28 inch reamer bits all models for coal mining drill
Hole opener drill bit: 1. Hole openers are designed for the enlargement of pilot holes and large hole applications. They are also used for road and river crossing application.
2. The hole openers are manufactured from AISI 4145H fully heat-treated alloy steel. All are available with carbide-milled teeth and insert cutters. Arms and cutters are hardfaced for protection in three different designs for varying conditions and rock formations. The design of the hole opener allows for field-changing the cutters.
The Hole Opener Advantage:
1.Straighter Holes - By drilling a smaller hole with a "pilot" bit, then attaching that said bit onto the bottom of the the hole opener. The hole opener will follow the path of the hole drilled by the smaller bit.
2.Larger Holes with Smaller Rigs - By drilling a hole in stages, larger holes can be drilled with smaller rigs. A smaller hole requires less power.
4.Cost of Large Rock Bits - Larger diameter rock bits not only cost a lot, they can be difficult to find. A more economic solution is to use a hole opener that uses smaller tricone rock bit segments.
5.Flexability - Hole Openers can be fabricated in just about any size, and can be configured to drill through any formation
117 127 517 537
From 28 to 36”
From 711.2 to 914.4
Most favourable price and best quality
By sea or by air ,railway and multimodal transport
Within 7-30work days after confirm the order
Quality guarantee is not only responsible for customers, but also the assurance of enterprise's steady development. The necessary test equipment and the effective & perfect production process control is the assurance of product quality.
We taking the spirit of "To win the market with innovation, to serve the customers with friendship, to build the brand with quality, to develop the enterprise with sincerity", we utilize the advanced testing methods to make each product meticulously.
Packaging & Shipping
Packing:We usually pack in wooden cases. But if you have special requirements, we can also pack as much as you want.
Shipping:We offer three modes of transport by sea, land and air. Sample or small quantity can also be delivered.
Chengdu Rongwanda Drilling Equipment CO., LTD., founded in 2012, is a professional trading company for drilling equipment, our main business is trade various sizes of tricone bit, diamond bit, single cone bit and cone cutter, bit breaker, connection Protector for drill bit, etc. Company has a fixed cooperation factory for many years –Bocom Chengdu Bit Factory, the factory is unique drill bit manufacturer of CNPC. She have history of 50 years in bit design and manufacture and over 80 years in mechanical processing. Through the developing of the oil and gas industry, she has grown up to the main manufacturer in domestic bit manufacture industry.
Professional, honest, excellent supplier of product
Provide the best quality products with the most reasonable price and satisfactory services. Focus on customer demands to improve product performance and quality of service we provide.
Why Choose Us:
Since 2012, Chengdu Rongwanda Drilling Equipment CO., LTD., rely on owed expertise, honest and high quality service, obtained the domestic customers consistent recognition and praise and won the excellent reputation for company. Now, in accordance with company’s trade scales extension, we will devote to provide our premium quality products and service to all over the world. Hope through our efforts along with our good reputation, we can obtain the customers trust from home and abroad.
1. We offer high quality products 2.We can answer any questions about the product
3. We have fast and on time delivery time
4. Every bits have it's quality assurance
5. Contact our anytime if you have any question with bits.
6.We offer 24-hour online service
Q1: What are your main products, and used for?
A: Our products include Tricone bits, PDC drill bits, Single cone bits, Hole opener, Saver sub, Bit breaker. Widely used in mineral exploration, geological drilling, geotechnical engineering, soil sampling etc.
Q2: How do you control the quality?
A: Quality first. In order to guarantee high quality products, all our products are in strict accordance with ISO9001 international quality system and have to undergo a rigorous testing system before delivery.
Q3:Do you provide samples?is it free or extra?
A:Yes,we could offer the sample with good price but not free,if the sample tested is OK, we can give you a good price for the further order.
Q4: Do you accept sample order?
A: Yes sure, please contact us for details.
Welcome to conatct me at any time. I would reply to you as soon as possibile.