Products Description
The YNJG180 Automatic Pre-tightening Unit is a professional thread protector bucking machine specially developed for oilfield tubing and casing operations. It is designed to automatically install thread protectors after casing/tubing threading, automatically apply thread compound, and integrate weighing and length measuring functions. It is applicable to pipes with outer diameter of Ø60–Ø180mm.
Supporting round thread, buttress thread, and special thread types, this automatic pre-tightening unit delivers maximum torque of 400 N·m with hydraulic system pressure of 5–10 MPa. The production capacity reaches 60–100 pipes per minute, significantly improving post-threading efficiency and protecting pipe threads from damage during storage and transportation.
Key Features & Specs
Automatic Thread Compound Application
Integrated automatic tubing and casing thread oiling system evenly applies thread compound to pipe ends, ensuring consistent lubrication and corrosion protection for every thread.
Thread Protector Automatic Bucking
Automatically installs thread protectors onto pipe ends after threading, protecting API threads from mechanical damage during handling, storage, and transport.
Integrated Weighing & Length Measuring
Built-in weighing and length measuring functions provide complete data logging for each pipe, supporting quality traceability and inventory management.
Wide Thread Type Compatibility
Supports round thread, buttress thread, and special thread types, making it suitable for various API and premium connection specifications.
High Efficiency & Reliable Performance
Production capacity of 60–100 pipes per minute with hydraulic system pressure of 5–10 MPa and maximum torque of 400 N·m. Equipped with stepping machine, clamping device, and complete control system for stable operation.
Equipment Parameters
| Specification | Value |
|---|---|
| Model | YNJG180 |
| Tightening range | Ø60–Ø180 mm tubing and casing |
| Max. Torque | 400 N .M |
| Hydraulic system pressure | 5–10 MPa |
| Production capacity | 60–100 pipes per minute |
| Applicable thread types | Round thread, Buttress thread, Special thread |
| Motor power | 70 kW |
I. YNJG180 Automatic Pre-tightening Unit Structures and Features
1. Overview
The YNJG180 Automatic pre-tightening unit is mainly used to automatically install thread protectors after casing/tubing threading, automatically apply thread compound, and integrate weighing and length measuring functions.
2. Main Parts of YNJG180 Automatic pre-tightening unit
1) Automatic tubing and casing thread oiling system
2) Main body of the thread protector bucking machine
3) Thread protector feeding and lifting conveyor
4) Clamping device
5) Hydraulic unit
6) Stepping machine
7) Control system
II. Referenced Images of YNJG180 Automatic pre-tightening unit



FAQ
Q1. What pipe sizes can the YNJG180 automatic pre-tightening unit handle?
A1. The YNJG180 automatic pre-tightening unit is suitable for tubing and casing pipes with outer diameter from Ø60mm to Ø180mm, covering most common oilfield pipe sizes.
Q2. What thread types does this thread protector bucking machine support?
A2. This thread protector bucking machine supports round thread, buttress thread, and special thread types, making it compatible with API and premium connection specifications.
Q3. What is the production capacity of this automatic pre-tightening unit?
A3. The production capacity reaches 60–100 pipes per minute, significantly improving post-threading efficiency for oilfield pipe production and repair lines.
Q4. What functions are integrated into this tubing casing thread oiling system?
A4. This system integrates automatic thread compound application, automatic thread protector installation, weighing, and length measuring functions, providing complete post-threading processing in one unit.
Q5. What are the power and torque specifications of the YNJG180?
A5. The YNJG180 is equipped with 70kW motor power, delivers maximum torque of 400 N·m, and operates at hydraulic system pressure of 5–10 MPa.
Boyu Petroleum Equipment has more than 30 years of rich experience in independent research, development and production of oilfield equipment. Our main products cover automatic pre-tightening units, ,steel pipe hydrostatic testing machines, hydraulic bucking units, pipe straightening machines and other professional oilfield equipment.
If you are in need of reliable automatic thread protector installation equipment and complete tubing & casing post-threading solutions, please feel free to contact us to obtain detailed technical parameters and official YNJG180 product quotation.
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