Sealed Pickproof Drain Cover, Trench Grating Cover for Walkway
Ningbo Jiulong Machinery Manufacturing Co., Ltd is the second largest steel grating manufacturer in China. We have 7 running lines with yearly capacity of 50, 000tons. Jiulong grating has exported to more than 30 countries. Choose Jiulong grating is your right decision!
Ningbo Jiulong MachineryManufacturing Co., Ltd (NJMM) is a leading manufacturer specialized in producing press-welded steel grating. Its production scale, product type, and export volume are all at the top class in China. Located in the famous port city ---Ningbo, it has convenient transportation and superior location with only 30-minute drive to Ningbo Lishe International Airport and only 25-minute drive to Ningbo Port---the famous international sea port with the advantage of non-silting, deep-water and ice-free all year round.
Founded in 1992, covering an area of 25,000 square meters and with workshop area of 18,000 square meters, NJMM has advanced equipments, full-fledged technology as well as rich manufacturing and management experience in press-welded steel grating area for many years. NJMM is among the few leading manufacturers who have the entire production process from bearing bar to galvanized steel grating. Now NJMM has owned six International advanced auto-pressed welding machines, and the annual production capacity of steel grating, stair tread, trench cover, stanchion and guardrail is over 100,000 tons, of which more than 50,000 tons are for export. NJMM markets its products mainly in North America, South America, Europe, Oceania, Middle East , Southeast Asia, etc. Its marketing and service scope has covered all provinces in China and Longta gratings are widely applied to lots of renowned projects at home and abroad, such as sightseeing walkway of Sydney port, Chunxiao oil-gas filed of East China Sea, and Hangzhou bay bridge.
Being an advanced unit of environmental protection, NJMM had got the ISO 9001-2000 Quality Management System Certificate in the year 2001 and received government quality prize of Zhenhai district in the year 2007. With integral quality control system and complete inspection facility, NJMM can provide high-quality products for customers. NJMM always persists the idea of expanding scale to reduce the cost and striving for development with quality these years. Owing to superior location and as the leading role played in steel grating area in China, NJMM sincerely promises to all customers at home and abroad, "we will try our best to satisfy our customers with top quality, good service, most competitive price and fast delivery "
Product information:
This well cover is widely used in city construction projects due to its seal ability. Its frame is made up of angle steel, and tightly joined with the steel grating through the hinge. The checkered plate welded with the steel grating has the seal ability.
| 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 |
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: 7 press-welding machines
Management System: ISO9001: 2008
Certifications: CE/ISO9001/ OHSAS18001/ISO14001/ISO18000
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.
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