According to Customer's requirement
CE, ISO
Steel Structure Walkway
Tooth Shape
Machine Welding
Carbon Steel
Hot-DIP Galvanized
Global
ASTM A36, Q345, Q235,S235jr
Ce/ISO9001/ISO14000/ISO18000/OHSAS18001
ANSI/Naamm, BS4592, Yb/T4001-2007
Plain/Serrated/I Type
According to Customer's Requirement
Longta
Regular Exporting by Steel Belt
BS, ASTM, GB, YB/T4001 or NAAMM
China
7308900000
Product Description
Hot Dipped Galvanized Steel Grating Panels for Oil Gas Project

Ningbo Jiulong Machinery Manufacturing Co., Ltd (NJMM)
Is one of the leading manufacturers specializing in producing press-welded steel grating in China. Located in the famous port city ---Ningbo.
It has convenient traffic 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.
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 |






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
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.
Our Mission
To provide the top quality products & best services with global expertise;
To build a harmonious environment for employees growing together with the company;
To contribute to the advancement of both industry & society.