Drill String Assembly

Assembly

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Threaded rod sections connected end-to-end that transmit torque and axial loads from spindle to bit.

Direct parts	4
Total parts	4
Used in	1 assembly
Class	Assembly

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Threaded rod sections connected end-to-end that transmit torque and axial loads from spindle to bit. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Drill String Assembly parts and their functions

4 top-level parts · 4 parts in total · full bill of materials below

Drill String Assembly parts diagram: 1 kelly drive rod, 2 drill pipe extension sections, 3 pilot hole bit, 4 drill pipe protector sleeve. 4 parts in 4 top-level items. — Drill String Assembly parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Kelly Drive Rod	1×	Drive section with key drive interface
2	Drill Pipe Extension Sections	1×	Drill pipe sections with connections
3	Pilot Hole Bit	1×	Small diameter pilot hole cutter
4	Drill Pipe Protector Sleeve	1×	Protective sleeve around rod

3D model

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Build & assembly graph

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Bill of materials for Drill String Assembly

4 top-level lines · 4 rows shown · 4 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Kelly Drive Rod	raise-borer-kelly-rod	1×	1	·	part
2	Drill Pipe Extension Sections	raise-borer-extension-rods	1×	1	·	part
3	Pilot Hole Bit	raise-borer-pilot-bit	1×	1	·	part
4	Drill Pipe Protector Sleeve	raise-borer-rod-protector	1×	1	·	part

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Where the drill string assembly is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Construction & Earthmoving 1 Raise Boring Machine

Used in 1 assembly

Raise Boring Machine

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$100. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇨🇳Foxconn foxconn.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Flex (Singapore) flex.com ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks
🇮🇳Dixon Technologies dixoninfo.com ↗	Noida, IN	Electronics contract mfg	1,000 pcs	6–10 wks
🇨🇳BYD Electronics bydelectronic.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Venture Corp venture.com.sg ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks