{"product_id":"30h-black-double-segment-soft-concrete","title":"HORMIGÓN BLANDO DOBLE SEGMENTO NEGRO 30H","description":"\u003cp\u003e\u003cstrong\u003e- Aggressive metal-bond grinding segment for early grinding steps\u003c\/strong\u003e — the 30-grit cutting surface opens up the concrete, removes coatings, exposes medium-to-large aggregate, and creates the profile needed for subsequent grinding and polishing. Per industry guidance, 30 grit is the recommended starting point when exposing medium-to-large stone aggregate, sitting between the most aggressive prep (16 grit) and the standard mid-cut (40–50 grit).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e- Double-segment configuration for tool life and refinement\u003c\/strong\u003e — two diamond segments per shoe create more surface contact than a single segment, extending tool life and leaving a more uniform scratch pattern. Best paired with \u003cstrong\u003elarger \/ heavier walk-behind grinders (25\" and up)\u003c\/strong\u003e where the extra contact patch helps the machine pull weight. The smoother cut from a double segment also reduces the work needed at the next grit step.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e- Engineered specifically for soft concrete\u003c\/strong\u003e — soft concrete (typically under 2,500 PSI, Mohs 3–4) is highly abrasive and wears diamonds out fast. The hard metal bond (the \"H\" in 30H) holds the diamonds in place longer, giving you usable tool life on a slab that would chew through a softer-bond segment in a fraction of the time. The black color code is the standard industry marker for the soft-concrete bond.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e- Counterintuitive but correct: hard bond on soft concrete, soft bond on hard concrete\u003c\/strong\u003e — using the wrong bond for the floor causes either premature wear (soft bond on soft floor) or diamond glazing where the tool slides without cutting (hard bond on hard floor). Black sits one step below orange in bond hardness: use black for standard soft concrete, step up to orange when the slab is exceptionally soft or abrasive.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e- Common starting grit for aggregate-exposed finishes on soft concrete\u003c\/strong\u003e — per industry guidance, 30 grit is the recommended first step when the goal is exposing medium-to-large stone aggregate (rather than the salt-and-pepper finish that starts at 70–120 grit). After this 30-grit pass, the typical sequence steps up through 50, 80, and 100-grit metals, then into transitional and resin polishing pads. A clean cut at 30 grit on the right bond is what makes every step afterward faster — leave scratches here and you chase them all the way to the final pad.\u003c\/p\u003e","brand":"Xiamen Murat Tool Ltd.","offers":[{"title":"Default Title","offer_id":49805842284825,"sku":"40006556","price":32.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0883\/9803\/7273\/files\/BC_Upload_0c14dac8-8e7f-4c53-9ff4-652d10447594.png?v=1728921490","url":"https:\/\/shop.simiron.com\/es\/products\/30h-black-double-segment-soft-concrete","provider":"Simiron","version":"1.0","type":"link"}