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Home  /  Product Center  /  Drill Pipe Series  /  RC reverse circulation drill pipe
RC reverse circulation drill pipe
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Drill Pipe Series

RC reverse circulation drill pipe

A professional-grade RC double-wall drill bit designed specifically for mineral exploration and hydrogeological sampling. Its superior thread seal and high wear resistance ensure continuous, stable, and high-precision coring operations even under extremel

Expert Support / OEM Customization : We can provide non-standard sizes and designs based on specific geological conditions.
Blueprint
Stable & Durable
Factory Direct
CNC Machining
Technical Support
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TECHNICAL DATA

Product Specifications

Φ76

Outer Diameter Φ76
Male Thread Type (P) 3"Remet
Female Thread Type (B) 3"Remet
Inner Tube Outer Diameter (d) Φ40
Inner Tube Wall Thickness (t) 5mm
Wrench Flat Size (E) 50mm
Wrench Flat Size (G) 72mm
Effective Length (L) 1500mm-3000mm
Tube Body Wall Thickness (T) 5mm
Φ76 CAD Schematic

Φ89

Outer Diameter Φ89
Male Thread Type (P) 3 1/2"Remet
Female Thread Type (B) 3 1/2"Remet
Inner Tube Outer Diameter (d) Φ50
Inner Tube Wall Thickness (t) 5mm
Wrench Flat Size (E) 50mm
Wrench Flat Size (G) 80mm
Effective Length (L) 1500mm-6000mm
Tube Body Wall Thickness (T) 6.3mm or 7.5mm or 10mm
Φ89 CAD Schematic

Φ102

Outer Diameter Φ102
Male Thread Type (P) 4"Remet or 4Metzke
Female Thread Type (B) 4"Remet or 4Metzke
Inner Tube Outer Diameter (d) Φ50
Inner Tube Wall Thickness (t) 5mm
Wrench Flat Size (E) 50mm
Wrench Flat Size (G) 90mm
Effective Length (L) 1500mm-6000mm
Tube Body Wall Thickness (T) 6.5mm or 7.5mm or 8.5mm or 9mm or 9.5mm or 10mm
Φ102 CAD Schematic

Φ114

Outer Diameter Φ114
Male Thread Type (P) 4 1/2"Remet or 4 1/2"Metzke or DR115
Female Thread Type (B) 4 1/2"Remet or 4 1/2"Metzke or DR115
Inner Tube Outer Diameter (d) Φ60
Inner Tube Wall Thickness (t) 5mm
Wrench Flat Size (E) 50mm
Wrench Flat Size (G) 102mm
Effective Length (L) 1500mm-6000mm
Tube Body Wall Thickness (T) 8mm or 8.5mm or 9mm
Φ114 CAD Schematic

Φ127

Outer Diameter Φ127
Male Thread Type (P) 4 1/2"Remet
Female Thread Type (B) 4 1/2"Remet
Inner Tube Outer Diameter (d) Φ60
Inner Tube Wall Thickness (t) 5mm
Wrench Flat Size (E) 50mm
Wrench Flat Size (G) 118mm
Effective Length (L) 1500mm-6000mm
Tube Body Wall Thickness (T) 9mm
Φ127 CAD Schematic

Product Details

RC reverse circulation drill pipe

Interface Standard
3"Remet
Inner Tube Outer Diameter (d)
Φ40
Wrench Across Flats
50mm / 72mm
Effective Length (L)
1500mm-3000mm
Outer Diameter
Φ76
01

Structure

Φ76 Product structure drawing
Φ76 Product structure drawing
1Outer Diameter
Φ76
2Male Thread Type (P)
3"Remet
3Female Thread Type (B)
3"Remet
4Inner Tube Outer Diameter (d)
Φ40
5Inner Tube Wall Thickness (t)
5mm
02

Compatibility

Outer Diameter
Φ76
Male Thread Type (P)
3"Remet
Female Thread Type (B)
3"Remet
Inner Tube Outer Diameter (d)
Φ40
Inner Tube Wall Thickness (t)
5mm
Wrench Flat Size (E)
50mm
PRODUCT SUPPORT

Build the right drilling solution around this product.

Tell us your working condition, target quantity, and delivery plan. We will match the model, technical document, and quotation path for your project.

Engineer-assisted selection

01How does Kaiyue control the raw material quality of RC reverse circulation drill pipe?

All steel materials are purchased from qualified large steel mills, and each batch is inspected after arrival before it is released for production.

02What steel is used for the body of RC reverse circulation drill pipe?

Body material is selected for the specific model, connection, and working conditions, and must match the approved product specification and quality records.

03Why are the pipe ends of RC reverse circulation drill pipe upset and thickened?

The upset ends increase the friction-welding contact area, helping improve joint strength and reduce the risk of connection fracture.

04How are the friction-welded areas of RC reverse circulation drill pipe treated?

All friction-welded areas are tempered after welding to reduce internal stress and improve long-term structural stability.

05What material is used for the coupling of RC reverse circulation drill pipe?

Coupling material and heat treatment are selected for the specific model and operating conditions and must match the approved product specification and inspection records.

06How is the coupling hardness verified?

Core and surface hardness must be tested against the inspection specification for the corresponding model. The approved technical document and batch quality record define the applicable range.

PRODUCT SUPPORT

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Add this product to your inquiry list, then send one request with quantity, application, and destination. The sales and technical team can respond with clearer pricing and configuration advice.

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