Covers & Frames. Ductile Iron. Manhole Covers. Frames. Specification SANS : Value, Performance & Quality PROUDLY SUPPLIED BY
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1 Covers & Frames Ductile Iron Manhole Covers & Frames Specification SANS : 1994 Value, Performance & Quality DPI Trading PROUDLY SUPPLIED BY
2 Mechanical Properties A) THE DIFFERENCE BETWEEN DUCTILE AND GREY CAST IRON CAST IRON Ductile Iron has a higher breakage safety coefficient, since it follows any deformation due to loads without breaking (unlike cast iron), the returning to the original condition after stress. Cast Iron is made up of thousands of plates which interrupt the continuity of the metal matrix and consequently jeopardise its mechanical resistance and make it subject to possible cracking or braking. Ductile Iron is made up of spheroids achieved by introducing a suitable quantity of magnesium into the bath before the casting. This gives the product a high breading load as well as remarkable elasticity B) THE BENEFITS OF Elasticity 270 Mpa Tensile Strength 420 Mpa High Elongation > 10% Ductile Iron The Ductile Iron high strength to weight ratio allows for the production of light weight castings that offer what can amount to a 50% weight saving over traditional cast iron to achieve improved strength Description Materials covered Loading Class SANS 558 (Grey Iron) Cast Iron surface boxes and manhole inspection covers and frames Grey Cast Iron only HD = Heavy duty 135 Kn MD = Medium duty 40 Kn LD = Light duty 7 Kn SABS MARKS SABS 558 & SABS EN 124 comparison SANS (Ductile Iron) Gully tops and manhole tops for vehicular and pedestrian areas- Designed requirements, type testing, marking, quality control Spheriodal Graphic cast iron (Ductile Iron), Flake Graphite cast iron (Grey Iron): Cast Steel or any other material that meet the relevant requirements A 15 = 15Kn B125 = 125Kn C250 = 250Kn D400 = 400Kn E600 = 600Kn F900 = 900Kn Loading Class Table ( SANS 50124) Pedestrian Cyclist Sidewalks Walk Ways Car Parks Roadways Parking 1
3 747,2mm TYPE 2A SNAP LOCK COVER & FRAME CLASS D Kn 2A D Kn Type 2A Ductile Iron Snap Lock Cover & Frame M60 D400 SABS EN124 ø649mm 100mm ø610mm ø612mm0 A-A 2
4 TYPE 2A & 2B ROTATING WEDGE LOCK COVER & FRAME CLASS D Kn 2A D Kn Type 2A Ductile Iron Rotating Wegde Lock Cover & Frame 2B D Kn Type 2B Ductile Iron Rotating Wegde Lock Cover & Frame LOCK OPEN SG EN124-SABS-D400 2A EN124-SABS-D400 GJ PATENT 2002/8321 LOCK OPEN SG EN124-SABS-D400 2A EN124-SABS-D400 GJ PATENT 2002/8321 Stopper for Lift Location 624mm dia Cover 550mm dia Daylight opening 115mm 646mm dia Section showing Cover in Frame 4 Lugs on cover underside rotate anti-clockwise to engage with wedge and lock. To lift Cover out of frame, Cover is rotated clockwise to stopper at cut out. Lug then lifts out through cut out. Section showing Locking Wedge 3 The Cover and Frame become an integral unit when locked. Ensures no rocking or dislodging, as well as water tight.
5 TYPE 3A COVER & FRAME & TYPE 3B COVER & FRAME CLASS B Kn 3A B Kn Type 3A Ductile Iron Cover & Frame 3B B Kn Type 3B Ductile Iron Cover & Frame 121mm Covers 230mm Type 3B 305mm Type 3A Staple Staple Chain Conical Frame c 230mm 310mm TYPE 5 COVER & FRAME CLASS B Kn B Kn Type 5 Ductile Iron Cover & Frame Frame Cover EN124-B x 325mm + 1/-0 Cover Frame Chain fixed to Cover and Frame 152mm 380 x 305mm daylight opening 533 x 458mm 4
6 25Kg DOMESTIC COVER & FRAME CLASS A15-15Kn 25Kg A15 15Kn 25kg Domestic Ductile Iron Cover & Frame En124 A15 SABS M60.45 G J DOMESTIC SG IRON 600 X 450mm a COVER 647mm 30mm e d 2/ Chains C-Daylight Opening FRAME Type 9A COVER & FRAME CLASS B Kn 9A B Kn Type 9A Ductile Iron Cover & Frame M 60 x 60 GJ En124 B125 56mm e d b 686mm COVER FRAME 2/ Chains C-Daylight Opening 600mm 5
7 Type 9D COVER & FRAME CLASS B Kn 9D B Kn Type 9D Ductile Iron Cover & Frame GJ M60 x 45 EN124 B mm SG a COVER 686mm 686mm 56mm e d FRAME C-Daylight Opening 2/ Chains Type 8 HINGED GRATE & FRAME CLASS C Kn C Kn Table 8 Ductile Iron Hinged Grate & Frame 641mm Frame Grate 597mm Frame 506mm 6 EN mm Grate C250
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Covers & Frames. DPI Trading. Ductile Iron. Manhole Covers. Frames. Specification SANS : Value, Performance & Quality PROUDLY SUPPLIED BY
Covers & Frames Ductile Iron Manhole Covers & Frames Specification SANS 50124 : 1994 Value, Performance & Quality DPI Trading PROUDLY SUPPLIED BY www.dpitrading.co.za www.incledon.co.za Mechanical Properties
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