Bongshai Concrete Block supplies BSTI-compliant, 1300 PSI solid concrete blocks — damp-proof, fire-resistant, and eco-friendly — for residential, commercial, and industrial construction across Bangladesh.
Bangladesh's premium high-density concrete blocks — 1300 PSI compressive strength, zero topsoil destruction, 30% mortar savings vs. traditional red brick.
Three precision-engineered sizes for every construction need. All blocks rated at 1300 PSI — exceeding BSTI minimum standards.
Lightweight partition walls, interior dividers, and non-load-bearing infill. Fast to lay, mortar-efficient.
General-purpose structural walls, boundary walls, and load-bearing masonry. The most versatile size in our range.
Heavy-duty external walls, basement perimeter, and high-security applications requiring maximum thermal mass.
Pricing is provided by quote — it depends on order size, delivery distance and current raw-material rates. Volume discounts apply for orders of 500+ pieces.
Every Bongshai block is engineered to thrive in Bangladesh's humid, high-rainfall, and seismically active environment — from the flood plains of Narsingdi to the coastal salinity of the Bay of Bengal.
Exceeds BSTI minimum standards, delivering superior structural integrity for multi-storey buildings.
Resistant to moisture and salt crystallization (নোনা ধরা মুক্ত) — ideal for coastal and flood-prone zones.
Unlike burnt red bricks, Bongshai blocks require no agricultural topsoil — a BNBC-aligned sustainable choice.
High thermal mass slows fire spread and reduces sound transmission — critical for residential and industrial buildings.
Larger block size covers more wall area per course, cutting masonry time vs. standard bricks.
Uniform dimensions and flat surfaces minimize joint thickness, significantly reducing mortar and plastering costs.
Why leading contractors and developers across Bangladesh are switching to Bongshai concrete blocks.
Red-brick bar plotted at its best-case 700 PSI; typical field strength is lower and varies by kiln batch. Full side-by-side comparison in the table below.
| Factor | Bongshai Concrete Block | Traditional Red Brick |
|---|---|---|
| Compressive Strength | 1300 PSI (15 MPa) | 300–700 PSI (variable) |
| Topsoil Impact | Zero topsoil destruction | Destroys agricultural topsoil |
| Damp & Salt Resistance | Fully damp-proof | Absorbs moisture & salts |
| Mortar Consumption | Up to 30% less mortar | High mortar volume needed |
| Dimension Uniformity | Machine-precision uniform | Variable (manual kiln) |
| Fire Resistance | High thermal mass | Moderate |
| Construction Speed | Up to 25% faster | Slower, more courses |
| Environmental Compliance | BNBC 2020 preferred | Being phased out by BNBC |
| Plaster Thickness | Thinner plaster needed | Heavier plaster required |
Estimate how many blocks your wall area needs — then send the quantity for a quote.
Estimate includes a 5% wastage allowance and assumes a 16″ × 8″ block face. Get a quote for this quantity →
A clear, contractor-friendly process from quote to delivery — for every order from 500 pieces to full multi-storey project supply, with payment staged against delivery rather than paid all up front.
Send block sizes, quantity and delivery location. We reply with a written quote — unit price, transport and lead time — usually within 2 business hours.
Approve the quote, then a purchase order plus a 30–50% advance reserves a production slot. Approved trade accounts may confirm on a lower advance.
Blocks are cast and cured to full 1300 PSI strength. Large orders are batched, so the first delivery can begin while the balance is still curing.
Delivery by the truckload, on your site's schedule. Each lot ships against a delivery challan; unloading is arranged by the buyer.
Balance clears per lot or before the final dispatch. Approved developers and contractors can arrange Net 15–30 terms against post-dated cheque or bank guarantee.
| On purchase order | 30–50% advance |
|---|---|
| Per delivery lot (large orders) | Pro-rata balance vs. challan |
| Before final dispatch | Remaining balance in full |
| Approved credit accounts | Up to Net 30 (PDC / bank guarantee) |
| Project retention, if applicable | Up to 5%, released after final QC |
Your quote sets the unit price, transport and lead time. The advance percentage and any credit terms are agreed with the quote, based on order size, delivery schedule and account history. Prices exclude VAT / AIT where applicable; Mushak challan provided on request.
| Order quantity | What applies |
|---|---|
| Under 500 pcs | Standard quoted rate |
| 500 – 1,999 pcs | Volume discount |
| 2,000 – 9,999 pcs | Volume discount + priority scheduling |
| 10,000+ pcs / project | Project rate + dedicated delivery plan |
"We switched to Bongshai blocks for a 6-storey residential project in Gazipur. The uniformity cut our plastering cost significantly — and the blocks are genuinely stronger than what we used before."
"For our factory boundary wall in Narsingdi, we needed damp-proof blocks. Bongshai delivered on time and the blocks haven't shown a single crack or salt stain in two monsoon seasons."
"The WhatsApp ordering process is incredibly convenient. Quoted, ordered and delivered within 3 days. Quality is consistent batch after batch — exactly what a contractor needs."
Last updated: September 2026 · Reviewed by Bongshai Engineering & Construction team.
Bongshai concrete blocks achieve 1300 PSI (15 MPa) compressive strength, exceeding BSTI minimum requirements. Suitable for load-bearing walls, boundary walls, and multi-storey infill construction.
Yes. Bongshai blocks are fully damp-proof and efflorescence-free (ড্যাম্প ও নোনা ধরা মুক্ত). An excellent choice for coastal regions, flood-prone zones, and areas with high groundwater salinity across Bangladesh.
Three standard solid sizes, all rated at 1300 PSI:
Volume discounts apply for orders of 500+ pieces.
Pricing is provided by quote. Send us the sizes, quantity and delivery location and we reply with a written quote — unit price, transport and lead time — usually within 2 business hours. Prices depend on order size, delivery distance and current raw-material rates.
We deliver nationwide across Bangladesh, covering Greater Dhaka, Uttara, Gazipur, and Narsingdi. Typical lead time is 2–5 business days depending on order volume and delivery location.
Yes. Bongshai blocks align with BSTI standards and BNBC 2020 guidelines, which actively promote eco-friendly concrete masonry units over traditional burnt red bricks to reduce topsoil destruction.
Three key savings: (1) up to 30% less mortar due to uniform dimensions; (2) thinner plaster finishing due to flat, precise surfaces; (3) faster masonry (up to 25% quicker) due to larger block coverage per course.
Once your quote is confirmed, a purchase order plus a 30–50% advance reserves a production slot. For large orders the balance is paid pro-rata against each delivery lot; otherwise the remaining balance is settled before final dispatch. Payment by bank transfer (BEFTN / RTGS), account-payee cheque, or bKash / Nagad for smaller balances.
Yes. Approved trade accounts can arrange up to Net 30 payment terms against post-dated cheques or a bank guarantee. New accounts start on advance-and-delivery terms and become eligible for credit once a supply history is established.
Tell us the sizes, quantities and delivery location. We reply within 2 business hours with a written quote — unit price, transport, lead time and volume discount.
Minimum 100 pieces · volume discount from 500 pieces. Your quote covers unit price, transport by distance, and lead time.
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