Tuofeng TFW-297 Microcomputer-Controlled Electronic Universal Testing Machine
| Brand | Tuofeng |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | TFW-297 |
| Price Range | USD 1,400 – 14,000 |
| Instrument Type | Electromechanical Universal Testing Machine |
| Load Capacity | 300 kN |
| Load Accuracy | ±0.5% |
| Accuracy Class | 0.5 |
| Effective Force Measurement Range | 0.2%–100% of Full Scale |
| Force Resolution | 1 part in ±500,000 (full-scale, unsegmented) |
| Drive System | Imported Servo Motor with Worm Gear Reducer |
| Lead Screw | High-Precision Ball Screw |
| Effective Test Width | 600 mm (customizable) |
| Maximum Stroke | 800 mm (extendable) |
| Speed Range | 0.001–500 mm/min (infinitely variable) |
| Displacement Measurement | Optical Encoder |
| Displacement Accuracy | ±0.005% of reading |
| Strain Measurement | Optional Extensometer or Large-Deformation Sensor |
| Strain Accuracy | ±0.005% of reading |
| Safety Protection | Electronic Limit Switches, Emergency Stop, Overload Protection (10% above capacity) |
| Crosshead Adjustment | Dual-Speed Motorized (Fast/Slow), Point-to-Point Control |
| Return Function | Automatic or Manual High-Speed Return to Initial Position |
| Fixture Customization | Application-Specific Clamping Solutions |
| Power Supply | 220 V, 3.0 kW |
| Dimensions (W×D×H) | 1100 × 900 × 2600 mm |
| Weight | ~1500 kg |
| Compliance | GB/T 16491–2008, JJG 475–2008, ASTM E4, ASTM E8, ASTM D638, ISO 6892-1, ISO 7500-1, DIN 51221, JIS Z2241, BS EN 10002-1 |
Overview
The Tuofeng TFW-297 is a high-capacity, microcomputer-controlled electromechanical universal testing machine engineered for precision mechanical property evaluation of structural and functional materials. It operates on the principle of controlled displacement actuation via a servo-driven ball-screw system, enabling accurate force application and real-time measurement of load, displacement, and strain under standardized quasi-static loading conditions. Designed specifically for pipe material qualification—especially seamless steel pipes, PVC conduits, HDPE pressure pipes, and composite-reinforced tubing—the TFW-297 delivers repeatable tensile strength, yield behavior, elongation at break, and modulus data essential for compliance with pipeline integrity standards. Its rigid C-frame architecture, integrated overload protection, and dual-speed crosshead control ensure operational safety and long-term metrological stability across industrial QA/QC and R&D environments.
Key Features
- 300 kN maximum load capacity with ±0.5% force accuracy and 0.5-class system certification per GB/T 16491–2008 and ISO 7500-1
- Unsegmented force resolution of 1 part in ±500,000 full scale, eliminating range-switching artifacts during low-load or high-resolution tests
- High-precision ball screw transmission paired with imported servo motor and worm gear reducer for smooth, backlash-free motion control
- Dual-mode crosshead adjustment: fast positioning (up to 500 mm/min) and fine-tuning (<0.01 mm/min) for optimal alignment of pipe specimens prior to clamping
- Comprehensive safety architecture including electronic limit switches, hardware emergency stop, and automatic shutdown at 110% overload
- Modular extensometry support: compatibility with clip-on axial extensometers (for yield point detection) and large-deformation sensors (for ductile pipe burst analysis)
- Thermally stable cast-iron base and reinforced steel frame minimizing vibration-induced noise in displacement feedback loops
Sample Compatibility & Compliance
The TFW-297 accommodates cylindrical pipe specimens up to Ø350 mm outer diameter and wall thicknesses from 1.5 mm to 40 mm using custom-designed split-collar grips with radial pressure distribution. For longitudinal tensile testing, standard pipe coupons are sectioned per ASTM A370 or ISO 6892-2; for ring-tensile and flattening tests, dedicated fixtures conform to GB/T 246, ASTM E290, and EN 10246-8. The system meets metrological traceability requirements under JJG 475–2008 and supports audit-ready documentation for GLP, GMP, and ISO/IEC 17025-accredited laboratories. All test protocols align with mandatory regulatory frameworks including ASME B31.4/B31.8, API RP 5L, and PED 2014/68/EU Annex I essential safety requirements.
Software & Data Management
Tuofeng’s proprietary TESTMaster v5.2 software runs natively on Windows 10/11 and provides full 21 CFR Part 11-compliant user access control, electronic signatures, and audit trail logging. It supports six real-time display modes—including stress–strain, load–displacement, and load–time—and enables automated calculation of tensile strength (Rm), yield strength (ReH/Rp0.2), total elongation (At), uniform elongation (Ag), and reduction of area (Z). Raw data exports to CSV, XML, and PDF formats; curve overlays allow comparative analysis across batch-lot pipe samples. The software includes built-in modules for ASTM E8/E21 fracture toughness pre-screening and ISO 1133-1 melt flow index correlation mapping. Firmware and application updates are delivered remotely with version-controlled release notes and validation reports.
Applications
- Tensile testing of welded and seamless steel pipes per ASTM A106/A53 for yield ratio (ReH/Rm) verification and strain hardening exponent (n-value) derivation
- Flattening resistance assessment of aluminum alloy tubes (EN 755-2) under controlled displacement rates
- Burst pressure simulation via constant-rate compression of pipe rings per ISO 8503-2
- Creep compliance evaluation of thermoplastic piping systems (PE-RT, PEX-a) using load-hold protocols at elevated temperatures (with environmental chamber integration)
- Adhesion strength quantification of fusion-bonded epoxy (FBE) coatings on carbon steel substrates using pull-off testing fixtures
- Quality gate screening for offshore riser components subject to cyclic bending fatigue prequalification per DNV-RP-F105
FAQ
What standards does the TFW-297 support for pipe-specific testing?
It fully implements ASTM A370, ASTM E8, ISO 6892-2, GB/T 228.1, GB/T 246, EN 10246-8, and API RP 5L for dimensional, mechanical, and process qualification of metallic and polymeric pipes.
Can the system perform ring-tensile tests on small-diameter pipes?
Yes—optional ring-tensile fixtures accommodate pipe diameters from 12 mm to 250 mm with adjustable mandrel geometry and hydraulic clamping force calibration.
Is the software validated for regulated industries such as oil & gas or medical device manufacturing?
TESTMaster v5.2 includes IQ/OQ documentation templates, 21 CFR Part 11 configuration files, and third-party validation support packages compliant with FDA, Notified Body, and CNAS requirements.
How is thermal drift compensated during extended-duration pipe creep tests?
The system integrates optional temperature-compensated load cell signal conditioning and real-time zero-tracking algorithms synchronized with ambient sensor inputs to maintain <±0.1% drift over 100-hour holds.
Does Tuofeng provide installation and operator certification services?
Yes—on-site commissioning, metrological verification, and ISO/IEC 17025-aligned operator training programs are available globally through authorized service partners.
