Complaint
Heavy Duty Welded Steel Bar Grating Hot Dipped Galvanizing Finish Flat Load Bearing Bar for Oil and Gas Industry
Heavy-duty welded steel grating is manufactured by fusing bearing bars and cross bars together at high temperatures to form a permanent joint. This type of grating utilizes deeper and thicker bearing bars to provide greater durability, strength and rigidity than light-duty grating options. Available material types include economical carbon steel and corrosion-resistant stainless steel
Designed to carry heavy rolling loads and maintain the same level of performance over many years of use, heavy-duty welded steel grating is ideal for a variety of applications. Common uses include airfield landing mats, highway bridge decking, ventilation grills, curb inlet grates, ramps, docks, sidewalks, concrete reinforcements, vault covers, industrial flooring, trenches, marine platforms and paper mills
Heavy Duty Grating is available in bearing bar sizes ranging from 1" to 6" (25mm ~150mm )depths and thicknesses of 1/4", 5/16", 3/8", and 1/2" (6mm,8mm,10mm,12mm). Typical applications include: vehicular trenches, vehicular sump pits, forklift traffic, air fields, bridges, plant floors, loading docks, and other areas with trucks, vehicles, or forklift traffic. Surface options are smooth or serrated. Available finishes include mill, painted black, or hot dipped galvanized.
Bar grating types are specified by bearing bar spacing followed by cross rod spacing.
| 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 end being placed on supporting base like flange beam, steel channel.
2. There are four types of grating fastener 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.
