{
    "code": "3271",
    "title": "Concrete Block and Brick",
    "sic_manual": "OSHA SIC Manual",
    "level": "Industry",
    "major_group_code": "32",
    "parent_code": "327",
    "parent_title": "Concrete, Gypsum, and Plaster Products",
    "plain_english_definition": "",
    "summary_plain": "",
    "official_definition": "Establishments primarily engaged in manufacturing concrete building block and brick from a combination of cement and aggregate.",
    "official_source": "https://www.osha.gov/sic-manual/3271",
    "classification_note": "",
    "included_activities": [
        "Blocks, concrete and cinder",
        "Brick, concrete",
        "Paving block, concrete",
        "Plinth blocks, precast terrazzo"
    ],
    "excluded_activities": [
        {
            "label": "Construction",
            "code": "15-17",
            "title": "Construction",
            "url": "https://siccode.com/sic-code/15-17/construction"
        },
        {
            "label": "Ready-Mixed Concrete",
            "code": "3273",
            "title": "Ready-Mixed Concrete",
            "url": "https://siccode.com/sic-code/3273/ready-mixed-concrete"
        }
    ],
    "confused_codes": [],
    "official_siblings": [
        {
            "code": "3271",
            "title": "Concrete Block and Brick",
            "url": "https://siccode.com/sic-code/3271/concrete-block-brick",
            "label": "Industry"
        },
        {
            "code": "3272",
            "title": "Concrete Products, except Block and Brick",
            "url": "https://siccode.com/sic-code/3272/concrete-products",
            "label": "Industry"
        },
        {
            "code": "3273",
            "title": "Ready-Mixed Concrete",
            "url": "https://siccode.com/sic-code/3273/ready-mixed-concrete",
            "label": "Industry"
        },
        {
            "code": "3274",
            "title": "Lime",
            "url": "https://siccode.com/sic-code/3274/lime",
            "label": "Industry"
        },
        {
            "code": "3275",
            "title": "Gypsum Products",
            "url": "https://siccode.com/sic-code/3275/gypsum-products",
            "label": "Industry"
        }
    ],
    "official_children": [],
    "related_naics_codes": [
        {
            "code": "327331",
            "title": "Concrete Block and Brick Manufacturing ",
            "url": "https://siccode.com/naics-code/327331/concrete-block-brick-manufacturing"
        }
    ],
    "example_companies": [
        {
            "name": "Mutual Materials Co",
            "url": "https://siccode.com/business/mutual-materials-co",
            "city": "Bellevue",
            "state": "WA",
            "reviewed": false
        },
        {
            "name": "Clayton Co",
            "url": "https://siccode.com/business/clayton-co",
            "city": "Neptune",
            "state": "NJ",
            "reviewed": false
        },
        {
            "name": "Acme Brick",
            "url": "https://siccode.com/business/acme-brick",
            "city": "Montgomery",
            "state": "AL",
            "reviewed": false
        },
        {
            "name": "Northfield Block Co",
            "url": "https://siccode.com/business/northfield-block-co",
            "city": "Morris",
            "state": "IL",
            "reviewed": false
        },
        {
            "name": "Trenwyth Industries Inc",
            "url": "https://siccode.com/business/trenwyth-industries-inc",
            "city": "Emigsville",
            "state": "PA",
            "reviewed": false
        },
        {
            "name": "Casting Designs Inc",
            "url": "https://siccode.com/business/casting-designs-inc",
            "city": "Fort Worth",
            "state": "TX",
            "reviewed": false
        },
        {
            "name": "Binkley And Ober Inc",
            "url": "https://siccode.com/business/binkley-and-ober-inc",
            "city": "Manheim",
            "state": "PA",
            "reviewed": false
        },
        {
            "name": "Glen Gery Brick",
            "url": "https://siccode.com/business/glen-gery-brick-2",
            "city": "York",
            "state": "PA",
            "reviewed": false
        },
        {
            "name": "Master Block",
            "url": "https://siccode.com/business/master-block",
            "city": "El Mirage",
            "state": "AZ",
            "reviewed": false
        },
        {
            "name": "Boykin Brothers Inc",
            "url": "https://siccode.com/business/boykin-brothers-inc",
            "city": "Baton Rouge",
            "state": "LA",
            "reviewed": false
        },
        {
            "name": "Resco Products Inc",
            "url": "https://siccode.com/business/resco-products-inc-3",
            "city": "East Canton",
            "state": "OH",
            "reviewed": false
        }
    ],
    "company_count": 134,
    "email_contact_count": 70,
    "phone_count": 134,
    "website_count": 143,
    "database_as_of": "Nov 13, 2026",
    "count_type": "commercial",
    "count_disclaimer": "These are SICCODE.com commercial database counts, not official government establishment totals. Website-Reviewed & Enriched is a separate review of company websites for products, services, markets, and fit.",
    "canonical_url": "https://siccode.com/sic-code/3271/concrete-block-brick",
    "json_url": "https://siccode.com/sic-code/3271.json",
    "reviewed_by": "Industry Classification Review Team",
    "last_updated": "October 2026"
}