larson steel sheet pile?"
Use Larson steel sheet pile is very extensive, in the permanent structure, can be used for wharf, unloading field, Levee Revetment, retaining wall, retaining wall, breakwater, embankment, dock gate, etc.; in temporary structures, can be used for temporary expansion of bank, flow, large pipeline laying temporary cofferdam, bridge trench excavation retaining, retaining water, sand and so on; in the flood, and can be used for flood control, anti collapse, anti sand etc..
Q:Stainless steel drawing plate, polishing plate, mirror panels of the three differences
Stainless steel wire drawing refers to: stainless steel wire drawing is stainless steel surface like filamentous texture, this is only a stainless steel processing technology. The surface is Matt, and carefully look at the above there is a trace of texture, but can not touch it.
Q:Which is good, z15 grade steel plate and z25 grade steel plate?
Both Z15 and Z25 are the properties of steel against lamellar tearing. Their properties are marked by the fracture shrinkage index of tensile specimens in thickness direction (15 and 25 in Z15 and Z25 are the minimum values of fracture shrinkage)
Q:What is the electromagnetic steel plate in the generator?
The use of silicon steel sheet generator is designed to: 1) as magnetic pole and magnetic path with smaller excitation current can get larger magnetic field; 2) adding silicon steel material, increases the permeability and resistance to reduce eddy current losses in the steel sheet; 3) the steel sheet made of a film, increase the path of vortex flow, reduce the eddy current loss.
Q:What's the difference between profiled steel sheet and color steel plate?
The floor slab is mainly loaded with cement. Color steel plate refers to the color coated plate, with the color coated roll pressure type, the thickness of the basic below 0.6, there are many colors to choose, the thickest to 1. Mainly used in the walls and roofing of factories, instead of bricks and tiles.
Q:The difference and usage of color steel sandwich panel and color profiled steel sheet
The sandwich panel consists of three parts: two upper and lower forming steel plates, the middle core plate (rock wool, polystyrene, polyurethane), thick 50mm/75mm/100mm, steel strip on both sides. Wall panels and shingles used primarily for movable rooms and various large plants.

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