Forepoling Tube

Forepoling Tube
Grouting guide pipe (also known as steel perforated pipe) is a small-diameter steel pipe used in tunnels and underground engineering for advanced pre-support and ground reinforcement. Grouting is injected into the pipe to improve the physical and mechanical properties of the surrounding rock and enhance stability.
Grouting Pipe
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Product Details

Product Specification: Forepoling Tube

Parameter

Value

Product Name

Forepoling Tube (Spiling Tube / Advance Small Duct)

Place of Origin

Shandong, China

Standard

GB/T 8162, GB/T 8163, ASTM A53, BS 1387

Material Grade

Q235, Q345, ST37, ST44, S235JR, S355JR

Outer Diameter

32mm, 38mm, 42mm, 45mm, 48mm, 50mm, 60mm

Wall Thickness

2.5mm, 3.0mm, 3.5mm, 4.0mm, 4.5mm, 5.0mm

Length

2m, 2.5m, 3m, 3.5m, 4m, 4.5m, 5m, 6m (customizable)

Section Shape

Round

End Treatment

Pointed tip (one end forged or cut to a point)

Grouting Holes

φ8mm - φ12mm holes drilled along the pipe (spacing 100mm-300mm)

Surface Treatment

Galvanized (hot-dip or electro), black, oiled

Connection Type

Threaded coupling or welded extension

Processing Service

Cutting, bending, drilling, tapering, threading

Application

Forepoling (umbrella method) in tunneling, mountain tunnels, shallow buried excavations, soft ground reinforcement

Advantage

High strength, easy grouting, improves soil stability before excavation

Delivery Time

7 ~ 15 days

MOQ

5 Tons

Packing

Bundled with steel strips, seaworthy export packing

Certificate

ISO 9001, BV, SGS (upon request)

Product Showcase

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Production And Processing

Factory Show

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Product Packaging

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