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trench grates , drain grates , drainage grates

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Specifications ISO9001-2000, We are a leading manufacturer of trench grates , drain grates , drainage grates with high quality

ISO9001-2000, We are a leading manufacturer of trench grates , drain grates , drainage grates with high quality   ---------------------------------------------------------------------------------------------------------------------   1. Steel product( Drainage Cover, Ditch Cover, Well Cover, Steel Grating)standard: GB/700-88 or ASTM(A-36) or BS4360(43A).   2. Standard: it is manufactured according to customers' requirementsFor example:   1) Bearing bar pitches may be 12.5,15 to 30, 40, 60, 80 and 90mm, of which 30 and
40mm are recommended   2) Cross bar pitch may be 30, 38, 50, 76 and 100mm, of which 50 and 100mm are recommended.
3) Advantages of steel gird plank: light weight, strong intensity, big load capacity,
transmission and aeration, antiskid and secure, wear well, non-dropsy, non-dirt,and
easy to install 4) Hot galvanizing standard: China GB/T13912-925) Wrapping: wrapping is requested by guests or it depends on the wrapping methods
used before   Ningbo Lihong Steel grating Co., Ltd in China, is a hi-tech enterprise specializing in research, design, and manufacture of Steel Gratings, established in 2001, which is one of the biggest manufacturer and exporter of steel gratings in China, closed to Ningbo international airport and the second biggest international seaport of China, Ningbo port.   This company is specialized in all kinds of steel gratings with better quality, competitive price and faster delivery time. Such as steel grating flooring walkway, platform, stair tread, well cover, Trench Cover, Compound Gratings, tree grates, storage shelves, ceiling, Fences and handrail so on.   Our products have passed the test of Steel Grating Standard of ANSI/NAAMM (MBG531-88), BS4592-1987, YB/T4001-1998. Steel Material Standard of ASTM (A36), BS4360(43A), GB700-88. And our products exported to America, France, UK, East Europe, Southeast Asia, Middle East, South America and so on.           '      Our company implements ISO9001-2000 Quality Management System, and has powerful technical strength, advanced equipment, and perfect experimental and testing equipment. We adhere to the tenet of "quality first, customer uppermost"; develop the market by exquisite design, strict management and favorable products. We offer good quality with competitive price and 24hrs service. Our goal is to pursue zero-defect and create the most vital and famous enterprise in China.   We are a leading manufacturer of trench grates, drain grates, drainage grates with high quality Ningbo Lihong Steel Grating Co., Ltd ISO9001-2008 STEEL GRATING SPECIALIST, YOUR GRATING SOLUTIONS Sales Director: Mr. David Huang, TEL: +86 13757445098, +86 574 88073967, FAX: +86 574 88073962






Bearing Bar

25x3, 25x4, 25x4.5, 25x5, 30x3, 30x4, 30x4.5, 30x5, 32x5, 40x5, 50x5, 65x5, 75x6, 75x10---100x10mm etc

I bar: 25x5x3, 30x5x3, 32x5x3, 40x5x3 etc

US standard: 1''x3/16'', 1 1/4''x3/16'', 1 1/2''x3/16'', 1''x1/4'', 1 1/4''x1/4'', 1 1/2''x1/4'', 1''x1/8'', 1 1/4''x1/8'', 1 1/2''x1/8'' etc       (Mr. David Huang)



Bearing Bar Pitch

12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3, 32.5, 34.3, 35, 38.1, 40, 41.25, 60, 80mm etc

US standard: 19-w-4, 15-w-4, 11-w-4, 19-w-2, 15-w-2 etc.                 (Mr. David Huang)



Twisted Cross Bar Pitch

38.1, 50, 60, 76, 80, 100, 101.6, 120mm, 2'' & 4'' etc                            (Mr. David Huang)



Material Grade

ASTM A36, A1011, A569, Q235, S275JR, SS304, SS400,

 Mild steel & Low carbon steel, etc



Surface Treatment

Black, self colour, hot dip galvanized, painted, spray coating              (Mr. David Huang)



Grating Style

Plain / Smooth, Serrated /teeth, I bar, serrated I bar                              (Mr. David Huang)




China: YB/T 4001.1-2007,  USA: ANSI/NAAMM(MBG531-88),

UK: BS4592-1987,  Australia: AS1657-1985,

Germany: DIN24537-1-2006, Japan: JIS                                                   (Mr. David Huang)


Contact us if you need more details on Trench Grates. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Drain Grates、Drainage Grates. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : Trench Cover