Complaint
Industrial Flooring Hot Dipped Galvanized Steel Grating of Flat Serrated Load Bearing Bar for oil and gas Industry
Pressure Welded bar grating is forge-welded, a system in which NJMM was a pioneer. In this process the bearing bars and cross rods are permanently forged together by heat and pressure into a single unit construction, resulting in greater strength per pound than mechanical assembly methods.
The twisted cross rods provide a non-slip walking surface. For applications where extremely slippery conditions prevail, Serrated bar grating offers a superior grip surface to the load bearing bars.
Bar grating types are specified by bearing bar spacing followed by cross rod spacing.
Constructed from a series of flat load bearing bars, either 3, 4, 5 and 6mm thick at 17, 20.5, 25, 30, 34, and 41mm centers,
to which traverse bar sections are electro-forge - welded into the top surface. Available with 5,6 & 8mm crossrods
Constucted from a series of flat load bearing bars, either 3, 4, 5 and 6mm thick at 17, 20.5, 25, 30, 34, and 41mm center
| Item No. | Bearing bar pitch | Cross bar pitch | specification of bearing bar(width*thickness) | |||||
| 20*3 | 25*3 | 32*3 | 40*3 | 20*5 | 25*5 | |||
| 1 | 30 | 100 | JG203/30/100 | JG253/30/100 | JG323/30/100 | JG403/30/100 | JG205/30/100 | JG255/30/100 |
| 50 | JG203/30/50 | JG253/30/50 | JG323/30/50 | JG403/30/50 | JG205/30/50 | JG255/30/50 | ||
| 2 | 40 | 100 | JG203/40/100 | JG253/40/100 | JG323/40/100 | JG403/40/100 | JG205/40/100 | JG255/40/100 |
| 50 | JG203/40/50 | JG253/40/50 | JG323/40/50 | JG403/40/50 | JG205/40/50 | JG255/40/50 | ||
| 3 | 60 | 50 | JG203/60/50 | JG253/60/50 | JG323/60/50 | JG403/60/50 | JG205/60/50 | JG255/60/50 |
| Standard | 1.China: YB/T4001-1998; |
| 2.USA:ANSI/NAAMM(MBG531-88) | |
| 3.UK:BS4592-1987 | |
| 4.Australia:AS1657-1985; | |
| 5.Japan:JIS | |
| Material | Q235,A36,SS304 |
| Bearing bar | 1.plain&serrated type:20x3 to 100x3mm |
| 2.I-section type:(25,32,38,40,50)x5x3; | |
| (50,55,60,65,70,75)x7x4,etc | |
| Surface treatment | untreated, painting or hot dip galvanizing |
| Grating type | 1.Plain style steel grating; |
| 2.serrated style steel grating; | |
| 3.I bar type steel grating. | |
| Application Fields | 1.steel structure platforms; |
| 2.stair treads,sidewalks; | |
| 3.drainages; | |
| 4.well covers. | |
| Advantages | 1.Low cost for molding or tooling; |
| 2.Advanced &standardization workshops and facilitates; | |
| 3.High-tech and high precision manufacturing equipment; | |
| 4.Strict ISO 14001:2004,ISO9001:2008 standards; | |
| 5.ROHS compliant & environment friendly products; | |
| 6.Professional technical specialists and management personnel; | |
| 7.100%in house inspection before delivery; | |
| 8.All OEM/EDM is acceptable. |
1. Grating must be installed with both ends being placed on supporting base like flange beam, steel channel.
2. There are four types of grating fasteners available.
Ningbo Jiulong Machinery Manufacturing Co.,Ltd(NJMM) is one of the leading manufacturers specialized 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 Leshe International Airport and only 25-minute drive to Ningbo Port.
Founded in 1992, covering an area of 2500 square meters and with workshop area of 18000 square meters, NJMM has advanced equipment, full-fledged technology as well as rich manufacturing and management experience in press-welded steel bar grating field nearly 20 years. NJMM is among the few leading manufacturers who have the entire production process from bearing bar to galvanized steel grating. Nowadays, NJMM, in the area of steel grating and related products, owns the largest scale, has the most product varieties, possess the most powerful capability and achieves the largest export volume in China. The annual production capacity of steel grating, stair tread, trench cover, stanchion and scaffold is over 70000 tons, of which more than 4000 tons are for export.
