The concrete pump straight pipe is made of special alloy steel ( 45Mn2).
The inner pipe wall is case hardened by CNC high-frequency induction hardening machine. The inner pipe wall becomes a wearable layer with high hardness.
Wall thickness: 4.0mm, 4.5mm, 5.0mm, 7.5mm etc.
Color: according to customers' requirement
| Specification | I.D.(mm) | O.D. (mm) | W.T.(mm) | Length(mm) | The wall thickness of quenching layer(mm) | Weight(kg) | Working pressure |
| Concrete pump Boom pipe | 125 | 133 | 4 | 3000 | 1.50-1.80 | 48 | 85 bar |
| Concrete pump Boom pipe | 125 | 133 | 4.5 | 3000 | 1.50-1.80 | 45 | 85 bar |
| Concrete pump Deck pipe | 125 | 140 | 7.5 | 3000 | 2.5 | 85 | 85 bar |
The concrete pump straight pipe is made of special alloy steel ( 45Mn2). The inner pipe wall is case hardened by CNC high-frequency induction hardening machine. The inner pipe wall becomes a wearable layer with high hardness. The service life of the inner-hardened concrete pump boom pipe is as 3 to 5 times as normal concrete pump pipe.
Heat treatment process: Case hardening by high-frequency induction quenching
Wall thickness of the pipe: 4.00mm, 4.50mm, 7.50mm
Hardness:
- HRC58-HRC62 for inner quenching layer;
- HRC35-HRC40 for transition layer;
- HRC25-HRC30 for protective layer
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