Our Box-Box (Female-to-Female) adapters are essential components for connecting DTH hammers and drill rods. Engineered to ensure a perfect fit, these adapters act as a protective link, significantly reducing thread wear on your drill rods and extending the service life of your entire drilling string.
Manufactured from premium-grade alloy steel, our adapters provide superior durability and precise alignment under high-impact conditions. Ideal for water well drilling, mining, and construction, they offer a reliable and cost-effective solution to keep your rigs running longer with minimal maintenance.
Specifications
|
Connection |
Length C (mm) |
Length Shoulder J (mm) |
Width Spanner flats E (mm) |
Std bore d (mm) |
Outside Diameter |
Across Flat F (mm) |
||
|
Box up A |
Box down B |
Top D1 (mm) |
Bottom D2 (mm) |
|||||
|
API2 3/8*REG |
API2 3/8*REG |
70 |
20 |
50.8 |
24 |
78 |
78 |
65 |
|
API2 3/8*REG |
API2 7/8*REG |
152.4 |
50.8 |
50.8 |
25.4 |
88.9 |
88.9 |
69.85 |
|
API2 3/8*REG |
API3 1/2*REG |
96 |
35 |
50.8 |
24 |
114.3 |
114.3 |
98.4 |
|
API3 1/2*REG |
API3 1/2*REG |
177.8 |
63.5 |
50.8 |
44.45 |
114.3 |
114.3 |
98.4 |
|
API3 1/2*REG |
API4 1/2*REG |
92 |
12.7 |
69.85 |
38.1 |
114.3 |
139.7 |
120.65 |
|
API4 1/2*REG |
API4 1/2*REG |
203.2 |
76.2 |
50.8 |
58.7 |
146 |
146 |
120.65 |

FAQ
Do you provide technical support?
Yes. We provide professional pre-sales, in-sales, and after-sales support, along with expert technical guidance and usage precautions.
Sales Coverage
We supply specialized products to customers worldwide.
Do you provide technical support?
Yes. We provide professional pre-sales, in-sales, and after-sales support, along with expert technical guidance and usage precautions.
Warranty Policy
We provide repair service if there is necessary
Payment Methods
30% advance payment,70% balance payment before shipment
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