LAU CHEUNG LEE FOUNDRY CO., LTD.

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Cast Iron Channel Grating

13 thk, 10 slot, 15 rib

20-25 thk, 20 slot, 20 rib

25 thk, 25 slot, 25 rib

40 thk, 25 slot, 25 rib

50 thk, 25 slot, 25 rib

Cast Iron Fixed Channel Grating

Cast Iron Hinged Channel Grating

Cast Iron Square Hole Grating

25-50 thk, 20-25 square hole

25-50 thk, 25 square hole

Cast Iron Square Hole Fixed Grating

Cast Iron Square Hole Hinged Grating

Cast Iron Double Triangular Manhole Cover & Frame

Ductile Iron Double Triangular Manhole Cover & Frame

Cast Iron Double Seal Manhole Cover & Frame

Ductile Iron Double Seal Manhole Cover & Frame

Cast Iron Square Hinged Grating / Cover

Cast Iron Double Triangular Gully Grating & Frame

Compound Material Double Triangular Gully Grating & Frame

Cast Iron Kerb Overflow Weirs

Cast Iron Surface Box

Fire Hydrant Surface Box

Cast Iron Tree Grilles

Tel: 2674 2393 / 2674 6983

Fax: 2674 9375

e-mail: info@LCLFCL.com

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Ductile Iron Double Seal Manhole Cover & Frame Specification

Ductile Iron Double Seal Manhole Cover & Frame Drawing

DS1088 One Piece Ductile Iron Double Seal Manhole Cover & Frame for Foul Water, Medium Duty

DS1088 One Piece Ductile Iron Double Seal Manhole Cover & Frame for Storm Water, Medium Duty

DS1089 One Piece Ductile Iron Double Seal Manhole Cover & Frame for Foul Water, Heavy Duty

DS1089 One Piece Ductile Iron Double Seal Manhole Cover & Frame for Storm Water, Heavy Duty

Ductile Iron Double Seal Manhole Cover & Frame

Features       : Airtight when sealing groove is filled with grease or other suitable
                       compound.

Functions     : Designated to be used in Government roadway drainage projects
                       and maintenance projects.

Applications : For Storm Water (with circumscribed raised stubs on the cover)
                       For Foul Water (with rectangular raised stubs on the cover)

Test Details of Ductile Iron Double Seal Manhole Cover & Frame

Type of manhole cover and frame	Grade	Test requirements
		Diameter of block (mm)	Test load (kN)
Double seal manhole cover & frame (DS1088)	Medium duty	250	125
Double seal manhole cover & frame (DS1089)	Heavy duty	250	250

Drainage Services Department DS Series Standard Drawings
for DS1088, DS1089