Place of Origin : Henan,China
Post Date : 06-01-2020
Expiry Date : 02-05-2020

Because Of The Bad Working Environment, Hull To Corrosion By Seawater Chemical Corrosion, Electrochemical Corrosion And Marine Organisms And Microorganisms; Hull Under High Wave And Alternating Load; The Ship Shape Processing Method Of Complex Factors Such As, So The Steel Hull Structure Strict Requirements. First Of All, Good Toughness Is The Most Critical Requirement. Besides, It Requires High Strength, Good Corrosion Resistance, Welding Performance, Processing Performance And Surface Quality. In Order To Ensure Quality And Ensure Enough Toughness, The Chemical Composition Of Mn/C Is Above 2.5, And The Carbon Equivalent Is Also Strictly Required, And It Is Produced By A Steel Factory Approved By The Ship Inspection Department. The Strength Grade Of The Structural Steel Used In The Hull Is Divided Into The General Strength Structural Steel And The High Strength Structural Steel According To The Minimum Yield Point. Hull Structural Steel Is Divided Into Two Kinds: General Strength And High Strength Steel. The General Strength Steel Is Divided Into Four Grades According To The Quality: A, B, D And E. The High-strength Steel Is Divided Into Two Strength Grades And Three Quality Grades; AH32, DH32, EH32, AH36, DH36 And EH36.

The Standard Strength Steel Of China Classification Society Is Divided Into Four Quality Grades: A, B, C And D, Namely, CCSA, CCSB, CCSC And CCSD. The High Strength Structural Steel Regulated By China Classification Society Is Three Strength Grade And Four Quality Grade.
Classification According To The Classification Society, There Are ABS, LR, GL, DNV, BV, NK, KR, RINA, CCS, Etc.



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