welders safety garments

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Ultrasonic welding — is an industrial whereby high frequency ultrasonic acoustic vibrations are locally applied to workpieces being held together under pressure to create a solid state weld. It is commonly used for plastics, and especially for joining dissimilar… … Wikipedia
Helmet — For other uses, see Helmet (disambiguation). A woman wearing a cycling helmet A helmet is a form of protective gear worn on the head to protect it from injuries. Ceremonial or symbolic helmets (e.g., English policeman s helmet) without protective … Wikipedia

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