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Steel tube quality control is one important function where we comply to our customers requirements and requested standards by running all modern inspections and testing equipments with zero tolerance of error.

Quality Control Procedures

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High Frequency Welding
Additional information : No additional element in welding area No change of chemical composition Stable welding properties
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Mechanical test
This procedure means to make sure pipe mechanical properties are within tolerance
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Thickness Check
This quality control procedure means to make sure tube thickness is within tolerance
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Hydrostatic Test
The purpose of this quality control procedure is to make sure there is no leakage within standard pressure
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Expand Test
This procedure means to make sure welding is strong enough to endure process in customer
steel-tube-quality-control-istw-OD check
OD Check
This quality control procedure means to make sure tube OD or dimension is within tolerance
steel-tube-quality-control-istw-Length Check
Length Check
This quality control procedure means to make sure specified length is within tolerance
steel-tube-quality-control-istw-Flattening Check
Flattening test
This quality control procedure means to make sure no crack on welding area when processed in customer