Product Features: Application of high precision cold-drawn seamless tubing plays an important role in saving steel, improving processing efficiency and saving energy. The products are widely used in automobile, petrochemical, marine engineering equipment, pneumatic components, engineering machinery, offshore engineering, machinery manufacturing and other industries. Hengli adopts advanced seamless cold-drawn production equipment and is equipped with automatic control system and online quality inspection system to ensure stable and reliable product quality and quality management system certification: ISO9001，ISO14001，ISO18001.
Cold drawn size range: Manufacture standard: GB/T3639，EN10305-1，ASTM A519 Straightness: 0.5/1000 Inner diameter tolerance: 40-250 mm (inner diameter larger than 250 mm can be accepted under non standard customization. Check specific parameters on the sample)
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