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Steel Pipe Piles
MATERIAL AND CONSTRUCTION
Type Content Body
Components Material SS.& SM(41/50 class) Materials including SPHT, API or of equivalent property
Mechanical property (Standard:SS41) Compression strength:41㎏㎟, Tensile strength:41㎏㎟,One side allowable stress 1.6ton/㎠
Strength comparison test after welding (SS41 class)
Type Tensile strength Yield Elongation
Base Metal 47.1 38.8 32.2
welded portion 48.8 - -
Stress corrosion, fatigue and impact Strength of the welded portion Using direct heat treatment on the welded portion, residual stress is removed in order to prevent stress corrosion and fatigue as well as to improve the impact strength of the welded portion
Design and construction Application Used for civil engineering or construction projects including harbor, plant, tank, building, bridge, railway, steel tower, large structure
Maximum product length per a pipe

Bevel end:18m or less, Plain end:25m or less

One Side performance Degree of freedom Due to the variety of sizes (appearance, thickness), flexibility in designing as well as strong bending resistance make SPSP ideal material for long piles
Directionality Displays strength in non-directional horizontal force environments such as earthquakes. Strongest against buckling
Rehabilitation Concrete rehabilitation Superior level of hardness and improved support capacity render performance similar to that of large diameter piles.
Partial rehabilitation Steel plate welding rehabilitation and/or connection among piles of different thickness by layer
Corrosion resistance painting and treatment Piles free of corrosion through low priced asphalt painting, zinc powder painting, epoxy painting, and galvanized or electrolytic treatment
Friction Pile Welding many spiral layers on the surface of pile, and improving friction with ground using its cohesion.
Construction Measurement of the depth about impact Available for more than 60m of impact
Penetration ability Superior to H-steel piles or concrete piles due to its ability to discharge earth and sand inside the pipe and to crush rocks in the tongue. Excellent penetration ability in rough, rocky ground
On-site splice and recovery of loss during impact Convenient weld splicing, able to recover the entire wasting in length that occurs during impact and use for piles of insufficient length.
Delivery and piling Convenient for transportation, loading/unloading. Easy to carry by floating on the water and easy to pile.
Recycling Pipes can be drawn and recycled if the production location changes.
TONGUE AND ON-SITE SPLICE
Pile head
Applicatoins and joint connection
Application and Specification Components of Piles On-site splice method
Application : civil engineering, construction, steel tower, scaffold, pile, support, marine structures, and other steel structures

Applied Standards

KS :D3566, F4602
Standards JIS : G3444, A5525
BS : 1755, E.R.W
ASTM : A252, A500
API : 5L, 5LX
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