stair ladder

Specifications

manufacture different styles of stair ladders and kinds of Drain grates , drain cover , drainage cover of steel grating.

We are one of the biggest and professional manufacturer of high quality steel grating in China .We are  located in Ningbo and near to Shanghai  . Ningbo Lihong Steel Grating Co.,Ltd has approved ISO9001-2000 Quality Management System and we work ISO9001-2008 that is the newest edition now.  There are many regular grating customers in USA ,AUS,Kuwait, UAE, Malaysia, ,Philippine,Singapore, UK,New zealand,Tunisia ,South Africa and  so on. More than 60% of products is exported to the worldwide.

 

Our company is specialized in manufacturing and exports all kinds of steel gratings with the best quality and  competitive price and faster delivery time such as steel / mill black and hot dip Galvanizing / and stainless grating flooring walkway, platform ,steel structures, stair tread, well cover, trench cover, sump cover,compound gratings, storage shelves, ladder, fences and handrail so on for construction project, oil project, seaport, power plant, water plant, defense project, chemical factory and so on.

 

We produce three kinds of steel gratings, they are Plain Style Steel Grating, Serrated Style Steel Grating and I Bar Type Steel Grating. They are widely used in steel structure platforms, stair treads, sidewalks, drainages and well covers etc. We can design and manufacture standard steel grating and in customized shapes per client's requirements.

 

1)There are four kinds of stair treads T1,T2,T3,T4.

    T1         Welded fixing and Without nosing

    T2         Bolted fixing and without nosing,easy to installation and teardown.

    T3         Welded fixing and with checkered plate nosing, can be skid.

    T4         Bolted fxing and with checkered plate nosing, easy be installation,

                 teardown and can be skid.

 

 Notes: Stair tread may be of any types of grating,the size may be up to no standard specification
 We recommended :

 Bearing bar pitch is 30,40,60mm.

 Cross bar pitch  is 40,50,60,100mm

 Width :125,155,185,215,245,275,305mm

 

2) Material:
Mild Steel (Low Carbon Steel) or Stainless Steel

3) Surface Treatment:
Untreated, Painting ,Powder coated or Hot dip Galvanizing

4) Steel grating standards:
A) China: YB/T4001-1998
B) USA: ANSI/NAAMM (MBG531-88)
C) UK: BS4592-1987
D) Australia: AS1657-1988
E) Japan: JJS.

 

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

No.	Item	Description
1	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)
2	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)
3	Twisted Cross Bar Pitch	38.1, 50, 60, 76, 80, 100, 101.6, 120mm, 2'' & 4'' etc                            (Mr. David Huang)
4	Material Grade	ASTM A36, A1011, A569, Q235, S275JR, SS304, SS400,  Mild steel & Low carbon steel, etc
5	Surface Treatment	Black, self colour, hot dip galvanized, painted, spray coating              (Mr. David Huang)
6	Grating Style	Plain / Smooth, Serrated /teeth, I bar, serrated I bar                              (Mr. David Huang)
7	Standard	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)