Contact Info
- Tel: +86-311-87813582
- Fax: +86-311-87829648
- Email: Kaiwork@126.com
- Whatsapp: +86 86 138 3318 2035
- Add: No.345, Youyi North Street, Shijiazhuang City, Hebei Province, China.
Superior Corrosion-Protected Infrastructure Grade. Engineered for aggressive environments, coastal structures, and heavy geotechnical foundations, our corrosion-resistant HDPE-coated unbonded post-tensioning (PT) strand combines high-tensile steel integrity with a seamless, UV-resistant high-density polyethylene sheath and specialized anti-corrosion grease, ensuring maximum durability and compliance with international PTI and ASTM standards.
Corrosion Resistant HDPE Coated Unbonded PT Strand | High-Performance Post-Tensioning Steel Tendon
​Designed for critical post-tensioned floor systems, marine environments, and high-capacity ground anchors. Every coil adheres to stringent international mechanical and protective benchmarks.
|
Technical Parameter |
Specification Value |
Governing Standard |
|
Available Diameters |
12.7 mm (0.5 inch) / 15.24 mm (0.6 inch) |
ASTM A416 / BS 5896 |
|
Strand Configuration |
7-Wire (1 Center Wire + 6 Helical Outer Wires) |
ASTM A416 / ISO 6934-4 |
|
Specified Tensile Strength |
1860 MPa (Grade 270 High Tensile) |
ASTM A416 |
|
Coating Type |
Microcrystalline Anti-Corrosion Grease |
PTI / ASTM A960 Specs |
|
Sheathing Material |
Seamless Extruded Virgin HDPE (UV-Stabilized) |
PTI / ISO Standards |
|
Relaxation Class |
Class 2 (Low Relaxation, Max 2.5% at 1000h) |
JIS G3536 |
|
Corrosion Protection |
Dual-Barrier Defense (Grease + Continuous HDPE) |
PTI Spec for Unbonded Tendons |
· ​Dual-Barrier Corrosion Defense: Features a continuous barrier system combining moisture-displacing microcrystalline grease and an impermeable, stress-crack-resistant virgin HDPE outer sheath.
· ​High-Tensile Structural Core: Built upon premium 1860 MPa low-relaxation 7-wire steel strands, delivering robust load-bearing performance and minimum breaking load (MBL) reliability.
· ​UV & Environmental Resistance: The high-density polyethylene (HDPE) sheath is heavily fortified with UV stabilizers, protecting the tendon against solar degradation during outdoor storage and installation.
· ​Full Metallurgical & Protective Traceability: Manufactured under stringent ISO 9001 protocols. Each commercial shipment includes a comprehensive Mill Test Certificate (MTC) verifying mechanical strength and sheath integrity.
​Engineered for heavy-load structures exposed to aggressive environments and corrosive elements:
· ​Coastal & Marine Infrastructure: Port wharfs, piers, offshore platforms, coastal bridge decks, and marine retaining walls.
· ​Aggressive Environments: Wastewater treatment plants, chemical industrial floors, and structures subject to de-icing salts.
· ​Commercial & Geotechnical Engineering: High-rise transfer slabs, multi-story parking structures, and high-capacity permanent ground anchors.
​Q: What makes this HDPE coated PT strand superior in corrosive environments?
A: It utilizes a dual-barrier protection mechanism. The specialized grease prevents moisture contact along the individual wires, while the thick, seamless extruded virgin HDPE sheath completely seals the tendon against chemical and saltwater infiltration.
​Q: Does the base steel strand meet international standards?
A: Yes. The underlying 7-wire strand complies strictly with ASTM A416 Grade 270 or BS 5896, ensuring full mechanical compliance with global structural engineering specifications.
​Q: What is the standard export packaging and protection during transit?
A: Coils are securely strapped, wrapped in protective materials, and palletized to prevent any mechanical abrasion or damage to the HDPE sheath during international shipping. A standard 20ft container loads approximately 20 to 27 metric tons.
