SPECIFICATIONS AND ACKNOLEDGEMENT FOR THE PURCHASE OF SNOW PLOW CUTTING EDGES – CARBIDE TIPPED. THIS ‘BID COMPLIANCE’ QUESTIONNAIRE MUST BE COMPLETED THOROUGHLY, ACCURATELY AND SUBMITTED WITH BID. ANY “NO” RESPONSES MUST INCLUDE A WRITTEN EXPLANATION IN DETAIL AND ATTACHED TO THIS DOCUMENTED. 1.
SCOPE AND CLASSIFICATION A.
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BRAND NAMES A.
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It is the intent of this specification to describe the minimum requirements for SNOW PLOW CUTTING EDGES – CARBIDE TIPPED for Milwaukee County.
REFERENCES: If articles have been identified in the bid by a “brand Name” and model number, such reference is intended to be descriptive but not restrictive. It is for the sole purpose of indicating to the prospective bidders a description of articles that will be satisfactory. Other items of meeting specifications will be accepted.
TECHNICAL SPECIFICATIONS: All features below shall be incorporated in the proposed cutting edges. Acceptable products are as follows, all others shall be equal to, or exceed specifications outlined below. If the bidder is submitting alternatives, the bidder shall identify per submission instructions. A sample of any alternative item will be required, only of the low bidder, prior to award. Any alternative(s) offered shall be subject to a determination of equivalency, performed solely by Milwaukee County. Winter Equipment CB3031522 (3’ long blades) Valley Blades 34636WPTSB-112TP (3’ long blades) Make/Model BID__________________________________
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Winter Equipment CB3041522 (4’ long blades) Valley Blades 34636WPTSB-112TP (4’ long blades) Make/Model BID__________________________________ BLADE MATERIAL: 1. The blade shall be flat hot-rolled finished steel to meet or exceed specifications for ASTM A36 Structural Grade hot rolled flat steel.
Bid Compliance
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2. Dimensions: 36”x 6”x 3/4” and 48” x 6” x 3/4” Bid Compliance
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3. Holes: All blade holes shall be 11/16” diameter countersunk holes, either drilled or punched. Number and location of holes shall be as follows – 36” blade – 3-3--12-3-3” hole spacing and shall be 1 1/2” from top of the blade. 48” blade – 3-3--12-12-3-3” hole spacing and shall be 1 1/2" from top of the blade.
Bid Compliance
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4. Carbide Groove: The groove for the carbide inserts shall be milled in the center of the blade edge. The groove shall be in line within 1/32” of established center line.
Bid Compliance
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TUNGSTEN CARBIDE INSERT: A. TUNGSTEN CARBIDE INSERT: 1. Virgin (new) tungsten carbide. The inserts shall be of a high grade tungsten carbide and not be from recycled carbide. Bid Compliance
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2. Inserts shall be a trapezoid design. Bid Compliance 3. Cobalt Content: Must be minimum of 11%. Bid Compliance
4. Tungsten Content: Must be minimum of 88% with all other constituent contents 1% maximum. Bid Compliance
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5. Specific Gravity / Density: Must be minimum of 14.3 gm/cc. Bid Compliance
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6. Hardness: Must be minimum of 87.5 Rockwell A scale. Bid Compliance
8. Grain Size, as determined by ASTM B390-92(2006), 10M/10C and 15% or less of samples have no large voids or “void clusters” when viewed under 200x microscope. Bid Compliance Yes___ No___ 9. Bottom Angle: 25° Bid Compliance
C. TUNGSTEN CARBIDE INSERT ATTACHMENT 1. The tungsten carbide inserts shall be placed throughout the entire length of the cutting edge, positioned in the milled groove with approximately 0.010” between inserts. Bid Compliance
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2. The brazing material to be used shall be high strength alloy type material, with a minimum tensile strength of 70,000 PSI. Bid Compliance
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3. The carbide inserts shall be brazed on all sides with no voids. The use of shims or fillers is not acceptable. Bid Compliance
6.
FINISHED PRODUCT
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A. The difference between the highest and lowest tungsten carbide insert, after attachment to the blade, shall be no more than 1/32”. Bid Compliance
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B. The finished blade shall be free of warpage, with longitudinal deviation no to exceed 1/8” in each 4’ long section. Bid Compliance
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C. Each blade section shall be identified with the manufacture’s name. Bid Compliance
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D. The finished blade section shall have markings showing the front edge of the blade. Bid Compliance
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E. The finished blade sections shall be painted to resist corrosion. Bid Compliance
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DELIVERY Orders received by the Contract Vendor between October 1st and April 15th shall be delivered within 14 calendar days unless an alternative date is agreed to by the purchaser. Orders received by the Contract Vendor between April 16th and August 15th shall be delivered within 60 calendar days unless an alternative date is agreed to by the purchaser. Orders received by the Contract Vendor between August 16th and September 30th shall be delivered within 30 calendar days unless an alternative date is agreed to by the purchaser. Bid Compliance
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Note: An initial order for 275 and 375 will be placed upon award and require delivery in no more than 30 days. Subsequent order will be placed as needed but in no less than a quantity of 100 blades combined”