DTH Adapter
General Introduction
A DTH adapter is a mechanical coupling device designed to connect two drill rods or drill components with different thread types, ensuring a secure and stable connection. It allows for the compatibility of rods, hammers, and tools from different manufacturers or with varying thread specifications. These adapters are commonly used in Down-The-Hole (DTH) drilling, where they facilitate the joining of rods with different sizes, thread patterns (e.g., R32, T38, or API), or designs, without requiring a complete replacement of rods or other components.
Box-Pin Adapters: Used to connect a drill rod with a box thread to a pin thread, providing a secure, durable connection.
Box-Box Adapters: Designed to link two drill rods with box threads, ensuring stability and minimizing the risk of thread damage.
Pin-Pin Adapters: Ideal for connecting two components with pin threads, these adapters are engineered to maintain thread integrity under high-stress conditions.
Specifications
BOX - PIN Adapter
| Thread PIN/BOX | ODA | ODB | Effective Length C | Wrench Flat | Weight | |||
| mm | inch | mm | inch | mm | mm | inch | kg | |
| API 2 3/8" REG API 2 3/8" REG |
77 | 3.03 | 77 | 3.03 | 140 | 65 | 2.56 | 4 |
| API 2 3/8" REG API 2 3/8" REG |
90 | 3.54 | 90 | 3.54 | 140 | 65 | 2.56 | 5.5 |
| API 2 3/8" REG API 2 3/8" IF |
90 | 3.54 | 90 | 3.54 | 144 | 65 | 2.56 | 5.5 |
| API 2 3/8" REG API 2 7/8" REG |
95 | 3.74 | 95 | 3.74 | 130 | 65 | 2.56 | 8 |
| API 2 3/8" REG API 3 1/2" REG |
90 | 3.54 | 102 | 4.02 | 120 | 95 | 3.74 | 10.5 |
| API 2 3/8" IF API 2 3/8" REG |
90 | 3.54 | 90 | 3.54 | 164 | 65 | 2.56 | 6.8 |
| API 2 7/8 " REG API 2 3/8" REG | 90 | 3.54 | 90 | 3.54 | 154 | 65 | 2.56 | 6.5 |
| API 2 7/8 " REG API 3 1/2" REG |
90 | 3.54 | 105 | 4.13 | 120 | 95 | 3.74 | 11.1 |
| API 3 1/2" REG API 2 3/8" REG |
115 | 4.53 | 90 | 3.54 | 219 | 95 | 3.74 | 12.5 |
| API 3 1/2" REG API 2 3/8" IF |
115 | 4.53 | 115 | 4.53 | 160 | 95 | 3.74 | 10.6 |
| API 3 1/2" REG API 2 7/8" REG |
115 | 4.53 | 115 | 4.53 | 160 | 95 | 3.74 | 10.9 |
| API 3 1/2" REG API 2 7/8" IF |
115 | 4.53 | 115 | 4.53 | 160 | 95 | 3.74 | 10.9 |
| API 3 1/2" REG API 3 1/2" REG |
115 | 4.53 | 115 | 4.53 | 160 | 95 | 3.74 | 10.6 |
| API 3 1/2" REG API 4 1/2" REG |
115 | 4.53 | 146 | 5.75 | 132 | 120 | 4.72 | 16.2 |
| API 4 1/2" REG API 3 1/2" REG |
146 | 5.75 | 115 | 4.53 | 235 | 95 | 3.74 | 17.1 |
BOX - BOX Adapter
| Thread PIN/BOX | ODA | ODB | Effective Length C | Wrench Flat | Weight | |||
| mm | inch | mm | inch | mm | mm | inch | kg | |
| API 2 3/8" REG API 2 3/8" REG |
77 | 3.03 | 77 | 3.03 | 200 | 65 | 2.56 | 4.6 |
| API 2 3/8" REG API 2 3/8" REG |
90 | 3.54 | 90 | 3.54 | 200 | 65 | 2.56 | 5.8 |
| API 2 3/8" REG API 2 3/8" IF | 90 | 3.54 | 90 | 3.54 | 220 | 65 | 2.56 | 6.1 |
| API 2 3/8" REG API 2 7/8" REG | 90 | 3.54 | 90 | 3.54 | 225 | 65 | 2.56 | 6.2 |
| API 2 3/8" REG API 2 7/8" IF | 90 | 3.54 | 90 | 3.54 | 220 | 65 | 2.56 | 6.1 |
| API 2 3/8" IF API 3 1/2" REG |
90 | 3.54 | 115 | 4.53 | 210 | 95 | 3.74 | 10.6 |
| API 2 3/8" IF API 2 3/8" IF |
90 | 3.54 | 90 | 3.54 | 230 | 65 | 2.56 | 6.2 |
| API 3 1/2" REG API 2 3/8" IF | 115 | 4.53 | 90 | 3.54 | 260 | 95 | 3.74 | 9.1 |
| API 3 1/2" REG API 2 7/8" REG | 115 | 4.53 | 90 | 3.54 | 230 | 95 | 3.74 | 10 |
| API 3 1/2" REG API 2 7/8" IF | 115 | 4.53 | 115 | 4.53 | 220 | 95 | 3.74 | 10 |
| API 3 1/2" REG API 3 1/2" REG |
115 | 4.53 | 115 | 4.53 | 220 | 95 | 3.74 | 10.6 |
| API 3 1/2" REG API 4 1/2" REG |
115 | 4.53 | 146 | 5.75 | 240 | 120 | 4.72 | 18.2 |
Pin - Pin Adapter
| Thread PIN/BOX | ODA | ODB | Effective Length C | Wrench Flat | Weight | |||
| mm | inch | mm | inch | mm | mm | inch | kg | |
| API 2 3/8" REG API 2 3/8" REG |
90 | 3.54 | 90 | 3.54 | 70 | 65 | 2.56 | / |
| API 2 3/8" REG API 2 7/8" REG |
90 | 3.54 | 95 | 3.74 | 152.4 | 65 | 2.56 | / |
| API 2 3/8" REG API 3 1/2" REG |
90 | 3.54 | 115 | 4.53 | 97 | 95 | 3.74 | / |
| API 3 1/2" REG API 3 1/2" REG |
115 | 4.53 | 115 | 4.53 | 177.8 | 95 | 3.74 | / |
| API 3 1/2" REG API 4 1/2" REG |
115 | 4.53 | 146 | 5.75 | 92 | 120 | 4.72 | / |
| API 4 1/2" REG API 4 1/2" REG |
146 | 5.75 | 146 | 5.75 | 203.2 | 120 | 4.72 | / |
FAQS
Q: 1. How long do the DTH adapters last?
A: The lifespan of a DTH adapter depends on the drilling conditions, frequency of use, and maintenance. However, our adapters are made from high-quality materials designed to withstand heavy-duty operations, offering extended service life. Regular inspection and proper maintenance will maximize the lifespan of your adapters.
Q: 2. Can I customize the size or specifications of my DTH adapter?
A: Yes, we offer custom DTH adapters tailored to your specific needs. Whether you require a unique size, thread type, or material, our team can work with you to create an adapter that meets your exact specifications.
Q: 3. What is the lead time for ordering DTH adapters?
A: Lead times for DTH adapters depend on the order volume and customization requirements. Typically, standard orders ship around 10 business days, while custom orders may take longer. We will provide an estimated delivery timeline when you place your order.
Q: 4. What are the shipping options for DTH adapters?
A: Gdrills offers multiple shipping options, including sea freight, air freight, and train transport, to deliver your DTH adapters in a timely manner. You can choose the most convenient and cost-effective shipping method based on your location and urgency.
Q: 5. Can I get a sample before placing a large order?
A: Upon Gdrills company policies, samples are encouraged to try before placing a large order. Please contact the sales office for information.
Q: 6. Do you offer any discounts for bulk orders?
A: Yes, Gdrills offer competitive pricing and discounts for bulk orders. The discount will depend on the order volume and other issues. Contact the sales office for more information to get a personalized quote.
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