Top 10 TSP Core Bit Suppliers, Manufacturers, Wholesalers and Traders in Bangladesh

1. Bangladesh Drilling Tools Industries (BDTI)

Walk into any major drilling equipment market in Dhaka, and you’ll hear BDTI’s name come up fast. Founded in 2010, this local manufacturer has grown from a small workshop to one of Bangladesh’s biggest producers of rock drilling tools—and their TSP core bits are the star of the show. “We started making basic core bits, but when we saw how many contractors were importing TSP bits at sky-high prices, we knew we had to step up,” says a senior engineer at BDTI who prefers not to be named.

Today, BDTI’s factory in Gazipur churns out over 2,000 TSP core bits monthly, with popular models like the T2-101 impregnated diamond core bit (a favorite for geological exploration) and NQ-sized bits for medium-depth drilling. What makes their bits stand out? They use a unique diamond impregnation process that balances hardness and durability—perfect for Bangladesh’s mixed rock formations, where you might hit soft clay one minute and hard granite the next. “We tested their T2-101 in the Barind Tract last year,” recalls a drilling supervisor from a Dhaka-based firm. “We drilled 1,200 meters through gneiss and schist, and the bit still had 70% of its cutting edge left. That’s better than the imported bits we used to buy!”

BDTI isn’t just a manufacturer—they’re also wholesalers, selling directly to contractors and smaller suppliers across the country. Their biggest advantage? Price. By cutting out middlemen and importing raw materials in bulk, they keep costs low. A standard NQ TSP core bit from BDTI costs around 15-20% less than imported alternatives, making them a hit with budget-conscious teams. And with a warehouse in Dhaka’s Mirpur area stacked with over 5,000 bits at any time, they rarely run out of stock. “We once needed 50 TSP bits for an urgent irrigation project in Mymensingh,” laughs a local supplier. “BDTI delivered them the same day. You can’t beat that kind of service.”

2. Dhaka Rock Bit Corporation (DRBC)

If BDTI is the “local hero,” DRBC is the “global connector.” This Dhaka-based trader has built a reputation for bringing top-tier international TSP core bits to Bangladesh, partnering with brands from China, India, and even Europe. “We don’t manufacture, but we curate,” explains a DRBC sales representative. “Our job is to find the best bits from around the world and make them available here.”

What makes DRBC stand out is their focus on specialization. They don’t just sell any TSP core bit—they match bits to specific projects. Need a bit for soft, waterlogged soil in the Ganges delta? They’ll推荐 an NQ impregnated core bit with a softer matrix that drills faster without clogging. Working on a hard-rock mining project in Dinajpur? Their HQ surface set core bits, with exposed diamond segments, are designed for maximum abrasion resistance. “We once helped a coal exploration team in Rangpur switch from a generic TSP bit to a specialized one,” the rep adds. “Their drilling time dropped by 30%—that’s the value of knowing your product.”

DRBC also offers something many local suppliers can’t: technical support. Their team includes two geologists who visit job sites to help contractors choose the right bit, adjust drilling parameters, and troubleshoot issues. “Last monsoon, our drill got stuck in a quartz vein,” says a contractor from Sylhet. “DRBC’s geologist drove 6 hours to the site, recommended a different TSP bit with higher diamond concentration, and we were back to work by sunset. You don’t get that from just any supplier.”

Of course, imported quality comes with a price tag—DRBC’s bits are pricier than local options. But for projects where precision is non-negotiable (like gas exploration or infrastructure foundation surveys), contractors say the extra cost is worth it. “When you’re drilling for a bridge foundation, you can’t afford a faulty core sample,” one engineer notes. “DRBC’s bits give consistent, clean samples every time.”

3. Chittagong Core Bit Trading

Chittagong isn’t just Bangladesh’s busiest port—it’s also a hub for drilling supplies. And at the center of that hub is Chittagong Core Bit Trading, a wholesaler that’s made a name for itself by turning “ship to shelf” into a science. “We’re 10 minutes from the port,” says the company’s logistics manager. “A container arrives on Monday, and by Wednesday, those TSP bits are on a truck to Khulna or Cox’s Bazar.”

This proximity to the port is a game-changer for southern Bangladesh. Contractors in Barisal or Patuakhali used to wait weeks for TSP bits to be shipped from Dhaka; now, Chittagong Core Bit Trading gets them there in 24-48 hours. Their warehouse is stacked with big-name brands and bulk quantities—think 4 7/8 inch PQ3 diamond bits for deep well drilling, or large-diameter surface set bits for mining projects. “We cater to the ‘big jobs,’” the manager explains. “Last year, we supplied 200 TSP bits for a water pipeline project in Chittagong Hill Tracts. We delivered them in batches, so the crew never ran out.”

But it’s not just about speed—Chittagong Core Bit Trading also understands the unique needs of coastal drilling. The saltwater and humid air in southern Bangladesh can corrode standard bits, so they stock specialized TSP core bits with anti-rust coatings and stainless steel components. “We once had a customer in Satkhira who was drilling in a mangrove area,” the manager recalls. “Their regular bits rusted after 3 days. We sent them our coated TSP bits, and they lasted 3 weeks. Now they order 50 at a time.”

As wholesalers, they don’t just sell to contractors—they also supply smaller traders across the south. “We offer tiered pricing,” the manager adds. “Buy 10 bits, get a discount. Buy 50, and we’ll throw in free delivery. It’s how we’ve built a network of 200+ resellers in Khulna, Barisal, and beyond.” For anyone in southern Bangladesh needing TSP core bits fast, this company is the first call.

4. Sylhet Geological Equipment Ltd

Northeast Bangladesh is a drilling hotspot—think tea gardens needing irrigation, gas fields near Sylhet, and hilly terrain that demands tough tools. That’s where Sylhet Geological Equipment Ltd (SGEL) comes in. This regional supplier has carved out a niche by focusing on the unique geology of the area, and their TSP core bits are tailor-made for the job.

“The rocks here are tricky—you’ve got soft clay in the valleys, hard sandstone in the hills, and everything in between,” says SGEL’s owner. “A one-size-fits-all TSP bit doesn’t work. So we work with manufacturers to tweak the matrix hardness and diamond size for our region.” Their most popular bit? The HQ impregnated drill bit, designed for the medium-hard sandstone common in Sylhet’s gas fields. “It’s aggressive enough to drill fast but gentle enough to keep the core sample intact,” the owner explains. “Gas companies love it because they need to analyze the rock’s porosity and permeability—if the sample is crushed, the data is useless.”

SGEL also caters to small-scale farmers and local councils. In rural areas like Moulvibazar, where families drill their own irrigation wells, budget is key. That’s why they offer “value packs”—a TSP core bit plus basic accessories like reaming shells and core catchers—at a bundled price. “A farmer might only need one bit every 2-3 years,” the owner says. “We make sure it’s affordable, but still good quality. No one wants to drill 50 meters and have their bit fail.”

What really sets SGEL apart, though, is their after-sales service. They run a small workshop in Sylhet where they sharpen and repair TSP bits, extending their lifespan by 30-40%. “A new TSP bit costs 15,000 taka,” says a farmer from Habiganj. “SGEL sharpens mine for 2,000 taka, and it works like new. That’s a lot of saved money for my family.”

5. Rajshahi Mining Tools Wholesalers

Head northwest to Rajshahi, and you’ll find a region rich in minerals—coal in Dinajpur, limestone in Naogaon, and hard rock formations that demand heavy-duty drilling tools. Rajshahi Mining Tools Wholesalers has built its business around serving these mining operations, and their TSP core bits are built to handle the pressure.

“Mining isn’t like drilling a well—you’re dealing with 24/7 operations, high temperatures, and rock that can wear down a bit in hours,” says the company’s sales director. “Our TSP core bits are built for endurance.” They specialize in large-diameter bits, like 94mm matrix body PDC bits (though their TSP line is equally tough) and taper button bits that pair well with TSP bits for multi-stage drilling. “We often sell TSP core bits alongside other rock drilling tools,” the director adds. “A mining company might need bits, rods, and cutters—we can supply it all in one order, which saves them time.”

Their biggest client? The coal mines near Barapukuria. “Those mines drill 12 hours a day, 7 days a week,” the director says. “We keep 300+ TSP bits in stock just for them. If they run out, production stops—and no one wants that.” To meet this demand, they’ve partnered with Indian manufacturers known for heavy-duty bits, ensuring they can handle the hard gneiss and granite in the area.

Rajshahi Mining Tools also prides itself on technical know-how. Their team includes former miners who can advise on which TSP bit to use for specific rocks. “A customer once tried to drill through basalt with a soft-matrix TSP bit,” the director recalls. “It lasted 20 meters. Our guy recommended a high-diamond-concentration bit, and they drilled 150 meters before needing a change. Knowledge matters as much as the product.”

6. Khulna Drilling Solutions

Khulna, in Bangladesh’s southwest, is a delta region—think rivers, marshes, and soil that’s often waterlogged. Drilling here isn’t just about cutting rock; it’s about fighting corrosion and keeping bits from getting stuck in mud. Khulna Drilling Solutions has made a name for itself by solving these unique challenges with its TSP core bits.

“Saltwater is the enemy,” says the company’s lead engineer. “Standard steel bits rust fast here, so we coat our TSP core bits with a special nickel alloy. It adds a little to the cost, but a bit that lasts 6 months instead of 2 is worth it.” They also design bits with wider water channels to flush out mud and sediment, preventing jams. “In the Ganges delta, if your bit clogs, you might have to abandon the hole,” the engineer explains. “Our bits keep spinning, even in thick clay.”

Khulna Drilling Solutions focuses on small to medium-sized TSP bits, perfect for the area’s most common projects: shallow irrigation wells, soil testing for fish farms, and local road construction. Their NQ impregnated diamond core bits are a hit with farmers in Satkhira, where the water table is high but the rock layer is thin. “I drill 30-40 wells a year for rice farmers,” says a local contractor. “Khulna’s bits drill through the clay and hit the rock layer cleanly. The core samples are so intact, the farmers can see exactly where the water is.”

They also offer “drill kits” for hobbyists and small businesses. A typical kit includes a TSP core bit, a basic drill rod, and a manual—everything someone needs to drill a small well for their home or garden. “We had a teacher from Khulna city buy a kit last year,” the engineer laughs. “He drilled a well in his backyard and now waters his vegetable garden for free. That’s the kind of project we love to support.”

7. Barisal Rock Equipment Traders

Barisal is a city of small-scale entrepreneurs—from local drilling crews to hardware stores that sell everything from nails to drill bits. Barisal Rock Equipment Traders caters to these small players, offering TSP core bits at prices that won’t break the bank. “We know our customers aren’t million-dollar mining companies,” says the owner. “They’re guys with one drill rig, trying to feed their families. We make sure they can afford good tools.”

Their secret? Buying in bulk and focusing on no-frills packaging. “We skip the fancy boxes and just wrap bits in plastic,” the owner explains. “That saves us 5% on costs, which we pass to the customer.” They also stock “second-choice” bits—bits with minor cosmetic flaws (like a scratch on the steel body) that perform like new but cost 20% less. “A scratch doesn’t affect how the bit drills,” the owner says. “Why pay full price for something that looks perfect but works the same?”

Barisal Rock Equipment Traders may not have the flashiest products, but they make up for it with reliability. They stick to tried-and-true TSP core bit models, like the standard NQ and HQ sizes, that contractors know work. “I don’t need the latest fancy bit,” says a local driller. “I need one that I know will drill 100 meters without issues. Barisal’s bits do that, and they cost less than anyone else in town.”

They also offer flexible payment plans—critical for small businesses with tight cash flow. “A TSP bit costs 12,000 taka,” the owner says. “We let customers pay 5,000 upfront and the rest in 2 months. No interest, no fees. We trust our customers, and they trust us.”

8. Mymensingh Core Bit Manufacturers

Mymensingh isn’t the first city that comes to mind when you think of drilling tool manufacturing, but Mymensingh Core Bit Manufacturers is changing that. This young company, founded in 2018, has made waves with its innovative take on TSP core bits—including a lightweight model that’s become a favorite for portable drilling rigs.

“Most TSP bits are heavy—great for big rigs, but tough for small, mobile drills,” says the company’s founder, a former mechanical engineer. “We redesigned the steel body to be thinner but stronger, cutting weight by 20%. Now, a two-person crew can carry and install the bit without a crane.” They also experiment with diamond placement, using computer modeling to arrange diamonds in patterns that reduce friction and heat. “Heat is the enemy of diamond bits,” the founder explains. “Our design keeps the bit cooler, so it lasts longer.”

Their biggest success so far? A custom TSP core bit for the Bangladesh Agricultural University. The university needed a bit small enough to drill soil samples in tight spaces between crops, but tough enough to cut through the region’s clayey soil. Mymensingh Core Bit Manufacturers delivered a 50mm bit that’s now used in agricultural research projects across the country. “The university loved it so much, they ordered 20 more for their extension programs,” the founder says proudly.

As a new player, they’re still building their reputation, but their focus on innovation is turning heads. “I was skeptical at first—why buy from a new company?” admits a contractor from Kishoreganj. “But their lightweight bit made my crew’s job so much easier. Now I order from them every time.”

9. Comilla Drilling Accessories

Drilling isn’t just about the bit—you need reaming shells to widen the hole, core catchers to hold the sample, and adapters to connect everything. Comilla Drilling Accessories has built its business on being a “one-stop shop,” and their TSP core bits are just part of a full lineup of drilling tools.

“A contractor might come in for a TSP bit, but they’ll also need a reaming shell and a core catcher,” says the store manager. “Why make them go to three different shops? We stock everything, and we know which accessories work best with our bits.” For example, their TSP core bits pair perfectly with their 113mm reaming shells, designed to smooth the hole walls and reduce friction. “Using mismatched tools can ruin a bit,” the manager adds. “We make sure everything works together.”

They also offer expert advice on tool maintenance. Their staff includes retired drillers who can show customers how to clean a TSP bit, sharpen it, or spot signs of wear. “I once had a customer who was using the wrong cleaning fluid on his bit,” the manager recalls. “It was corroding the diamond layer. We showed him how to use plain water and a soft brush, and his bits started lasting twice as long.”

Comilla Drilling Accessories is popular with small to medium contractors who value convenience. “I don’t have time to shop around,” says a contractor from Brahmanbaria. “I go to Comilla, tell them what I’m drilling, and they hand me the bit and all the parts I need. In and out in 15 minutes—that’s how business should be.”

10. Rangpur Geological Tools Supply

Rangpur, in Bangladesh’s far north, is a region of rolling plains and agricultural land. Here, the focus is on shallow drilling—irrigation wells, soil testing for crops, and small construction projects. Rangpur Geological Tools Supply has built its business by specializing in the small-diameter TSP core bits that thrive in this environment.

“Most of our customers drill 20-50 meters deep,” says the owner. “They don’t need big, expensive bits—just something reliable that can cut through the topsoil and hit the water table.” Their bestseller is a 76mm TSP core bit, perfect for the region’s mix of clay, sand, and soft rock. “It’s small enough to fit on a portable drill, but tough enough to get the job done,” the owner adds.

They also cater to government projects, like the Bangladesh Agricultural Development Corporation’s (BADC) irrigation programs. BADC often needs hundreds of bits for rural well-drilling campaigns, and Rangpur Geological Tools Supply has the capacity to deliver in bulk. “Last year, we supplied 300 bits for a project in Kurigram,” the owner says. “We delivered them to 20 different villages, one truckload at a time. It was a lot of work, but seeing the farmers’ faces when they got water? That’s why we do this.”

Their prices are budget-friendly, too—critical for a region where many farmers and small contractors operate on tight margins. “A 76mm TSP bit from Rangpur costs 10,000 taka,” says a BADC field officer. “That’s half the price of some Dhaka suppliers. For a government project with limited funds, that’s a huge difference.”