Gold Member Since 2011
Audited Supplier
Nanjing OTER Steel Gratings Manufacturing Co., Ltd.

Steel Grating, Grating, Steel Grid manufacturer / supplier in China, offering Untreated Black Steel Grid, Hot Dipped Galvanized Steel Frame Lattice, Hot DIP Galvanized Stair Tread and so on.

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Supplier Homepage Product steel grating Untreated Black Steel Grid

Untreated Black Steel Grid

Purchase Qty.:
(Tons)
1-9 10-19 20+
FOB Unit Price: US $870 US $860 US $850
Purchase Qty. (Tons) FOB Unit Price
1-9 US $870
10-19 US $860
20+ US $850
Get Latest Price
Production Capacity: 20, 000 Tns/Year
Transport Package: Normal Export Packing or Customerized
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: As customer′s request
  • Application: Steel Structure Walkway, Foot Pedal, Drain Cover
  • Manufacturing Method: Machine Welding
  • Safety: Anti-Skid
  • Maintenance: Maintenance-Free
  • Ventilation: Excellent
  • Certificate: CE, GOST, ISO 9001, ISO 14001, Hse
  • Galvanization Standard: GB/T13912, ASTM (A123), BS729
  • Specification: As request from customers
  • HS Code: 7389000000
  • Certification: CE, GOST-R, Hse, ISO
  • Shape: Tooth Shape
  • Material: Carbon Steel
  • Property: Good Rust-Proof
  • Life Expection: Durable
  • Color: Black
  • Material Standard: Low Carbon Steel (Cn: Q235, Us: A36, UK: 43A)
  • Trademark: OTER
  • Origin: China
Product Description
1. Components of steel grating:
Untreated Black Steel Grid
2. Four types of bearing bars: I type, plain type, serrated I type, serrated type. 
Untreated Black Steel Grid
3. Process of production: Nanjing OTER steel grating is made by carbon or mild steel of certain sizes through the processing of slit cutting, serration-making, press welding, inspecting before galvanization, galvanizing, checking before packing, etc. Hot-dipped galvanizing can give a hygienic and clean maintenance free bright finish. 

4. Features: 
Specifications of steel gratings
NoItemDescription
1Bearing bar20X5, 25X3, 25X4, 25X5, 30X3, 30X4, 30X5, 32X3, 32X5, 40X5, 50X4...75X8mm, etc. 
2Bearing bar pitch20, 25, 30, 32.5, 34.3, 40, 50, 60, 62, 65mm
3Cross bar5X5, 6X6, 8X8mm (twisted bar or round bar)
4Cross bar pitch40, 50, 60, 65, 76, 100, 101.6, 120, 130mm or as customers’ requirement. 
5Surface treatmentUntreated, hot DIP galvanized, cold DIP galvanized, painted, powder coated, or as customers’ requirement. 
6Flat bar typePlain, Serrated (tooth-like), I bar (I section)
7Material standardMild carbon steel (CN: Q235, US: A36, UK: 43A)
8Galvanization standardCN: GB/T13912, US: ASTM (A123), UK: BS729
9Steel grating standardsA. China: YB/T4001-1998
B. USA: ANSI/NAAMM (MBG 531-88)
C. UK: BS4592-1987
D. Australia: AS1657-1988
E: Japan: JJS

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Mr. Zhang Xianzhe
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