Hold down bolts for wind towers
[ Time：2019-06-18 Click：1025 ]
High duty, High strength wind tur←±∑≤bine, wind energy tower founα←∑dation anchor bolt cage system i≈≤♥n wind energy project. Compone★↑↓γnts including anchor bolt(main part&¥),flange, H.D. bolts, cap, lα λeader bolt, concrete.
ADVANTAGE: & nbsp; &nbΩ×σsp; &nbsφ≤±πp; ™Ω×; &nb☆♥sp; &nbs ©"p; &nσ&<bsp; ε &nbs>•p; >$≈★; &n ™bsp;
Excellent anti-delay ← fracture performance and l×€δ₩ong fatigue life(no da☆σ≠mage after 12 million times test);&★↔≈nbsp; &nbs™¥>p; ☆$ &±€✔☆nbsp; '★ ♥ ≠®≈& $∏ &nbs↕¶ p; ∏≥< &nbsα'>p; ↕₩&↑ &nbs™¥↑p;
Provide double thread bolts with max☆¶£imum length of 12000mm; ↕≈ ∑ &≥×↑♣nbsp; &₽ ×β $π∑π;
Standard: GB/T3098.1 ☆←ΩISO898-1 or costomer’s request&nφ₹bsp; &nbs ✔≥÷p; →®™↑ "↕α↑ &nb₹↕↔δsp; &♦≥nbsp; &n© bsp;
Mechanical Properties
| Grade | Dia | Tensile Strength Rm/MPa |
2% Elongation Limit RP 0.2/MPa |
Stress Under Proof Load SPf/MPa |
Elongation after fracture A/% |
Reduction oF Area after Fracture Z/% | Rockwell Hardness /HRC |
Bolt Length mm |
-40 ℃ Impact Absorb Energy K/J |
|
| min | max | max | ||||||||
| 8.8 | M16 ~M56 |
830 | 660 | 600 | 12 | 52 | 23 | 34 | 12000 | 27 |
| 9.8 | 900 | 720 | 650 | 10 | 48 | 28 | 37 | |||
| 10.9 | 1040 | 940 | 830 | 9 | 48 | 32 | 39 | |||
| 12.9 | 1220 | 1100 | 970 | 8 | 44 | 39 | 44 | |||
Common specifications
| DIA | Grade | Length | |
| Φ35mm(M36) | 8.8 | 10.9 | As Clients' Demands |
| Φ40mm(M42) | 8.8 | 10.9 | |
| Φ45mm(M48) | 8.8 | 10.9 | |
| Φ53mm(M56) | 8.8 | 10.9 | |
Note: Grades, sizes are allo ♥≤∑wed to change
Manufacture Process
As per different raw materials < and demands, process details wil♥εl be adjusted.
Sample 1.
Raw Material Test --- Normal↕♣izing --- Sand blasting --- Drawing &<₩σ& Straightening --- He ×at Treatment
--- UT Test --- Saw cu÷™tting --- Chamfer --- Po₩lishing --- Screw thread --- Tensile teπ st --- Marking ---
QC Test --- Anti-corrosion Test --- ≥♥®Stock
Sample 2.
Raw Material Test --↑ ×φ- Heat Treatment --- Pea'λling --- Polishing --- UT Test --- ✔πSaw Cutting --- Chamfer
--- Polishing --- Screw Thread ×σγ×--- Tensile Test --- Marking --π↑- QC Test --- Anti-corrosion Te嶙st --- Stock
Process details informatiλ≠on, please find at o±•α±ur BLOG within this website. γ≤Thank you!
