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DIN 30670 specifies requirements for factory-applied three-layer extruded polyethylene-based coatings, and polyethylene-based coatings for the corrosion protection of steel pipes and fittings.
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DIN 2391-- cold Drawn or cold rolled steel tube is used in hydraulic & pneumatic cylinder, mechanical and Automotive engineer
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Email : lynn@cnzzysteel.com
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Address: Floor 1, Building 2, No. 1876 Chenqiao Road, Fengxian District, Shanghai
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