Roll Cages and Chassis Fabrication
Chromoly tubing is used for fabricated chassis, roll-cage structures, suspension links, and protective frames where the tube size, wall, weld procedure, and joint design must be engineered together.
0.750 x 0.125 / 6.0 - 50.0RELATED PRODUCT
CMT-12-125 4130 Chromoly Tubing
Part No.: CMT-12-125
· Thread-adjustment and fabrication hardware series
✓ ISO 9001 Certified
✓ SGS Verified
✓ 26+ Years Factory
✓ OEM / ODM Ready
Tubing OD & Wall 0.750 x 0.125
Length Range 6.0 - 50.0 in.
4130 chromoly steel for chassis and structural fabrication
Cut-to-length tubing with standard and special size support
Suitable for suspension links, cages, frames, and custom tube assemblies
Material
4130 chromoly steel (other materials like 4140, 4340 available)
Tolerance
Cut length +/- .090"
⚡ Typically responds within 24 hours
MOQ:50 pcs / model
Lead Time:7–15 days
Sample:Free (excl. freight)
Payment:T/T · PayPal · L/C
Overview
CHROMOLY TUBING Product Overview
CMT-12-125 is a section of 4130 chromoly steel tubing with 3/4″ OD and 0.125″ wall thickness (ID ≈ 0.5″). Cut to length from 6″ to 50″ (±0.090″ tolerance). Sold by the piece at the specified length.
4130 chromoly steel combines high tensile strength with good weldability, making it the standard material for lightweight, high-strength chassis tubes, suspension links, and push rods in racing, off-road, and industrial applications. Pair with WTF tube adapters (female-end inserts) and BAN bung adjuster nuts to build complete adjustable linkage assemblies.
4140 and 4340 chromoly options available in volume. DOM mild steel available on request. Hex wrench sections (weld-on wrench hexes) available to add mid-tube adjustment points.
Size Chart
CHROMOLY TUBING Series — Full Size Range
All available sizes in the CHROMOLY TUBING series. Can’t find your size? Contact us for custom dimensions.
| Part Number | Tubing OD & Wall Thickness | Length Range | Weight Range |
|---|---|---|---|
| CMT-6-058 | 0.375 x 0.058 | 6.0 - 50.0 | 0.116 - 0.928 |
| CMT-8-058 | 0.500 x 0.058 | 6.0 - 50.0 | 0.155 - 1.240 |
| CMT-8-065 | 0.500 x 0.065 | 6.0 - 50.0 | 0.173 - 1.384 |
| CMT-10-058 | 0.625 x 0.058 | 6.0 - 50.0 | 0.193 - 1.634 |
| CMT-10-065 | 0.625 x 0.065 | 6.0 - 50.0 | 0.217 - 1.736 |
| CMT-12-058 | 0.750 x 0.058 | 6.0 - 50.0 | 0.232 - 1.856 |
| CMT-12-065 | 0.750 x 0.065 | 6.0 - 50.0 | 0.260 - 2.080 |
| CMT-12-095 | 0.750 x 0.095 | 6.0 - 50.0 | 0.380 - 3.040 |
| CMT-12-125 | 0.750 x 0.125 | 6.0 - 50.0 | 0.480 - 3.840 |
| CMT-14-058 | 0.875 x 0.058 | 6.0 - 50.0 | 0.271 - 2.168 |
| CMT-14-065 | 0.875 x 0.065 | 6.0 - 50.0 | 0.304 - 2.432 |
| CMT-14-083 | 0.875 x 0.083 | 6.0 - 50.0 | 0.388 - 3.104 |
| CMT-16-058 | 1.000 x 0.058 | 6.0 - 50.0 | 0.310 - 2.480 |
| CMT-16-065 | 1.000 x 0.065 | 6.0 - 50.0 | 0.347 - 3.123 |
| CMT-16-083 | 1.000 x 0.083 | 6.0 - 50.0 | 0.443 - 3.544 |
| CMT-16-095 | 1.000 x 0.095 | 6.0 - 50.0 | 0.507 - 4.056 |
| CMT-18-058 | 1.125 x 0.058 | 6.0 - 50.0 | 0.348 - 2.784 |
| CMT-18-083 | 1.125 x 0.083 | 6.0 - 50.0 | 0.498 - 3.984 |
| CMT-18-095 | 1.125 x 0.095 | 6.0 - 50.0 | 0.571 - 4.568 |
| CMT-20-058 | 1.250 x 0.058 | 6.0 - 50.0 | 0.388 - 3.104 |
| CMT-20-065 | 1.250 x 0.065 | 6.0 - 50.0 | 0.434 - 3.472 |
| CMT-20-095 | 1.250 x 0.095 | 6.0 - 50.0 | 0.634 - 5.072 |
| CMT-22-120 | 1.375 x 0.120 | 6.0 - 50.0 | 0.881 - 7.048 |
Quality Control
Every Unit Inspected Before Shipment
Raw Material Inspection
Material certifications verified. Composition confirmed by spectrometer before machining begins.
Thread Gauge Inspection
100% go/no-go gauge check on all threaded sections. Zero tolerance on dimensional non-conformance.
Load Capacity Test
Static and dynamic load tests run on representative samples from each production batch.
Dimensional Measurement
CMM verification of critical dimensions — ball diameter, bore, thread pitch, and body length.
Surface Inspection
Visual and tactile inspection for burrs, scratches, surface cracks, and plating defects.
Articulation Test
Misalignment angle and torque measured to confirm liner performance meets specification.
Heat Treatment Verify
Hardness tests confirm proper heat treatment on chromoly steel bodies and bearing balls.
Batch Documentation
Full traceability from raw material heat number to finished part. COC and inspection reports available.
Applications
Where CHROMOLY TUBING Are Used
Related Products
All Products →More from the CHROMOLY TUBING Series
Get a Quote
Request a Quote for the CHROMOLY TUBING Series
Share your part number, required quantity, and any special material or packaging requirements. We respond within 24 hours.
Email
⚡ Reply in 24 hrs
🎁 Free samples
🔒 NDA available
📦 MOQ from 50 pcs
Request a Quote
Please submit the form or email [email protected]
FAQ
CHROMOLY TUBING Frequently Asked Questions
What is chromoly tubing commonly used for?
Chromoly tubing is commonly used for chassis fabrication, suspension links, steering assemblies, roll cages, and other high-strength tubular structures.
What material is used in this tubing series?
This series uses 4130 chromoly steel. Other materials such as 4140 and 4340 may also be available for project-based requirements.
Are these tubes cut to length?
Yes. The series is supplied in cut-to-length ranges shown in the size chart, helping simplify fabrication planning and stock control.
How do I choose the correct chromoly tubing size?
Choose based on tubing outside diameter, wall thickness, required cut length range, and target weight range for the application.
Can custom sizes or special lengths be supplied?
Yes. Special sizes are available. Contact us with your required outside diameter, wall thickness, and target cut length for review.
Why is 4130 chromoly used for fabrication tubing?
4130 chromoly offers a strong balance of weldability, strength, and structural reliability, making it a common choice for performance and industrial tube fabrication.