Gnee Steel (tianjin) Co., Ltd
                                                                                                           
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Since 2006
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High Quality Steel Grating Cover for Polymer Channel Drain Heavy Duty Grating Trench Drain Cover

Price Negotiable
Price: Negotiable
MOQ: 10 square meter
Delivery Time: 5-9 working days
Brand: GNEE
Product Description
High Quality Steel Grating Cover for Polymer Channel Drain Heavy Duty Grating Trench Drain Cover
Steel bar grating trench covers are used in sidewalks, driveways, courtyards or the ground of buildings as cover plates for gutters, pipeline trenches, underground passages, air shafts, light wells, inspection wells or shafts and so on.

The steel grating trench cover usually consists of a fixed frame and a movable steel grating panels as the cover plate. The steel grating trench cover can be equipped with fastening devices or anti-theft devices.
Steel grating cover installed in a concrete surface Close-up view of steel grating cover showing bar pattern
Product Specifications
Code Internal Dimension L*W*D(mm) Outside Dimension L*W*H(mm)
100-Z01-C1000×100×571000×130×75
100-Z02-C1000×100×1101000×130×130
100-Z03-C1000×100×1701000×130×190
100-Z04-C1000×100×2301000×130×255
100-Z02-D1000×100×1101000×130×150
100-Z03-D1000×100×1701000×130×210
100-Z04-D1000×100×2301000×130×270
150-Z01-C1000×150×1201000×190×140
150-Z02-C1000×150×1801000×190×200
150-Z03-C1000×150×2401000×190×260
150-Z01-D1000×150×1401000×198×160
150-Z02-D1000×150×2001000×198×220
150-Z03-D1000×150×2601000×198×280
150-Z01-E1000×150×1401000×198×160
150-Z02-E1000×150×2001000×198×220
150-Z03-E1000×150×2601000×198×280
200-Z01-D1000×200×2001000×240×225
200-Z02-D1000×200×2601000×240×285
200-Z01-E1000×200×2001000×248×225
200-Z03-E1000×200×2601000×248×285
250-Z02-D1000×250×3001000×310×335
250-Z02-E1000×250×3001000×310×335
300-Z01-D1000×305×2501000×365×280
300-Z01-E1000×305×2501000×365×280
300-Z02-D1000×305×3101000×365×345
Steel grating cover in industrial setting
Manufacturing Process
  1. Materials Preparation: Ready bearing bars and cross bars properly for Step 2.
  2. Bearing Bars Placement: Place bearing bars into a work-holding device that is suitable for holding bearing bars in place.
  3. Pressure Welding: This step involves cold pressing of cross bars into bearing bars at high pressure and resistance welding of the bar materials under great pressure at high temperature.
  4. Flush Trimming for Edges: Flush trimming is designed to remove the excessive portion of cross bars that extends beyond the edges of the grating panel.
  5. Cutting to Size and Shape: Cut to size and shape in strict accordance with the desirable dimensions and shapes provided for by the working drawings of the buyer.
  6. Banding for Open Ends: Banding is a welding process that closes open ends of bearing bars, and the line of cutouts if any, of the grating panel.
  7. Hot Dip Galvanizing: Once the banding process is complete, the grating panels should be finished by using the hot dip galvanizing process. The zinc coating thickness is usually 65 μm or above, which is enough to resist corrosion for 15-30 years in harsh conditions.
Steel grating manufacturing process Finished steel grating products in warehouse

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Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Gnee Steel (tianjin) Co., Ltd
Location No.4-1114, Beichen Building, Beicang Town, Beichen District, Tianjin, China
Contact Person Zhang

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