Suspension and cabin-tilt torsion bars plus stabilizer bars — engineered in CATIA, forged, heat-treated and 100% inspected in Changxing, Zhejiang.
A million torsion bar sets a year — OE-grade suspension
Request a QuotationOperated by an ALWID audited manufacturing partner — Changxing, Huzhou, Zhejiang
Torsion bar assembly — bar, adjuster arm, seats and bolts
Alloy steel ordered to our own spec
Induction hardened to HRC 50-55 surface, HRC 20-28 core
Decarburised layer held under 0.1 mm
Pre-set 3 to 8 cycles for a stable rate
Spline ends cut to the national spline standard
Rate scatter held under 4 percent
Modelled in CATIA and Pro/E · analysed in ANSYS
Every bar is drawn, simulated and validated before a single heat of steel is ordered — the rate you quote is the rate the bar ships with.
Heat treatment and finishing sit next to the forging press, so no bar travels half-finished.
Double-end hot upset forging — ends formed in one heat
Quench-and-temper furnaces on site
Overhead shot-peening line for fatigue life
Automated finishing cells
Alloy steel to spec
Ends upset in one heat
Induction, HRC 50-55
Furnaces on site
Shot-peened for life
100% rate, torque and angle checked
100% stiffness measured after pre-setting
Torque and deformation angle logged per bar
Automatic sorting on out-of-band rate
Serrated and milled seats in line
High-precision torsion testers
Stabilizer fatigue platform
Salt-spray chamber
Rockwell & Vickers hardness
Carbon-sulfur analysis and metallography
Torsion testing to the manual — every design validated
Carbon-sulfur analysis on incoming steel
Light trucks · Pickups · Vans & minibuses · Cabin-tilt systems · Trailer axles
The applications and yearly volume — a sample bar works too
We quote the bar, the rate and the tooling together, in one offer
Destination market and any branding or export packing needs
Feasibility answer within 5 working days · NDA available before you share drawings
Cast, machined, coated and packed on one 180,000 m² campus — 9 million discs and drums a year, shipping to 80+ countries.
Next ›Chassis & Suspension · Guangxi, ChinaMulti-leaf springs for medium and heavy trucks, buses and export pickups — cut, cambered, assembled and painted in Guangxi.
Send the vehicle list or a sample bar — our engineers quote the bar, the rate and the tooling together.
Operated by an ALWID audited manufacturing partner — Changxing, Huzhou, Zhejiang