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Products

EN 10219 C9 Interlocking Pipe Piles

group nameInterlocking Pipe Piles
Min Order2 ton
brand nameCangzhou Spiral Steel Pipe Manufacturers
modelEn10219 Spiral Steel Pipe Pile
payment methodL/C
update timeMon, 25 May 2026 13:48:08 GMT

contact supplier

Paramtents

Length 12-60m
OD 1016 1473 1626mm or Custom
Main Structure Steel pipe pile body + C9 locking buckle
Material A252 Gr.2/3 S235JRH S355JR/J2H S460MH
MOQ 2-5 Tons

Packging & Delivery

Min Order2 ton

Briefing

Piling pipes EN 10219-1 S235Jrh S235J2h made of SSAW/SAWH pipes

Detailed

EN 10219 C9 Interlocking Pipe Piles

EN 10219 C9 Interlocking Pipe Piles are cold-formed welded hollow steel pipe piles for structural use. EN 10219 C9 Interlock Piling Pipe is a specialized structural pile used for deep foundation pits, cofferdams, and other support projects. Its core feature is to achieve mechanical interlocking connection through C9 locking, which has advantages such as anti-seepage, anti displacement, and efficient construction.

It is mainly used in fields such as building structures, such as foundation engineering of buildings and support structures of some large buildings.

Different steel grades have different mechanical properties and chemical compositions to meet the needs of different projects.

Parameter

EN 10219 C9 Interlock Piling Pipes-800-6

Item No:	Piling Pipe 001
Specification:	EN 10219-1 & 2
Grade:	S235Jrh S235JRH S355JR/J2H S460MH,etc
Minimum Yield strength:	235/355/420 Mpa
Tensile strength:	360-510Mpa
Single length:	12M-60M
Wall thickness:	6mm-25.4mm
None-distructive test:	Online X-ray
Hydrotest:	Available
Certificate:	API 5L/ISO 14001/CE/CNAS
FOB port:	Tianjin port
Carbon Equivalent CEV	≤0.44%
Buckle Design	C9 Shape

Connection Method

This C9 interlock type is compatible with Larssen sheet piles, and widely used in combi-wall piling system.

Mechanical Properties of En 10219 C9 Interlocking Pipe Piles

EN 10219	Strength
S235	~250 MPa
S275	~300 MPa
S355	~350 MPa
S420	~415 MPa
S460	~450–460 MPa

Advantage Performance Parameters

C9-Interlock-Piling-Pipe-Advantage-800-1

Verticality Control

The verticality of the first pile after installation is ≤ 0.5%

C9-Interlock-Piling-Pipe-Advantage-800-2

Water Stop Performance

The precise interlocking of the lock can block the water seepage channels in complex geological layers such as gravel layers

C9-Interlock-Piling-Pipe-Advantage-800-3

Flexural Strength

Permanent reinforcement plate in the locking area to enhance local stiffness

C9-Interlock-Piling-Pipe-Advantage-800-4

Anti-corrosion Treatment

Surface zinc layer thickness ≥ 80 μ m, or coated with corrosion-resistant coating

C9-Interlock-Piling-Pipe-Advantage-800-5

Welding Requirements

The locking buckle is welded using double-sided continuous welds, with a weld leg height of ≥ 8mm

Quality Control

MUT Testing

Cangzhou Spiral Steel Pipe Group is equipped with advanced MUT flaw detection equipment, which can inspect spiral steel pipes online without damaging the pipe body. Utilizing the uniform propagation of ultrasonic waves in homogeneous materials, when encountering different media (such as cracks, pores, slag inclusions, and other defects), reflections, refractions, or scatterings occur due to differences in acoustic impedance. The receiving probe captures these echo signals, which are processed to form waveforms or images, enabling the determination of defect location, size, and nature.

MUT flaw detection significantly reduces product quality issues, effectively safeguarding customer interests from loss and ensuring the smooth implementation of pile foundation projects.

MPI Testing

The C9 latch and spiral steel pipe were welded using full welding, and the inspection method employed was MPI (Magnetic Particle Inspection). When discontinuities such as cracks or pores exist in the material, the magnetic flux lines distort at the defect site, causing some lines to escape the surface and form a **leakage magnetic field**. This field attracts and holds magnetic powder, creating visible agglomerations at the defect location, thereby directly revealing the position, size, and shape of the defects. Manual magnetic particle inspection is a crucial step in quality control.

Application

1. Deep water cofferdam for cross sea bridges/high-speed railway bridges

2. Subway foundation pit support (pile spacing is usually 1.2m)

3. River regulation, port and dock expansion, sand enclosure projects, etc

Differentiated Advantage

Why Choose Us

1. The maximum caliber can reach 3620mm and can be customized. It is difficult to find such C9 locking spiral pipe pile factories in the industry.

2. The material can be customized, and all types of European standard EN10219 steel grades can be produced.

3. One stop procurement service, from raw materials to finished C9 locking spiral pipe piles, can be achieved here.

4. CNAS laboratory can ensure that the quality of C9 locking spiral steel pipe piles is 100% qualified and traceable.

5. 365 days a year, 7 * 24-hour technical consultation online, ensuring that customers can find us anytime and anywhere for technical answers and factory inspections.

6. Possess complete international authoritative certifications such as CE, ISO9001, ISO14001, ISO45001, CNAS, etc.