Marine Grating

Marine Grating

Hi-sea Marine Grating is widely used in all kinds of channels, such as machine furnace storehouse passageway of ship,deck walkway, warehouse platform, chimneys platform, bridge house platform, etc.Marine grating is specially tailored for shipbuilding industry.Different specifications can be available according to the needs of different users.

Hi-sea product design, production and acceptance strictly conform to CB/T608-1998 standard.At the same time, the selection of materials, processing technology of the marine steel grating, welding process, package edge flat steel and the specifications of the twisting lever, fixed plate welding and hot dip galvanized zinc layer thickness all also have strict requirements.

Base Materials of Marine Grating:

Q235A carbon steel, stainless steel (1cr18ni9ti stainless steel ordinary material) resin glass fiber reinforced plastic grille( FRP fiber reinforced composite plastics)

Materials of Marine Grating:

Plain type flat steel,I-bar type flat steel and FRP reinforced composite plastic

Surface treatment of marine grating:

General hot dip galvanized process is for carbon steel

Acid picking and polishing processing are for stainless steel.

The main particularity of selecting material,welding and galvanizing:

1.Raw material requirements: Good toughness of steel is one of the most critical requirements. In addition, high strength, good corrosion resistance and processing forming performance and surface quality are important. The requirements of the chemical composition Mn/C is above 2.5 for assuring quality and ensuring enough toughness.Flat steel type mainly has:25×5mm,32×3mm,40×3mm,50×5mm, etc.Wrapped edge flat steel specification shall be as wide as bearing flat steel and not less than 5 mm thickness of flat steel.The twisted square steel diameter of width direction must be Φ 8mm.The material must be carbon structural steel Q235A or 1cr18ni9ti stainless steel.

2.Welding processing requirements:Each bearing flat steel and package edge flat steel are two-side package fillet welding,the welding seam is not less than 3 mm;Each bearing flat steel and the joint of twisting rod are full welding; Must remove splash, welding slag, burr and grinding after After finishing black pieces production of the semi-finished products. The four angle has no sharp edges and the whole is flat.

3.The galvanized layer requirements of marine grille: When the thickness of the bearing flat steel is not less than 5 mm, the average zinc layer weight after galvanizing is not less than 610 g / ㎡;When the thickness of the bearing flat steel is less than 5 mm,the average zinc layer weight after galvanizing is not less than 460 g / ㎡.The quality requirements comply with the latest GB/T13912-2008 standard.

Marine grating is in accordance with these standards as follows:Chinese CCS standard, Germany GL standard, French BV standard, British LR standard, Norway DNV standard and so on.Different national standard and the user's production needs are various.The standard strength structural steel set by the China classification society has four quality grades to distinguish general strength and high strength.

Specifications of Marine Grating: (for reference)

Form code	Name	Specifications of flat steel	Specifications of cross-bar	Flat steel pitch	Cross-bar pitch	Outline dimension	Application
AC	Carbon steel grating	32*3mm 40*3mm 50*5mm	6mm	40mm	100mm	500*1000mm 600*1000mm 700*1000mm 800*1000mm	machine furnace storehouse passageway,deck walkway,platform
AB	Stainless steel grating
BG	I-bar type steel grating	15*38mm 20*25mm	6mm	30mm 25mm	130mm	500*1000mm 600*1000mm 690*1000mm 780*1000mm	machine furnace storehouse passageway,deck walkway,platform

Form code	Name	Single grating size	Thickness	Width of up rib	Width of down rib	Outline dimension	Application
BF	FRP steel grating	38*38 mm	30 mm	6.5 mm	5 mm	500*1000mm 600*1000mm 700*1000mm 800*1000mm	machine furnace storehouse passageway,deck walkway,platform
		38*38 mm	25 mm	6.4 mm	5 mm
		40*40 mm	25 mm	6.5 mm	5mm

Note:Marine grating can be customized according to client' special requirements.For any more information,please feel free to contact us directly.

More Marine Gratings are as follows:

Hot Dip Galvanized Marine Steel Grating	Marine Galvanized Steel Bar Grating	Marine FRP Fiberglass Grating	FRP GRP Fiberglass Ship Deck Grating
Stainless Steel Marine Grating	I-bar Type Marine Steel Grating	Marine Platform Steel Grating	Marine Deck Steel Grating

Certificates:CCS,GL,BV,LR,DNV,etc.