Grade 5 CNC
OEM CNC MACHINING Gr5 Titanium Disc Brake M8x23 Screws
Ultra-rigid lightweight disc brake screws machined with rolled threads, engineered for high thermal loads and zero galling.
Precision Component Lineup
High-Performance Titanium Hardware Engineered for Export
Direct supply from Baoji "China Titanium Valley" directly to South Korean distributors, precision builders, and Tier-1 cycling performance brands.
Laser Engraved
Custom Grade 5 Titanium Plate Tag 1.5mm/2mm Sandblasted
Sandblasted blank identification plates and boutique cycling tags tailored for custom Korean workshop serial branding.
Ultra-Light 12-Pt
12 Point Nuts Titanium 6AL-4V Grade Exhaust Screws M8x1.25
Extreme corrosion-resistant high-tensile 12-point flange fasteners for motorsport, performance exhaust, and chassis stress joints.
Cockpit Grade
TC4 Titanium Ti Torx M5x16/18/20mm Tapered Stem Bolts
Integrated washer design tapered head bolts engineered to pair seamlessly with titanium headset spacers and stem assemblies.
PVD Hard-Coated
Gr5 Titanium Banjo Bolts Hexagonal Head Super-Hard PVD M10
Hydraulic brake banjo bolts precision turned on 5-axis CNC machines with high chemical inertness against DOT and mineral oils.
Micro DIN912
Customized Titanium Screws Mini Screws M2 M2.5 DIN912 Torx
High-precision micro titanium machine screws for cycling electronics, onboard GPS computers, sensor brackets, and micro mechanics.
Precision Cylindrical
Titanium Screws M2 M2.5 Customized Cylinder Head Bolt
Precision-ground cylindrical heads with exact concentricity, ideal for aerospace tolerances and lightweight luxury goods.
CNC Begleri EDC
TC4 Custom Made CNC Machined Titanium Alloy Begleri Bead
Specialty turned ergonomic TC4 EDC accessories featuring mirror polishing, flame anodizing, and tactile textured knurling.
Technical Whitepaper & Metallurgical Analysis
Engineering Superiority: Ti-6Al-4V Grade 5 in Bicycle Headset Spacer Architectures
In high-end performance cycling, headset spacers do not simply act as height adjusters; they represent a critical axial load distribution junction within the steerer assembly. While standard carbon fiber spacers suffer from delamination under continuous micro-vibrations, and 6061 aluminum spacers tend to seize or gall in saline or humid environments, Grade 5 Titanium (Ti-6Al-4V / TC4) introduces an ideal modulus of elasticity combined with zero oxidation risk.
At Velnora Titanium Industry Co., Ltd., based in Baoji—China's world-recognized "Titanium Valley"—we manufacture headset spacers utilizing aerospace-grade seamless Ti tubes and forged bar stock. Through computer-controlled 5-axis turning and precision wire EDM slicing, our headset spacers achieve face-parallelism tolerances within ±0.005mm. This eliminates uneven bearing preload, protecting expensive ceramic integrated headset bearings from localized stress failure.
Comprehensive Material Performance Comparison Matrix
| Physical Parameter | Gr5 Titanium (Ti-6Al-4V) | Gr2 Pure Titanium | 6061-T6 Aluminum | 316L Stainless Steel | Toray T700 Carbon Fiber |
|---|---|---|---|---|---|
| Density (g/cm³) | 4.43 | 4.51 | 2.70 | 8.00 | 1.55 |
| Tensile Strength (MPa) | ≥ 895 | ≥ 345 | 310 | 580 | 600 (Axial Laminate) |
| Yield Strength (MPa) | 828 | 275 | 276 | 290 | N/A (Brittle Failure) |
| Vickers Hardness (HV) | 330 - 360 | 145 - 180 | 95 - 105 | 150 - 190 | Variable |
| Thermal Expansion (10⁻⁶/K) | 8.6 | 8.6 | 23.2 | 16.0 | -0.5 to 2.0 |
| Salt Fog Corrosion Resistance | Immune (>2000 hrs) | Immune (>2000 hrs) | Moderate Pitting | Resistant | Chemical Degradation Risk |
| Galling Resistance at Thread | High with Micro-Oxide | Moderate | Prone to Stripping | Moderate Galling | Delamination Risk |
Localized Application Scenarios in the South Korean Market
The bicycle market in South Korea has undergone a distinct structural transformation over the past five years. Driven by the expansion of premier national cycling arteries such as the Four Rivers Bike Path (4대강 자전거길), the Han River Circuit (한강 자전거도로), and rugged coastal courses across Gangwon-do and Jeju Island, Korean cyclists demand uncompromising hardware. The extreme humidity and monsoonal summer climate, contrasted with icy winters treated with heavy calcium chloride road salts, create a notoriously harsh corrosive operating environment. Standard alloy spacers and bolts degrade quickly, leading to aesthetic discoloration, thread binding, and steerer creaking.
Furthermore, South Korea's burgeoning high-end custom bicycle workshops in Seoul (districts like Seongsu-dong, Mapo-gu, and Gangnam) and Busan have shifted focus toward bespoke titanium and high-modulus carbon builds. Korean riders hold some of the highest aesthetic and craftsmanship standards globally, prioritizing weight savings without compromising boutique finish details. Our vacuum PVD coatings (oil slick / rainbow, mirror gold, stealth DLC black) and high-voltage anodizing treatments (deep royal purple, electric cyan, burnt rose gold) perfectly serve South Korean custom builders who require custom laser-etched hangul logos, tight ID/OD tolerances for fully integrated internal cable routing (D-shape steerers), and unmatched visual appeal.
Four Rivers Long-Distance Touring
Long-distance endurance cyclists crossing the 633km Seoul-to-Busan route demand titanium headset spacers that resist sustained torque vibration and all-weather road grime without creaking or degrading bearing integrity.
Seoul Boutique Atelier Custom Builds
Supplying specialized builders across Seongsu-dong and Hongdae with ultra-low batch sizes (MOQ 50 pcs), custom laser engravings, and millimeter-accurate spacer depths (2mm, 3mm, 5mm, 10mm, 15mm, 20mm).
Integrated E-Bike & High-End Commuter Fleets
Meeting the tight-tolerance structural requirements for high-torque electric gravel bikes and urban speed-pedelecs navigating steep Korean topographic inclines and salted winter roadways.
Market Intelligence
Emerging Trends in the Korean Titanium Bicycle Components Sector
Critical trends reshaping how South Korean bike brands and aftermarket distributors source specialized metal hardware from China.
Integrated Cockpit Internal Routing
Modern high-tier aero frames in South Korea utilize D-shaped fork steerers with internal cables routed directly through headset spacers. We engineer split-interlocking CNC titanium spacers that permit cable alterations without bleeding hydraulic disc lines.
Demand for PVD & Timascus Aesthetics
Korean enthusiasts consistently lead regional trends in cockpit personalization. Beyond traditional raw satin finishes, export demand for iridescent PVD chameleon coatings and patterned Timascus (Mokuti) top caps has increased by over 42% year-over-year.
KC Safety Alignment & Material Traceability
With stricter oversight under South Korean product compliance guidelines, Korean importers prioritize manufacturers capable of providing mill test certificates (MTCs), optical spectrum chemical analysis reports, and consistent ISO-compliant dimensional QA.
Why Choose Velnora Titanium
Our Manufacturing Infrastructure in China's Titanium Valley
Headquartered in Baoji, Shaanxi, Velnora Titanium Industry Co., Ltd. has delivered precision titanium solutions since 2013 across Europe, North America, Japan, and South Korea.
13+
Years Industry Heritage
1,000+
Global B2B Clients
±0.005mm
CNC Machining Tolerance
≤ 4 hrs
Response Latency (95.7%)
Raw Material Provenance
Located adjacent to state titanium smelting conglomerates, we source pure sponge-melted aerospace titanium billets, completely rejecting remelted scrap alloys.
Production Transparency
We distribute live machining video feeds, CMM coordinate inspection recordings, and micro-spectroscopy material testing certificates prior to final batch packaging.
Door-to-Door Korean Logistics
Efficient logistics pathways via Incheon Airport air-cargo or Qingdao-to-Busan maritime fast-lanes with full custom clearance documentation assistance.
Procurement Intelligence
Frequently Asked Questions for Korean Importers & B2B Buyers
Key technical, commercial, and regulatory guidance addressing procurement practices in South Korea.
What steerer tube dimensions do your titanium headset spacers support?
We manufacture standard 1-1/8 inch (28.6mm) spacers, oversized 1-1/4 inch (31.8mm) Canyon/Giant OD2 formats, 1.5 inch lower tapered transitions, and specialized internal routing split-spacers conforming to custom OEM CAD geometries supplied by Korean bike brands.
Can you provide custom laser branding in Korean Hangul or specific brand fonts?
Yes. Using fiber optic laser etching systems, we produce ultra-sharp vector engraving for brand logos, Hangul typography, product batch numbers, or geometric patterns directly onto anodized or raw titanium surfaces with zero deburring defects.
How do you guarantee surface parallelism to prevent headset bearing binding?
Unlike stamped aluminum rings or sawn carbon tubes, every single Velnora titanium spacer undergoes high-precision dual-face CNC surface turning and micro-grinding. Our face parallelism is checked via Mitutoyo micrometers to remain strictly within ±0.005mm.
What is the standard lead time and sample policy for Korean distributors?
Standard off-the-shelf samples dispatch within 48 hours. Custom CNC prototype runs typically require 7 to 10 working days, and mass production volumes (1,000–5,000 pcs) deliver within 15–20 days via fast air express directly to Incheon.
What are the tariff and import documentation considerations under the China-Korea FTA?
Under the China-Korea Free Trade Agreement (CKFTA), titanium bicycle parts classified under HS Code 8714.99 and titanium fasteners under HS Code 7318/8108 can qualify for preferential tariff reductions. We provide the official Certificate of Origin (Form FTA) with every export batch.
What payment mechanisms and trade terms do you accommodate?
We offer flexible terms including FOB Qingdao/Shanghai, CIF Incheon/Busan, and DDP to your domestic warehouse in Korea. Settlement can be made via T/T, Letter of Credit (L/C), or secure multi-currency B2B platforms.