CWF - Chung Wing Iron Works trademarkChung Wing Iron Works (International) Ltd.
 
 


 
 

  

 

Road and Highway Construction Products

Manhole Covers, Surface Box, Gully Gratings, Kerb Overflow Weirs, Manhole Steps


 
 
 
 

cast iron manhole cover

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CWF - Chung Wing Iron Works trademarkChung Wing Iron Works (International) Ltd.

 

Ductile Iron Double Triangular Manhole Cover & Frame

 

Standard Double Triangular Manhole Cover






 

 

 

 

 



 

All dimensions in mm

Clear Opening

a

b

c

Grade

675 dia. (ref. DS1077A)

875

875

150

Heavy Duty

 

Ductile Iron Double Seal Manhole Cover & Frame

 

Standard Double Seal Manhole Cover

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

All dimensions in mm

Clear Opening

a

b

c

Grade

675 dia. (ref. DS1088)

1005

1005

88

Light Duty

675 dia. (ref. DS1089)

1035

1035

102

Medium Duty

675 dia.

1035

1035

150

Heavy Duty

 

 

 

 

 

 

 

 

 

CWF - Chung Wing Iron Works trademarkChung Wing Iron Works (International) Ltd.

 

Cast Iron Double Triangular Manhole Cover & Frame

Standard Double Triangular Manhole Cover


cast iron standard double triangular manhole cover
All dimensions in mm

Clear Opening

a

b

c

Grade

550 dia. (ref. DS1033)

750

750

125

Medium Duty

550 dia. (ref. DS1033)

800

800

150 

Heavy Duty

675 dia.

950

950

150

Heavy Duty

 


Water Supplies Department Double Triangular Manhole Cover & Frame


Cast Iron Water Supplies Department Double Triangular Manhole Cover & Frame
All dimensions in mm

Clear Opening

a

b

c

Grade

600 dia. (ref. WSD 7.29)

850

850

150

Heavy Duty

 

 

 

 

 


CWF - Chung Wing Iron Works trademarkChung Wing Iron Works (International) Ltd.

 

Standard Desilting Double Triangular Manhole Covers
Cast Iron Standard Desilting Double Triangular Manhole Covers
All dimensions in mm

Clear Opening

a

b

c

Grade

900 x 750 (ref. DS1034)

1154

1000

165

Heavy Duty


Cast Iron Double Seal Manhole Covers & Frames

Standard Double Seal Light Duty Manhole Covers
Cast Iron Standard Double Seal Light Duty Manhole Covers
All dimensions in mm

Clear Opening

a

b

c

290 x 290 Type MC2-29/29A (ref. DS1037)

460

460

45

450 x 450 Type MC2-45/45A (ref. DS1038)

620

620

45

550 x 550

720

720

45

 

 

 

 

 


CWF - Chung Wing Iron Works trademarkChung Wing Iron Works (International) Ltd.

 

Standard Double Seal Medium & Heavy Manhole Covers
Cast Iron Standard Double Seal Medium & Heavy Manhole Covers
All dimensions in mm

Clear Opening

a

b

c

Grade

290 x 290 Type MA2-29/29A (ref. DS1035) 

640

640

100

Heavy Duty

450 x 450

810

810

100

Medium Duty

450 x 450 Type MA2-45/45A (ref. DS1036)

810

810

100

Heavy Duty

550 x 550

910

910

100

Medium Duty

550 x 550

910

910

100

Heavy Duty

550 x 550

910

910

125

Medium Duty

550 x 550

910

910

150

Heavy Duty

600 x 600

900

900

100

Heavy Duty

 


Double Seal 550x550mm Clear Opening x 75mm Frame Height Manhole Covers
Cast Iron Double Seal 550x550 Clear Opening x 75 Frame Height Manhole Covers
All dimensions in mm

Clear Opening

a

b

c

550 x 550

810

810

75

 

 

 

 



 

CWF - Chung Wing Iron Works trademarkChung Wing Iron Works (International) Ltd.

 

Double Seal Large Draw Pit Covers


Cast Iron Double Seal Large Draw Pit Cable Cover and Frame
All dimensions in mm

Clear Opening

a

b

c

Marking

Grade

800 x 600

1086

886

100

800X600X100

Medium Duty

800 x 700

1086

986

150

800X700X100

Heavy Duty

900 x 700

1186

986

150

900X700X100

Heavy Duty

900 x 750

1186

1036

100

900X750X100

Medium Duty

900 x 750

1186

1036

150

900X750X150

Heavy Duty

 

Cast Iron Double Seal Recessed Manhole Covers & Frames


Double Seal Recessed Covers (Type 1)
Cast Iron Double Seal Recessed Manhole Cover and Frame (Type 1)
All dimensions in mm

Clear Opening

a

b

c

d

Marking

Grade

550 x 550

900

900

125

70

550-125

Medium Duty

550 x 550

900

900

150

80

550-150

Heavy Duty

550 x 550

900

900

195

125

550-195

Heavy Duty

900 x 750

1245

1100

150

60

900X750X150

Heavy Duty

900 x 750

1245

1100

195

125

900X750X195

Heavy Duty

 

 

 

CWF - Chung Wing Iron Works trademarkChung Wing Iron Works (International) Ltd.

 

Double Seal Recessed Covers (Type 2)
Cast Iron Double Seal Recessed Manhole Cover and Frame - Type 2
All dimensions in mm

Clear Opening

a

b

c

d

Grade

550 dia./550 x 550

800

800

75

37

Light Duty

550 dia./550 x 550

800

800

100

75

Medium Duty

550 dia./550 x 550

850

850

150

85

Heavy Duty


Cast Iron Surface Boxes


Water Supplies Department Surface Box 


300mm Square Surface Box Cover
Cast Iron Water Supplies Department 300mm Square Surface Box Cover
All dimensions in mm

Specification

A

B

C

C.I. 300 Square Surface Cover (Ref. WSD 7.27) 

410

410

150

 



 

CWF - Chung Wing Iron Works trademarkChung Wing Iron Works (International) Ltd.

 

Surface Box and Grating Cover with Hinge

Cast Iron Surface Box and Grating Cover with Hinge 1

All dimensions in mm

Specifications:

A

B

F

H

220x210x68

300

247x247

220x210

68

300x300x110

400

354x344

300x300

110


Cast Iron Surface Box and Grating Cover with Hinge 2

All dimensions in mm

Specifications:

A

B

H

100x100x24

145

100

24

150x150x30

215

150

30

150x150x46

215

150

46

200x200x36

270

200

36

200x200x53

280

200

53

200x200x75

280

200

75

225x225x38

290

225

38

225x225x75

300

225

75

300x300x53

370

300

53

300x300x75

420

300

75

450x450x100

570

450

100

 



 

CWF - Chung Wing Iron Works trademarkChung Wing Iron Works (International) Ltd.

 

Double Seal Surface Box Secured by Four Screws
Cast Iron Surface Box Covers with Four Screws
All dimensions in mm

Specifications:

A

B

F

H

150x150x33

215

150

82x82

33

225x225x40

290

225

143x143

40

300x300x52

365

300

200x200

52

 


Gully Grating Covers

 

GA1-450 Double Triangular Gully Grating Covers

GA2-325 Hinged Gully Grating Cover

GA2-325 Cast Iron Hinged Gully Grating Cover

All dimensions in mm

Specifications:

Frame Height

GA1-450, 517x432 C.I. Double Triangular Gully Grating with Deep Frame (ref. H3117, H3118B)

100

GA1-450, 517x432 C.I. Double Triangular Gully Grating with Shallow Frame (ref. H3116, H3118B)

85

GA2-325 Gully Grating (ref. H3119, H3120)

75

 

 



 

 

 

CWF - Chung Wing Iron Works trademarkChung Wing Iron Works (International) Ltd.

 

Kerb Overflow Weirs


Type K1-450H / Type 3-450


Type K1-450V

K1-450H Cast Iron Kerb Overflow Weirs

Type K1-450V Cast Iron Kerb Overflow Weirs


Manhole Step Iron

BS1247 Galvanized Malleable Cast Iron Manhole Step Iron

 


Stainless Steel Manhole Step


Stainless Steel Manhole Step Iron

(cast iron, and galvenized cast iron manhole step iron is also available)


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Homepage: http://www.chungwing.com/index.html          Contact: http://www.chungwing.com/contact.html
Address: Ground Floor, 12 Beech Street, Tai Kok Tsui, Kowloon, Hong Kong
Tel: (852)2392 2580, 2392 9050        Fax: (852)2787 2933


copyright 2005, Chung Wing Iron Works (International) Ltd.