よくある質問

For a faster reply, please provide hole diameter, rock hardness, rig model, quantity, and destination country.
Working condition parameters: hole diameter, formation, depth, and rig model.
Drawings, sample photos, current drill pipe specifications, thread type, and destination port also help us confirm the configuration and quotation faster.

Submit the hole diameter, formation, rig model, and target working condition so we can judge whether the product series is suitable.
Recommend suitable drilling tool combinations based on hole diameter, depth, rock formation, and equipment conditions.
Products can be filtered by equipment connection, hole diameter range, formation condition, and drilling depth.

Kaiyue focuses on DTH drill pipes, water well drill pipes, reverse circulation drill pipes, rotary drilling pipes, and custom drilling tools.
From connection types and material strength to jobsite suitability, the product center helps customers locate suitable drilling tool series.

Key processes are controlled from material traceability, heat treatment, welding or precision machining to thread accuracy, coaxiality, appearance, and final inspection.
Quality control: material, heat treatment, welding, or machining precision.
Verify model, quantity, appearance, and key dimensions before shipment.

Steel materials are sourced from qualified large steel mills and inspected by batch. Kaiyue drill pipe bodies can use R780 steel with upset and thickened ends to increase the friction-welding contact area. Friction-welded areas are tempered to reduce internal stress, while 42CrMo couplings are heat treated and deeply nitrided; the core hardness is about HRC 34 and the nitrided surface can reach about HRC 57.

Send the hole diameter, formation, depth, equipment model, quantity, and delivery country. Our engineering team will review the product series, dimensions, and delivery plan.
The team will recommend matching drill bits, drill pipes, shanks, and related accessories.
Send hole diameter, formation, equipment model, and project country so we can help recommend a suitable product combination.

Compressed air goes down through one channel while gas and cuttings return through the central inner tube, which suits deep-hole and complex-formation drilling.
The double-wall structure separates the inner and outer flow paths, so cuttings return rapidly through the inner tube. This helps reduce blockage, lower stuck-drilling risk, and keep samples cleaner by avoiding mixed layers.

It is suitable for RC sampling, mineral exploration, directional drilling, and deep hard-rock projects that require clean samples, corrosion resistance, and low magnetic interference. The non-magnetic version has very low magnetic permeability and is compatible with MWD/LWD directional measurement environments.

Factory inspection checks model, quantity, appearance, and key dimensions.
Wooden crates, pallets, or reinforced packaging are used depending on product weight and transportation method.
Photos are kept during container loading so clients can remotely confirm cargo status.
Invoices, packing lists, and shipping-related documents are prepared according to order requirements.

Provide operating precautions, maintenance suggestions, and remote technical communication.
After receiving onsite issues, the sales and technical teams work together to analyze them and provide handling suggestions.
Send your equipment model, drilling conditions, or purchase plan, and our engineers will provide more specific suggestions.

Prepare drill pipes, drill bits, adapters, and other matching spare parts for common models.
Please provide the current tool model, connection type, working wear condition, quantity, and rig model so we can check compatibility and replenishment plans.

Cooperation verification: certifications and patents, VR factory tour, and product details.
We support batch orders, export packing, loading records, and document preparation to help customers arrange import and project delivery.
Customers can combine product details, qualification information, VR factory viewing, loading photos, and trial orders to verify production and delivery capability.