2017 New Style Locking System Manhole Cover - Dratnage Pit / Trench Cover – JIULONG

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2017 New Style Locking System Manhole Cover - Dratnage Pit / Trench Cover – JIULONG Detail:

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:

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.

Product detail pictures:

We believe in: Innovation is our soul and spirit. Quality is our life. Customer need is our God for 2017 New Style Locking System Manhole Cover - Dratnage Pit / Trench Cover – JIULONG, The product will supply to all over the world, such as: South Korea, Victoria, Jamaica, Adhering to the management tenet of Managing Sincerely, Winning by Quality, we try our best to provide excellent products and service to our clients. We look forward to making progress together with domestic and international clients.

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This supplier offers high quality but low price products, it is really a nice manufacturer and business partner.

By trameka milhouse from Sao Paulo - 2017.10.27 12:12

We have been cooperated with this company for many years, the company always ensure timely delivery ,good quality and correct number, we are good partners.

By Lydia from Azerbaijan - 2017.08.15 12:36