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Dratnage Pit / Trench Cover

Short Description:


Product Detail

Product Tags

Dratnage Pit / Trench Cover
1. Grating trench cover used in walkway, carriageway, courtyard or other constructions. Used as cover for drainage trench, wireway, subway, air pit, etc. Hot-dip-galvanizing for surface treatment.
2. Grating trench cover composed by fixed fram & removable grating cover. It can be noted as GT & GU in terms of their different structures.
3. Grating pit cover used in catch basin, sand sediment trap, draining well, & sink hole for road, park & other civil projects. It’s generally designed as the evertile & its start-stop angle is 110°. The grating with pin joint is not only good to guard against theft but also simplify the construction procedure.

?Class of Loading for Drainage Trench/Pit Cover

Class of Load

Fully Laden(kg)

Back Single-wheel Load(KN)

Wheel-pressure Area a×b (mm2)

T-25

25,000

100

200×500

T-20

20,000

80

200×500

T-14

14,000

56

200×500

T-6

6,000

24

200×240

T-2

2,000

8

200×160

Learn Steel Grating

Steel Grating Standard

Steel Material Standard Hot galvanizing Standard
China: YB/T4001.1-2007 China: GB700-2006 China: GB/T13912-2002
U.S.A: ANSI/NAAMM U.S.A: ASTM(A36) U.S.A: ASTM(A123)
U.K: BS4592 U.K: BS4360(43A) U.K: BS729
Australia: AS1657 Australia: AS3679 Australia: AS1650

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1. Bearing bar pitches may be 12.5 to 15, 20, 30,32.5,34.3, 40,60mm,of which 30mm & 40mm are recommended.?
2. Cross bar pitches may be 38,50,60, to 100mm, of which 50mm & 100mm are recommended.?
3. Sign of the shape of bearing bars. F – Plain style (may be omitted in the symbol of steel grating); S – Serrated style; I – I-shape style?
4. Sign of surface treatment. G – Hot galvanizing (may be omitted in the symbol of steel grating); P – Painted; U – untreated

 

FIELDS OF APPLICATION :
1. Light chemical industry/Petro-chemistry/Machinery industry/Textile chemistry/Port engineering
2.Oil and grease chemistry/Agriculture husbandry/Horticulture/Steel industry/Waste disposale
3.Food processing/Aquatic breeding/Fertiliazer industry/Phamaceutical industry/Parking lots
4.Cement plants/Oil refinery/Mining and refinery/Power plants/Public utilties
5.Marine engineering/Shipbuilding/Construction material industry/Defense projects/Airport projects
6.Water plants/Sewage disposal/Paper and pulp industry/Construction industry/Transportation industry/Automotive industry
COMMON USES OF GRATING :
Flooring??Catwalks??Mezzanines/decking??Stair tread??Fencing
Vault bin floors??Ramps??Docks??Trench covers??Window and machinery safe guards?
Entilation screens??Storage racks??Suspended ceiling??Drainage pit cover??Wash racks??

Type of Steel Grating

Comparison of Feature:

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Plain:One of the most widely used grating, available for flooring, sidewalk, dranage pit cover, stair tread, etc.

Serrated:Better non-skid property & safety comparing to plain grating.

I-shape:Lighter, more economical and practical comparing to plain grating.

TIM20180920172336


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