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FAQ CENTER

Frequently Asked Questions

Review FAQ answers on drilling tool selection issues, inquiry details, project order delivery, customization, and material process questions. Open the guide.

FAQ CENTER

Find answers based on business scenarios.

We compile frequently asked questions regarding product selection, delivery, after-sales service, and spare parts to help customers find answers more quickly.

Product Selection
Payment for shipping
After-sales service
Spare parts and consumables
1What information should we provide before requesting a quote?

To receive a timely and effective response, we recommend providing the following information when requesting a quote:

  • Hole diameter or drilling requirements
  • Rock hardness or strata conditions
  • Equipment Model
  • Target product model or current specifications
  • Purchase quantity
  • Destination country / Delivery country

If you can also attach photos of the site, the dimensions of the current products, or drawings, it will usually be more helpful for us to make selection and pricing decisions.

2Does Far Eastern Air Transport support project orders and export delivery?

Supported. The website clearly states that Yuanhang supports project orders and export delivery.

According to publicly available data, Far Eastern Air Transport's business covers more than 20 export countries and regions. For project-based orders, we will combine work condition confirmation, solution matching, production testing and packaging arrangements, and try our best to take into account delivery schedule, compatibility solutions and batch stability.

3If we have specific working conditions or customized needs, how can Far East Port cooperate?

Yes. Far East focuses more on the actual construction conditions of customers, rather than just providing a list of models.

Typically, the working conditions are first determined based on the borehole diameter, rock formation, equipment, and delivery location. Then, a complete set of matching components is made around drill pipes, drill bits, connectors, and material grades. Finally, standardized production, testing, and packaging processes support project delivery.

If your project has special working conditions, size requirements, or complete set of accessories, we suggest you explain them in your inquiry so that we can provide more targeted suggestions.

4How do you guarantee product quality and stability?

Far Eastern Air Transport emphasizes that stable delivery comes from enforceable production standards and process re-inspection, rather than relying solely on the final inspection.

  • Raw material batch traceability and warehousing inspection
  • Friction welding, heat treatment, and precision machining process control
  • Re-inspection of thread accuracy, coaxiality, and surface quality

The purpose of this process is to ensure that different batches of products maintain consistency in connection strength, interchangeability, and field durability.

5What materials and manufacturing processes are commonly used in long-distance voyages?

According to the publicly available information on the site, Kaiyue commonly uses high-strength alloy steel materials such as 55SiMnMo, 35CrMo, and 42CrMo, and will optimize the structure and heat treatment according to different working conditions.

In terms of manufacturing processes, key capabilities include stable connection processes for dissimilar materials, as well as standardized processing and re-inspection of threads, joints, and critical dimensions. Our goal is not simply to produce products, but to make drilling tools more suitable for continuous field operations in terms of strength, interchangeability, and wear resistance.

6What drilling tools do you mainly provide?

Yuanhang's current product focus is mainly on application scenarios such as down-the-hole drilling, water well drilling, reverse circulation drilling, and rotary drilling, providing suitable drilling tool combinations.

Specifically, this includes down-the-hole drill pipes, water well drill pipes, reverse circulation drill pipes, rotary drilling pipes, and various special drilling tools. We focus more on drilling efficiency, connection strength, and field durability, so our product portfolio is tailored to different construction scenarios rather than offering only a single specification.

7What kind of company is Far Eastern Air Transport?

Yuanhang Yushang (Beijing) Technology Co., Ltd. is a comprehensive engineering machinery manufacturing enterprise integrating design, research and development, production and sales, and has long been deeply involved in the fields of rock and soil tunneling and water well drilling.

The company focuses on the research and development and manufacturing of down-the-hole drill pipes, water well drill pipes, reverse circulation drill pipes, rotary drilling drill pipes, and various special drilling tools, providing customers with stable and reliable drilling tool solutions. According to currently available information on this site, Kaiyue has an annual production capacity of over 300,000 drill pipes and has accumulated over 15 years of manufacturing experience.

1What information should I provide before requesting a quotation?
To get a faster response, please fill in the aperture, rock hardness, equipment model, quantity, and country of delivery.
Operating parameters: borehole diameter, rock strata, depth, equipment model
Drawings, sample photos, current drill pipe specifications, thread type, and destination port also help us confirm the configuration and quotation faster.
2How do I know which drill pipe or drilling tool fits my working condition?
Submit the borehole diameter, rock formation, equipment model, and target working conditions to help determine if the drilling tool series is compatible.
Based on the borehole diameter, depth, rock formation, and equipment conditions, a matching drill string combination is recommended.
Products can be selected based on equipment interface, aperture range, rock strata conditions, and construction depth.
3What drilling tool products does Kaiyue mainly provide?
The company focuses on the research and development and manufacturing of down-the-hole drill pipes, water well drill pipes, reverse circulation drill pipes, rotary drilling pipes and various special drilling tools, providing customers with stable and reliable drilling tool solutions.
From connection method and material strength to construction adaptability, quickly locate and match the drilling tool series for the current project.
4How does Kaiyue control product quality and stability?
From raw material batch traceability, heat treatment, welding or precision machining, to thread accuracy, coaxiality and appearance re-inspection, key links are controlled according to the process.
Quality control: material, heat treatment, welding or machining precision
Verify the model, quantity, appearance, and key dimensions to confirm that the delivery requirements are met.
5What material and process points matter for drill pipe production?
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.
6Does Kaiyue support non-standard sizes or project customization?
Please send the borehole diameter, rock strata, depth, equipment model, quantity, and delivery country first. The engineering team will then determine the product series, dimensions, and delivery plan based on the working conditions.
The team will recommend matching drill bits, drill rods, shanks, and related accessories.
Send us the borehole diameter, rock formation, equipment model, and project country, and we will assist in recommending a more suitable product combination.
7Why can reverse circulation drill pipe improve cuttings return and sampling?
Blue indicates compressed air descending, while orange indicates gas and rock cuttings returning upwards along the central inner tube, suitable for deep hole and complex formation construction.
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.
8When should I choose non-magnetic stainless reverse circulation drill pipe?
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.
9How are order delivery, packing, and export documents arranged?
Verify the model, quantity, appearance, and key dimensions to confirm that the delivery requirements are met.
Depending on the product weight and transportation method, wooden crates, pallets, or reinforced packaging are used.
Photos are taken during the container loading process so that customers can remotely check the status of their goods.
Prepare invoices, packing lists, and shipping-related documents in accordance with order requirements.
10What after-sales support is available after delivery?
Provides operational precautions, maintenance suggestions, and remote technical communication.
Upon receiving the on-site issue, the sales and technical teams collaborated to analyze it and provide solutions.
Send us your equipment model, drilling conditions, or procurement plan, and our engineers will provide more specific advice.
11How should spare parts and consumables be confirmed?
Prepare spare parts such as drill pipes, drill bits, and connectors for commonly used models.
Please provide the current tool model, connection type, working wear condition, quantity, and rig model so we can check compatibility and replenishment plans.
12How can I verify Kaiyue factory capability and cooperation reliability?
Collaborative verification: Qualifications and patents, VR factory audit, product details
Yes, we can assist clients with import arrangements and project delivery by providing support for bulk orders, export packaging, container loading records, and related documentation.
Customers can combine product details, qualification information, VR factory viewing, loading photos, and trial orders to verify production and delivery capability.
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