Qingdao Tennry Carbon Co.,Ltd.

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Quality Control

  • Carbon Test
    1
    Carbon Test

    1.Flexural Strength : Tested by Digital Flexural Strength Testing Machine

    -GB/T 3074.1-2008

    2.Compressive Strength : Tested under GB/T13465-I ,then calculated by formulary

    -GB/T 1431-2009

    3.Resistivity : Measured by HOKI or DC Powder Supply and Multimeter like FLUKE45.

    -GB/T 24525-2009

    4.Porosity : Testing the quality and volume or soak media method

    5.Carbon : Tested and Calculated by experiment.

    6.Ash and Volatile : Heating up to 850 ℃ by Muffle furnace, the weight of the sample loss and remain.-YB/T 5416-2000

  • Packaging Control
    2
    Packaging Control

    Provide specific packaging solutions tailored to product characteristics, ensuring normal use for customers after delivery.

    Packaging Details:


    Inner Packaging: Double protection with vacuum sealing and buffer bubble wrap

    Outer Packaging: Dual-layer security via 5-ply corrugated cases and wooden crates, both sturdy and durable

    This system guarantees absolute product safety during transportation while offering customers a cost-effective shipping solution.

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