Structural Pipes

PPI is the pioneer of spiral welded mild steel pipes in Malaysia and has supplied to many landmark projects in Malaysia and this region.  Due to its inherent strength against multi directional lateral forces, structural steel pipes are widely used for:
  • Construction of ports and harbours
  • Support piers for off-shore berth
  • Bridge foundations
  • Retaining walls in land reclamation projects
  • Structural members for buildings and roof structures
  • Columns for billboard towers and vertical structures
Our structural pipes are manufactured in accordance to the below standard:
 
BS EN 10219:2006 Cold formed welded structural hollow sections of non-alloy and fine grain steels
BS 3601:1987 Specification for carbon steel pipes and tubes with specified room temperature properties for pressure purposes
API 5L Specification for Line Pipe (without monogram) *
 
Remarks:
* API 5L with monogram pipes can be supplied by Petro-pipe (Sabah) Sdn Bhd
 
Special Application of Steel Pipe Piles - Retaining Walls
 
Steel Pipe Pile Walls
Steel pipe pile walls consists of a steel pipe and clutches welded on either side of the steel pipe. One SPSP is connected to the next one by interlocking their clutches. The most commonly used clutches are the P-P, P-T and L-T types.
 
 
Combi-walls
Steel pipe piles can also be joined into continuous retaining walls by connecting them with conventional sheet piles as intermediate sections. These combined walls have enhanced resistance to vertical and horizontal loads compared to the conventional sheet pile sections. They can be used as quay walls, breakwaters, temporary cofferdams, retaining walls, bridge foundations, and other various civil engineering structures.
 
Pile Shoes
Steel pipe piles can be reinforced with pile shoes according to the specified bearing capacity and ground conditions.
 
Open-ended piles can be fitted with external or inside reinforcement rings (Figure 1)
 
Figure 1: Steel pipe pile with a tip reinforcement.
 
Bottom plates are used where the piles are mainly end bearing in a boulder-free soil layer (Figure 2).
 
Figure 2: A bottom plate reinforced with steel ribs.
 
Where the piles are to be driven trough rocky moraine or into the bedrock, rock shoes fitted with a structural steel dowel are used to prevent damage to the pile end and to centre the load (Figure 3a). Rock shoes with a hardened steel dowel shall be used especially to prevent the pile dowel from skidding on a sloping rock surface (Figure 3b).
 
Figure 3:
(a) Scheme of a rock shoe made
from Structural steel

(b) Scheme of a rock shoe equipped
with a piece of hard metal