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Inquire ProductFeatured Polymer Stock & Engineered Profiles
Explore our premium factory-direct semi-finished stock, stabilizer pads, and multi-polymer extrusions manufactured directly by SHUNDA.
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Inquire ProductEnterprise Procurement Framework: UHMW Bar & Solid Profiles
In modern industrial manufacturing, procuring high-performance UHMW-PE (Ultra-High Molecular Weight Polyethylene) bars transcends standard plastic supply. Global Tier-1 procurement teams and mechanical engineers require specific molecular mass distributions, thermal stability regimes, and traceability.
Molecular Weight Integrity
UHMW-PE derives its extreme wear properties from long entangled molecular chains ranging from 3.5 to 9.2 million g/mol (ISO 16790). Our controlled ram-extrusion guarantees zero thermal chain degradation, ensuring optimal impact absorption and extreme resistance to notched abrasion.
Stress-Relieved Annealing
Uncontrolled internal residual stress induces warpage during CNC turning and continuous profile milling. SHUNDA applies a slow-cycle multi-stage thermal annealing regime to all stock shapes, providing isotropic stability within tight tolerances (±0.05mm).
Severe Environment Resistance
Engineered with zero moisture absorption (<0.01%), exceptional self-lubricating characteristics, and chemical inertness against concentrated acids, alkalis, and aggressive organic solvents. Completely immune to biological fouling and cryogenic embrittlement down to -200°C.
Macro-Industry Solutions: Tribological Systems
Across bulk material logistics, marine defense, and bottling automated packaging, UHMW bars and profiles are replacing stainless steel, bronze bushings, and engineered ceramics due to dynamic mechanical advantages.
Bulk Materials & Mining
Used extensively as chute impact bars, wear guide strips, and hopper liners. Prevents bulk solid bridging, reduces acoustic discharge by 18 dB, and mitigates wall wear caused by quartz, bauxite, and raw coal impact.
Automated Bottling & Packaging
FDA/EU compliant machined track guides, star wheels, scroll feeds, and chain wear bars. Operates dry without external lubricants, preventing product contamination and chain elongation at speeds up to 1,200 bpm.
Port & Marine Engineering
Harbor dock fender face pads, low-friction quay wall rubbing strips, and locking sluice wear components. Immune to salt-spray erosion, aggressive marine borers, and long-term seawater absorption.
Heavy Lifting & Civil Mobile
High-load stabilizer crane foot support plates and telescopic boom wear sliding blocks. Withstands extreme point loading without brittle fracture or permanent compression deformation.
Technical Roadmap: UHMW-PE Performance Matrix
Comparative mechanical, thermal, and electrical performance of virgin grade UHMW-PE bars versus advanced filled grades.
0.10 - 0.15
DYNAMIC FRICTION COEFF. (DRY)
>140 kJ/m²
CHARPY NOTCHED IMPACT (ISO 11542)
<0.01%
WATER ABSORPTION SATURATION
0.93 - 0.945
DENSITY (g/cm³ ASTM D792)
| Property Parameter | Test Standard | Virgin UHMW-PE (PE-1000) | Ceramic/Glass Filled UHMW | Static Dissipative (ESD) | MoS2 Lubricated Grade |
|---|---|---|---|---|---|
| Average Molecular Weight | ISO 16790 | 4.5 – 9.0 × 10⁶ g/mol | 5.0 × 10⁶ g/mol | 4.0 × 10⁶ g/mol | 5.5 × 10⁶ g/mol |
| Shore D Hardness | ISO 868 | 63 – 67 D | 71 – 74 D | 65 – 68 D | 64 – 67 D |
| Sand-Slurry Relative Wear Ratio | Steel = 100 | 15 – 18 (Best in class) | 10 – 12 (Ultra-hard) | 18 – 22 | 12 – 14 (Self-lubing) |
| Coefficient of Thermal Expansion | ASTM D696 | 1.5 – 2.0 × 10⁻⁴ K⁻¹ | 0.9 – 1.2 × 10⁻⁴ K⁻¹ | 1.4 – 1.8 × 10⁻⁴ K⁻¹ | 1.3 – 1.6 × 10⁻⁴ K⁻¹ |
| Surface Resistivity (Ohms) | IEC 60093 | > 10¹⁴ (Insulative) | > 10¹² | 10⁶ – 10⁹ (Anti-Static) | > 10¹³ |
| Continuous Service Temp Range | DIN 53446 | -200°C to +80°C | -150°C to +90°C | -150°C to +80°C | -180°C to +85°C |
20+ Years Direct Manufacturing Advantage
Located in Xingtai City, Hebei Province, SHUNDA operates integrated polymer extrusion, sintering, and high-precision CNC milling workshops catering to European, North American, and Asia-Pacific industrial channels.
Full In-House Synthesis Control
Unlike third-party distributors, SHUNDA directly manages polymer resin selection, ram extrusion screw profiles, and compression cooling curves. This eliminates void defects, air blisters, and uneven internal crystalline density.
Direct Multi-Axis CNC Machining
Equipped with 3-axis, 4-axis, and long-bed 5-axis CNC routers capable of machining bars up to 6 meters in length. We turn semi-finished profiles into complex chain tracks, curved corner tracks, and customized wear shoes according to your 2D/3D STEP drawings.
Export-Ready Ocean & Air Logistics
Each profile bundle is strapped with protective polymer interleaves, heavy-gauge poly tubing, and fumigated multi-wall wooden crates to eliminate transit bow, surface scuffing, and atmospheric moisture exposure across global routes.
Regulatory Compliance & International Auditing
Procuring industrial components from China requires strict regulatory governance to meet European and North American destination mandates.
FDA & EU Food Contact
Certified pure virgin polyethylene grades conforming to FDA 21 CFR 177.1520 and EU Directive 10/2011 for direct food and beverage machinery processing contact without organic extractable migration.
RoHS & REACH Directive
Fully compliant with EU RoHS 2011/65/EU and REACH (EC 1907/2006). All stock profiles are strictly free of heavy metals, phthalates, PFOA/PFAS fluorinated surfactants, and SVHC chemical hazards.
EN 10204 3.1 Material Test Reports
Every commercial production batch is issued with an EN 10204 Type 3.1 MTR verifying exact specific gravity, shore D hardness, and intrinsic viscosity to authenticate resin molecular weight.
ATEX Flame Retardance & Anti-Static
UL94 V-0 flame-retardant and conductive carbon-black compound options designed specifically for hazardous explosive grain elevators, underground coal mines, and chemical vapor tanks.
Procurement & Technical FAQ (Engineering White Paper)
In-depth responses curated by SHUNDA polymer engineers addressing manufacturing constraints, material selection tradeoffs, and international ordering parameters.
How does UHMW-PE bar compare to PTFE (Teflon) and Nylon (PA6) for wear applications?
UHMW-PE exhibits significantly higher abrasive sand-slurry wear resistance and notched impact toughness than PTFE and Nylon. While PTFE possesses higher continuous temperature resistance (+260°C) and Nylon exhibits superior mechanical rigidity under heavy static loads, UHMW-PE possesses near-zero moisture absorption and is far more cost-effective for dynamic sliding, chute lining, and impact environments where temperature stays below 80°C.
What is the maximum continuous working temperature for UHMW-PE bars?
The standard continuous operating temperature of UHMW-PE is -200°C to +80°C (-328°F to +176°F). For short intermittent peaks with no mechanical load, it can tolerate up to 100°C. For industrial environments exceeding 85°C continuously, we recommend evaluating cross-linked grades or migrating to SHUNDA Cast MC Nylon or PEEK components.
Can UHMW-PE bars be glued or adhesively bonded to steel?
Because UHMW-PE has an extremely low surface energy (non-polar inert olefin backbone), traditional epoxies, cyanoacrylates, and polyurethanes will not bond to it directly. Effective bonding requires specialized chemical corona/plasma etching or sodium naphthalene surface treatment. Alternatively, our factory supplies bars with pre-drilled counter-bored bolt holes or vulcanized rubber backing for mechanical fastening.
What dimensional tolerances can SHUNDA maintain on CNC turned and milled bars?
For standard extruded stock rods and rectangular bars, we hold ISO 2768-m dimensional tolerances. On our temperature-controlled 4-axis and 5-axis CNC machining centers, we routinely achieve precision tolerances within ±0.05 mm (±0.002 in) on critical bearing steps, bolt hole centers, and interlocking guide tracks.
What is the standard production lead time and export packaging protocol?
Standard semi-finished bar sizes (diameter 20mm to 200mm, profile lengths up to 3m and 6m) ship within 5–10 business days. Custom CNC profile orders typically require 10–18 days depending on tooling. Shipments are packaged in multi-layer moisture-resistant PE wrapping inside ISPM-15 compliant export plywood cases.
Can you provide custom UV-stabilized or colored UHMW-PE bars?
Yes. In addition to standard Natural (milky white), Black, and Signal Green, we formulate custom RAL color masterbatches including Safety Yellow, Royal Blue, and Red. For prolonged outdoor exposure (marine fenders, construction crane outrigger pads), we incorporate carbon black or hindered amine light stabilizers (HALS) to prevent UV embrittlement.
Consult SHUNDA Senior Polymer Engineers Today
Send your CAD drawing (.STEP, .DWG, .PDF) or custom polymer profile specification. Receive comprehensive DFM engineering feedback, compound material recommendations, and factory-direct volume quotes within 12 business hours.
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