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Кованые буровые штанги HDD

  • Ковка с переворачиванием — плавная переходная зона снижает концентрацию напряжений; автоматизированная система ковки → 6 совершенно новых гидравлических ковочных прессов
  • Мелкозернистая сталь S135 — мелкозернистая сталь марки S135; механические свойства проверяются путем разрушающих испытаний каждой партии → обязательный контроль каждой партии
  • Контроль 100% — физический и неразрушающий контроль каждого конца поковки 100%; отсутствие внутренних дефектов → стандарт «нулевого дефекта»
  • Устойчивость к усталостному износу — предназначена для проектов, требующих высокого крутящего момента и длительной эксплуатации; закалка и отпуск 100% на собственном производстве → увеличенный срок службы
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HDD DRILL RODS

Forged HDD
Drill Rods

High-performance forged drill rods for horizontal directional drilling.
Built for long-distance, large-diameter and high-load HDD projects where fatigue resistance, joint integrity and process control matter.

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View Specifications
UPSET FORGED
Serial-linked data
FINE-GRAINED S135
Fine-grained steel
100% INSPECTION
Physical + NDT
FATIGUE-RESISTANT
Smoother transition
WHY FORGED

The Difference Is in the Forged Section

From the outside, one forged pipe looks much like another. The differences are all on the inside, where failure to control the key processes of forging and heat treatment can have disastrous consequences. North Star’s rigorous quality management ensures consistent high performance from this premium product.
Our smooth forge transition zone reduces stress concentration at the critical weld area — the region where fatigue failure most often begins.
01

Зона плавного перехода в Фордже

Our smooth forge transition zone reduces stress concentration at the critical weld area — the region where fatigue failure most often begins.
02

Мелкозернистая сталь S135

Our forged rods use fine-grained S135 steel that ensures superior fatigue resistance and long service life.
03

Controlled Heat Treatment

Heat treatment is conducted 100% in-house using custom-built quench-and-temper furnaces specifically designed for HDD pipes.
04

100% Inspection

Every forged end receives physical and non-destructive inspection before release, backed by a quality report.

MANUFACTURING & QC

Controlled from Raw Material to Final Release

North Star combines dedicated upset forging, in-house heat treatment, laboratory testing and full traceability to control the processes that define forged pipe performance.

01 Raw Material
Every batch inspected on receipt.

02 Upset Forging
Six hydraulic forges + automated handling.

03 Heat Treatment
100% in-house quench and temper.

04 Testing
Post-treatment testing in our laboratory.

05 100% Inspection
Physical + non-destructive inspection.

06 Traceability
Work and serial numbers link production data.

PRODUCT & MATERIAL

Built around the rig and connection

Строительство
Upset forged

Steel
Fine-grained S135

Heat Treatment
100% in-house quench and temper

Inspection
100% physical and non-destructive inspection of every forged end

Traceability
Work number + serial number

SPECIFICATIONS

HDD Drill Rod Specifications

For accurate selection, confirm the rig model, current pipe source, pipe body OD, overall length, tool joint OD, thread details and serial number.

Key selection parameters
Torque · Bend radius · Tensile strength · Yield strength · Fatigue resistance · Thread · Connection · Dimensions

Exact drill rod sizes and connection configuration should be verified from the rig model or existing pipe information.

APPLICATIONS

Built for Demanding HDD Work

Forged HDD drill rods are designed for applications where distance, torque, formation and fatigue life influence rod selection.
01

Long-Distance & Large-Diameter HDD

Rivers, highways and railways where long strings and cyclic loading demand dependable fatigue performance.
02

High-Torque, High-Thrust HDD Rigs

Typically 40 tons and above, where torque, thrust and joint integrity matter.
03

Complex & Abrasive Formations

Cobbles, shale, hardpan and other demanding formations.
04

Critical Infrastructure

Projects where downtime is costly and consistent performance matters.
05

Maximum Fatigue Resistance

Projects requiring maximum fatigue resistance and extended service life.
COMPARE

Forged vs Welded HDD Drill Rods

Choose the construction according to load level, distance, formation and project priorities.
FORGED

Кованые буровые штанги HDD

Best for: High-load, long-distance, complex formations, premium projects.
Joint process: Upset forging — smoother transition, lower stress concentration.
Steel grade: Fine-grained S135, 100% inspection of forged ends.
Price point: Premium.

WELDED

Welded HDD Drill Rods

Best for: General projects, budget-sensitive applications, normal soil conditions.
Joint process: Friction welding — proven, cost-effective.
Steel grade: S135, heat-treated joints.
Price point: More competitive.
Need help choosing?
Contact our sales team for a free recommendation.
View Welded HDD Rods
SELECTION GUIDE

How to Choose HDD Drill Rods

Use the following information to confirm a compatible HDD drill rod configuration.
01

Confirm your rig model

Check the nameplate on your HDD rig.
02

Note your current pipe source

Was it purchased with the rig or separately? Note the manufacturer if possible.
03

Record key dimensions

Pipe body OD (A), length (L), tool joint OD (B), and pin thread length (C).
04

Find the serial number

Located on the pin or box joint, this helps us verify exact specifications.
SERVICE & SUPPORT

Support Beyond the Product

North Star provides technical support, customization and traceability from inquiry through final inspection.
PRODUCTION CAPACITY

400,000+

pipes annually across two facilities

6

new hydraulic forges dedicated to forged pipe production

Quality Guarantee

All products are fully guaranteed against defects in materials or workmanship.

Customisation

Non-standard lengths, special thread connections, hard-facing and custom wrenching configurations available upon request.

Technical Support

Multilingual team available for enquiries; engineers can be sent onsite for study and training if necessary.

100% Traceability

Every pipe carries a serial number enabling full traceability from raw material to final inspection.

Continuous Testing Programme

We implement a unique continuous testing programme, allowing objective evaluation of new processes and products before final approval.
Часто задаваемые вопросы

Forged HDD Drill Rods: Common Questions

Clear answers to common product, selection and compatibility questions.

What are forged HDD drill rods?

Forged HDD drill rods use an upset forging process to form the connection section. A controlled forged transition can help reduce stress concentration in critical areas.

What is the difference between forged and welded HDD drill rods?

Forged rods are aimed at demanding applications with high loads, long drilling distances and fatigue requirements. Welded rods are often selected for general applications where cost efficiency is a higher priority.

Are forged HDD drill rods stronger?

Performance depends on the complete design, including steel grade, heat treatment, connection geometry and manufacturing quality. North Star combines fine-grained S135 steel with controlled forging and inspection.

How do I choose the right HDD drill rod?

Start with the HDD rig model, rod diameter and length, connection, torque, bend radius, drilling distance, ground conditions and expected drilling cycles.

Can North Star supply drill rods for Vermeer and Ditch Witch rigs?

Yes. North Star Forged HDD Drill Rods are compatible with major HDD rig brands including Vermeer and Ditch Witch, as well as XCMG, DW-TXS, Goodeng, Drillto, Hanlyma and Dilong. Exact compatibility should be verified from the rig model and rod dimensions.

Can North Star manufacture custom HDD drill rods?

Yes. Available customization can include non-standard lengths, special thread connections, hard-facing and customized wrenching configurations.
FORGED HDD DRILL RODS

Need the Right HDD Drill Rod Configuration?

Send your rig model, current rod dimensions, thread details and serial number. Our team can help verify the correct specification for your application.
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Explore More HDD Drill Rod Options

Compare forged and welded HDD drill rods when selecting the right construction for your project.
Welded HDD Drill Rods

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