Galvanized Theftproof Grating Trench Cover well Cover with Ce Approval
Grating trench cover used in walkway, carriageway, courtyard or other constructions. They are used as cover for drainage trench, wireway, subway, air pit,etc.
Grating trench cover is composed of fixed frame & removeable grating cover.
Standards
The products come from our factory comply to international standards:
| Country |
Bar Grating Standard |
Steel |
Hot-dip Galvanizing |
| P.R.China |
YB/T 4001.1-2019 |
GB/T700-2006 |
GB/T13912-2002 |
| U.S.America |
ANSI NAAMM MBG 531-00 |
ASTM (A36) |
ASTM A123 |
| U.K.British |
BS 4592-1987 |
BS4360(43A) |
BS729 |
| Australia |
AS 1657-1985 |
AS3697 |
AS 1650 |
| Europe |
EN 1090 |
EN 10025:1993 |
EN ISO 1461-1999 |
| No |
Item |
Description |
| 1 |
Bearing bar |
25x3,25x4,30x3,30x4,30x5,32x5,40x5,50x5,.....75x10mm |
| 2 |
Bear bar pitch |
12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3, 34.3, 35, 40,41,60mm. US standard: 1"x3/16", 1 1/4"x3/16", 1 1/2"x3/16", 1"x 1/4", 1 1/4"x 1/4", 1 1/2"x 1/4" etc. |
| 3 |
Cross bar pitch |
38,50,76,100,101.6mm |
| 4 |
Material |
Q235,A36,SS304 |
| 5 |
Surface treatment |
Black, hot dipped galvanising, paint |
| 6 |
Standard |
China: YB/T 4001.1-2007 |
| USA: ANSI/NAAMM(MBG531-88) |
| UK: BS4592-1987 |
| Australia: AS1657-1985 |
Appliacation:
Why Choose us(NJMM):
Establish Year: 1992
History in this field: 27 years
Main Products:
A. Steel Grating, including plain and serrated steel graing, size and specification can be produced according to customer's requirements.
B. Stair Tread: There are 8 types of treads distinguished by different nosing & way of installation.
C. Drainage Pit/Trench Cover
D. Railing & Stanchion
Total Staff: About 300, including 50 managers, 10 technical engineers.
Total Area: 25, 000 square meters and with workshop area of 18, 000 square meters.
Main Equipment: 8 press-welding machines
Management System: ISO9001: 2008
Advantage: High quality, Professional engineer, and Large production Capability
Brand: Long Ta
Honor: The largest steel grating manufacturer in China with government quality prize of Zhenhai district in the year 2007
NJMM is now supply to more than 30 countries and enjoying high reputation among all of our customers.
We will try our best to satisfy our customers with top quality, good service and most competitive price.
1. What standard can NJMM's steel grating meet?
Re: NJMM can fabricate steel grating according to the standards in different counties, such as China: YB/T4001.1-2007, USA: ANSI/NAAMM (MBG531), UK: BS4592 and so on.
2. What specification of steel grating can NJMM fabricate?
Re: NJMM can fabricate any specification of steel grating available, both in inch description and metric description.
3. What are the most commonly stocked panel sizes?
Re: The most common standard panel sizes are 3'X24',3'X20', 1000X6000mm, 1000X6100mm etc.
4. What are the most commonly stocked bar sizes? (Height and thickness)
Re: The most common bars are 1''x1/8'', 1''x3/16'', 1''x3/16'', 1''x3/16'', and 25x3, 30x3, 32x3, 25x5, 32x5, 35x5, 38x5 etc.
5. What is the difference between serrated and non-serrated bar grating?
Re: Serration is done for slip resistance. It is grating which has the top surfaces of the bearing bars notched.
6. What finishes are offered on bar grating?
Re: Bar grating comes in untreated, painted, hot dip galvanized.
7. Does NJMM do OEM?
Re: Yes.
8. How to contact us?
Re: Send your more inquiry details as below, and click " send " now.
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