Embedded channel is an important component material in subway construction projects, which is generally used for the installation of drainage pipes outside the tunnel. The integrated grounding in the railway tunnel and the installation and fixing of pipes and equipment of subway pipe segments in the railway tunnel have a long service life. In order to ensure that the product quality meets national standards, it is generally necessary to find a third-party testing institution for re-inspection.

Testing Range
Embedded chute, external chute, internal chute, pipe gallery chute, tunnel type chute, straight type chute, etc

Test item
Appearance inspection, dimensional inspection, Angle inspection, torsion measurement, thickness of galvanized layer, double anchor column tensile load, deflection test, single anchor column tensile load, trough bearing capacity: Shear working load, T-bolt bearing capacity, standard tightening moment test, single bolt axial sliding load test along channel, T-bolt zinc layer thickness, single fatigue test, fatigue test of precast in concrete test block, static bearing capacity and displacement test of precast in concrete test block, salt spray test (1200h)

Detection standard
TB/T 3329-2013 Embedded trench in the overhead contact system tunnel of electrified railway
GB/T 37613-2019 Embedded channel section steel
GB/T 4956-2003 Non-magnetic covering layer on magnetic matrix Magnetic method for measuring the thickness of covering layer
T/CAMET 02002-2019 Technical specification for embedded troughs and sleeves for urban rail transit
GB/T 10125-2012 Artificial atmosphere corrosion test salt spray test
TB/T 3396.7-2015 High speed railway fasteners system test methods - Part 7: Embedded parts pulling force test

About The Company

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1. Established in 1985, with more than 30 years of testing experience, the first batch of third-party impartial technical inspection institutions approved by the State Administration for Market Regulation.

2. There are offices in various provinces in China, with 12 branch laboratories, which are convenient and convenient, and the testing efficiency is high.

3. Testing capabilities, including 10,000+ parameters and 4,000+ products, covering more than 3,000 items including national standards, industry standards, and international standards.

4. The testing service industry covers metal products, roads, railways, bridges, tunnels, ports, civil construction, petroleum, water conservancy, environmental engineering, etc.

Qualification Image

Qualification Image

Inspection Process

Inspection Process


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  • E-mail:
  • Add.: No.280, Guanlin Road, Luoyang, Henan, China
  • Tel.: +86-4007878588