Match the equipment family to the job
Sanrock identifies Quzhou Sanrock Heavy Industry Machinery Co., Ltd and says it was founded in 2017. Its navigation separates mine blasting, water-well, underground and engineering equipment. [1] [2] These categories should remain separate when shortlisting a supplier.
Water supply or geothermal borehole
The water-well range separates crawler, truck and trailer arrangements. Define bore diameter, target depth, anticipated formations and drilling/flushing method before comparing carriers.
Blasting or underground drilling
DTH, top-hammer and underground-jumbo families address different working arrangements. A water-well depth headline does not describe a blasting rig’s pattern or an underground machine’s access envelope.
Foundation and construction work
Solar-pile, rotary and other engineering-drilling entries need their own foundation or installation requirements. Do not transfer a water-well rig’s figures into a piling selection.
For the recorded crawler product, the detailed source labels an SR350 illustration and gives a 350 m depth with a 140–325 mm hole range. [3] It does not explain a depth-versus-diameter or formation envelope. The individual rig guide separates these reported figures from unresolved operating conditions.
What the company describes assembling
Use process descriptions to plan qualification.
The company page describes assembly and pre-delivery testing of screw/piston compressors, assembly of split blasting and water-well rigs, and DTH-hammer production. It also shows workshop and aerial imagery. [1] These are manufacturer statements; we have not visited the workshops or witnessed the tests.
- Air-compressor workshop
- Ask which proposed compressor is assembled and tested there, and obtain its actual pre-delivery test schedule and report.
- Split-rig workshop
- Confirm the ordered model’s assembly location, controlled configuration, hydraulic checks and serialized acceptance record.
- DTH tooling
- Resolve hammer/bit/pipe interfaces, consumables and the air-demand basis for the complete string.
The page claims 50-plus compressors and 20-plus split rigs per week, and a 120,000 m² site. These are not audited available-capacity or delivery commitments. Request the order’s production slot, inspection milestones and dispatch date. The “19 years” counter is not reconciled with the stated 2017 founding date; it is not used as the company’s verified age.
One offer, with visible package boundaries
A rig-only offer and a working drilling spread are different purchases. The company sells compressors and tools separately; the 350 m page links compressor products but does not establish their inclusion. [2] [3]
| Package line | Ask the quotation to identify | Acceptance record |
|---|---|---|
| Rig and carrier | Exact model/revision, engine, mast arrangement, carrier and transport state. | Serial identity, agreed functional checks and configuration list. |
| Compressor and air circuit | Selected unit, delivered flow at working pressure, site conditions, hoses and connections. | Matched duty basis and defined operating limits. |
| Drill string and bits | Hammer/bit, pipe diameter/length/connections and included quantities. | Interface schedule and initial consumable/spare list. |
| Other flushing arrangement | Equipment required by the proposed method; pumps or other utilities only if specified. | Method-specific supply and commissioning responsibility. |
| Commissioning and support | Site preparation, unloading, setup, training, manuals and service scope. | Written handover criteria, exclusions and support contacts. |
For the 350 m entry, Sanrock reports 1.7–3.3 MPa air pressure and 17–35 m³/min air consumption. This does not identify a compressor model or establish simultaneous minimum/maximum duty points. Quote the selected combination against the intended drilling method rather than combining unrelated catalogue maxima.
Access and commissioning belong in the purchase
- 1
Describe the site before selecting the carrier
Provide approach/access dimensions, ground conditions, working space and transport/unloading arrangements. The reviewed rig lists 5,900 × 2,000 × 2,850 mm and 9,000 kg without clearly defining the transport configuration; obtain a dispatch drawing.
- 2
Agree what a successful handover means
Separate factory function tests from site commissioning and any agreed drilling trial. State conditions, instrumentation, responsibilities and the evidence required to accept the actual package.
- 3
Keep maintenance within the offered configuration
Request engine and compressor service requirements, hydraulic consumables, wear-tool identification, manuals and spare availability for the ordered model. A catalogue statement of easy maintenance is not a downtime guarantee.
External reporting adds context, not a test result
A 24 April 2026 International Business Daily report, republished on Shanghai’s government overseas-service platform, names 衢州三石重工机械有限公司 in a Canton Fair discussion with a Mexican buyer. It reports a custom-application proposal and a contract. [4] The report does not identify a delivered rig, drilling conditions, commissioning result or settled payment; it is not performance evidence for the crawler model.
The company says it has ISO 9001 and CE certificates. [1] We have not authenticated issuer, holder/site, scope or current validity. Request the quality-system certificate and destination/model-specific conformity documents separately. No verified-certificate badge or platform factory-audit claim is assigned.
Prepare a drilling-spread brief
Sources for this company
- Sanrock company, workshops and certification section
Supplier identity, 2017 founding statement and described compressor/rig assembly and DTH-hammer activity. Capacity and certificate claims are not independently audited.
Checked: 2026-10-11 - Sanrock equipment navigation
Distinct drilling applications, carrier arrangements, compressor and tool families; historical news is not a current offer.
Checked: 2026-10-11 - 350 m crawler water-well rig detail
Directly read geometry, air requirement and drivetrain figures, plus ambiguous power, climb-angle and pipe-diameter wording. No site-specific depth guarantee.
Checked: 2026-10-11 - Shanghai overseas-service platform: International Business Daily report
24 April 2026 report naming 衢州三石重工机械有限公司 in a Canton Fair custom-application discussion and reported contract. No delivered-machine or borehole acceptance evidence.
Checked: 2026-10-11