Will this blade cut cast iron pipe?

it will cut steel but it will wear it out very fast . i am a mason and cut rebar with these blades all the time . not sure about cast iron but softer steel they will cut although they are not intended to be used for that

Will this fit a DeWalt model D28402W?

Yes, you can use this with the DW402 but you need to get the DW4706 Backing Flange. Amazon sells it for $2.99 as an add-on item. You need this flange for any type 1 cutting wheel used on a type 72 grinder (cupped surface disks). BTW, the arbor is 7/8" for disks that don't screw on, and 5/8" threads for those that do screw on. Hence you need cutting disks, like this one, with a 7/8" arbor. This applies for all grinders, not just Dewalt.

Will this fit the cordless dewalt 4 1/2 dcg412? thanks

It will fit any 4 1/2". Cord or no cord is irrelevant.

Will this grid carbide bits?

This a Diamond Saw Blade, its used to cut tile, brick, concrete, Masonry type work. Not intended for cutting metal. I cut tile and concrete with mine.

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DEWALT Diamond Blade for Masonry, Dry Cutting, Continuous Rim, 7/8-Inch Arbor, 4-1/2-Inch (DW4725)

Product ID: 3979999

Details

Brand
DEWALT
Color
Multi
Compatible Devices
Saws with and
Item Weight
0.26 Pounds
Material
Blend
Number of Items
1

⚡Thinner kerf for faster cuts

💎200x longer diamond matrix life

🌬️Minimizes dust for cleaner work

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Sold byAmazon FijiDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💎 Cut sharper, faster, cleaner — the DEWALT edge you can't afford to miss!

PRECISION SPEED - Thinner kerf design accelerates your cut rate without sacrificing accuracy—get the job done faster.
CLEANER WORKSPACE - Dust-minimizing technology keeps your environment safer and your tools cleaner, boosting productivity.
UNMATCHED DURABILITY - 200 times the lifespan of conventional blades means fewer replacements and more uninterrupted projects.
TOP RANKED PERFORMANCE - Trusted by thousands with a 4.7-star rating and ranked #3 in Diamond Saw Blades—join the pros who demand the best.
VERSATILE COMPATIBILITY - Fits any 7/8-inch arbor saw with dry cutting capability—perfect for granite, marble, concrete, and masonry.

The DEWALT DW4725 4-1/2-Inch High Performance Diamond Blade delivers 200x the life of standard abrasives with a thinner kerf for faster, cleaner dry cuts on masonry materials. Engineered for precision and durability, it fits 7/8-inch arbor saws and excels on granite, marble, and concrete, making it a top-rated choice among professionals.

Specifications

ASIN	B0002Q8TIC
Best Sellers Rank	#3,525 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #3 in Diamond Saw Blades
Brand Name	DEWALT
Color	Multi
Compatible Devices	Saws with 7/8-inch arbor and dry cutting capability
Compatible Material	Granite, Marble, Concrete
Customer Reviews	4.7 4.7 out of 5 stars (8,172)
Global Trade Identification Number	00028877328881
Included Components	DW4725 - 4-1/2 in. High Performance Diamond Masonry Blade
Item Dimensions L x W	4.5"L x 4.5"W
Item Type Name	4-1/2IN HIGH PERF MASONRY BLADE CARDED
Item Weight	0.26 Pounds
Manufacturer	DEWALT
Material Type	Blend
Model	DW4725
Part Number	DW4725
Set Name	Single
Style Name	Modern
UPC	028877328881
Unit Count	1.0 Count

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