Ningbo Lihongyuan Steel Grating Co., Ltd is a leading professional manufacturer of steel grating, stair treads, handrails, trench grating, grating clips, cable trays in China and 75% of grating is regularly exported to USA, AUS, Kuwait, Chile, Singapre, Indonesia, Africa, UK and so on. Our grating always have a good reputation in the world.
Hot DIP galvanized steel grating has three kinds of steel gratings, they are Plain Style Steel Grating, Serrated Style Steel Grating and IÂ Bar Type Steel Grating. They are widely used in steel structure platforms, stair treads, sidewalks, drainages and well covers etc. We can design and manufacture standard steel grating and in customized shapes per client's requirements.
1) Bearing Bar (Load Bar) Specifications (mm):
The specification of plain type and serrated type bearing bar is 20 x 3 to 100 x 10; The specification of I-section type is 25 x 5 x 3, 32 x 5 x 3, 38 x 5 x 3, 40 x 5 x 3, 50 x 5 x 3, 50 x 7 x 4, 55 x 7 x 4, 60 x 7 x 4, 65 x 7 x 4, 70 x 7 x 4, 75 x 7 x 4, etc.
2) Bearing Bar Pitch (center to center):
12.5, 15, 25, 30, 30.16, 32.5, 34, 40, 41.25, 45, 50, 60, 60.32, 80, 100 mm etc, also be according to client's requirement and 30, 40, 60mm are recommended,
America standard is available <1'' x 3/16'', 1 1/4'' x 3/16'', 1-1/2'' x 3/16'', 1'' x 1/4'', 1-1/4'' x 1/4'', 1 1/2'' x 1/4''(19-w-4) and so on. >
3) Cross Bar Pitch (center to center):Â
  38.1, 40, 50, 60, 76, 80, 90, 100, 101.6, 102, 135mm and so on
4) Material:
Mild Steel (Low Carbon Steel) or Stainless Steel
5) Surface Treatment:
Untreated, Painting or Hot DIP Galvanizing
6) Steel grating standards:
A) China: YB/T4001-1998
B) USA: ANSI/NAAMM (MBG531-88)
C) UK: BS4592-1987
D) Australia: AS1657-1985
E) Japan: JJS.
| No. | Item | Detailed Description |
| 1 | Bearing Bar | 25x3, 25x4, 25x4.5, 25x5, 30x3, 30x4, 30x4.5, 30x5, 32x5, 40x5, 50x5, 65x5, 75x6, 75x10---100x10mm etc; IÂ bar: 25x5x3, 30x5x3, 32x5x3, 40x5x3 etc US standard: 1' 'Â x3/16' 'Â , 1Â 1/4' 'Â x3/16' 'Â , 1Â 1/2' 'Â x3/16' 'Â , 1' 'Â x1/4' 'Â , 1Â 1/4' 'Â x1/4' 'Â , 1Â 1/2' 'Â x1/4' 'Â , 1' 'Â x1/8' 'Â , 1Â 1/4' 'Â x1/8' 'Â , 1Â 1/2' 'Â x1/8' 'Â etc |
| 2 | Bearing Bar Pitch | 12.5, 15, 20, 25, 30, 30.16, 30.3, 32.5, 34.3, 35, 38.1, 40, 41.25, 60, 80mm etc US standard: 19-w-4, 15-w-4, 11-w-4, 19-w-2, 15-w-2 etc |
| 3 | Twisted Cross Bar Pitch | 38.1, 40 50, 60, 76, 80, 100, 101.6, 120mm, 2' ' & 4' ' etc                                                   |
| 4 | Steel  Grade | ASTM A36, A1011, A569, Q235, S235JR, S275JR, SS304, Mild steel & Low carbon steel, etc |
| 5 | Surface Treatment | Black, self colour, hot dip galvanized, painted, spray coating   |
| 6 | Grating Style | Plain / Smooth, Serrated /teeth, I bar, serrated I bar                                                         |
| 7 | Grating Standard | China: YB/T 4001.1-2007,   USA: ANSI/NAAMM(MBG531-88), UK: BS4592-1987,   Australia: AS1657-1985, Japan: JIS                                               |
ISO 9001-2008 &Â SGS COMPANY, GRATING SPECIALIST, YOUR GRATING SOLUTIONS! MR. DAVID
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Contact Information:
Sales Director: David Huang
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TEL: 0086 137 57445098
          0086 574 88073967
FAX: 0086 574 88073962
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