Steel grating for ships

Delivery time: 15-30days
Price term:EXW,FOB,CIF,CFR,CNF,etc.
Payment:L/C,T/T,Western Union,etc.
Port Delivery:Qingdao, Shanghai, Tianjin, Shenzhen,etc.
We can provide customized products in different materials and sizes to meet different needs.
Description
Description

Marine steel grating is a product specially tailored for the shipbuilding industry. Due to the harsh working environment of the ship, the hull is subject to chemical corrosion, electrochemical corrosion of seawater, and corrosion of marine organisms and microorganisms. There are strict requirements for the selection of materials, processing technology, welding technology, edge-wrapped flat steel and twisted rod specifications, welding of fixed plates, and thickness of hot-dip galvanized zinc layer for marine steel grating. The products are used in various occasions such as furnace chamber passages, deck passages, cargo storage platforms, chimney platforms, and wheelhouse platforms.
 

·Raw material requirements: The steel used for marine steel grating is the most critical requirement, first of all, good toughness. In addition, it is required to have high strength, good corrosion resistance, processing and forming performance and surface quality. In order to maintain the quality and ensure sufficient toughness, the Mn/C of the chemical composition is required to be above 2.5, and the carbon equivalent is also strictly required. The selection of flat steel mainly includes: 25 × 5MM, 32 × 3MM, 40 × 3MM, 50 × 5MM, etc. The specifications of the surrounding flat steel shall be the same width as the bearing flat steel and not less than 5MM thickness. The diameter of the stranded square steel must be Φ8MM, and its material must be carbon structural steel Q235A or 1cr18ni9ti stainless steel.
 
·Welding processing requirements: each load-bearing flat steel and edging flat steel are double-faced fillet welding and the welding seam is not less than 3MM; the connection between each load-bearing flat steel and the twisted rod is fully welded; semi-finished black parts After the production is completed, the spatter, welding slag, burr must be removed, the four corners must be polished without sharp edges, and the whole plate must be leveled.
Steel grating for ships
 
 
 
Requirements for the galvanized layer: when the thickness of the bearing flat steel is not less than 5mm, the average zinc layer weight after galvanizing shall not be less than 610g/㎡; when the thickness of the bearing flat steel is less than 5mm, the average zinc layer after galvanizing shall not be less than 5mm. The weight shall not be less than 460g/㎡.
 

 

 

 

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