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作者:Datong Hydraulic

Technological process of cold drawing steel tube

Technological process of cold drawing steel tube
作者:Datong Hydraulic

Cold drawing (rolling) steel tube: round pipe blank → heating → piercing → heading → annealing → pickling → oiling (copper plating) → multi-pass cold drawing (cold rolling) → blank pipe → heat treatment → straightening → hydrostatic test (flaw detection) → marking → warehousing.

What is a cold drawing steel tube? Hot-rolled steel pipe is made of continuous casting slab or initial rolling slab as raw material, which is heated by walking-beam heating furnace, descaled by high-pressure water, and then entered into roughing mill. The roughed material is cut into head and tail, then entered into finishing mill, and then rolled by computer control. After final rolling, it is cooled by laminar flow and coiled by coiler to become straight hair coil. The head and tail of straight hair curls are often tongue-shaped and fishtail-shaped, and the accuracy of thickness and width is poor. The edges often have defects such as wave shape, folded edge and tower shape.

Our hot products:

Skived Roller Burnished Tube;

Chrome Plated Tube;

Ready to hone tube;

Large size honed bore tube;

Seamless cold drawn tube

上一篇What is the best material for hydraulic cylinder tube and rod下一篇 DIN2391 ST52 EN10305 E355 hydraulic honed tube

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DATONG HOIDINGS CO.,LIMITED 
Shanghai Foreign Trade Enterprises Pudong Co., Ltd. Add: No.258-268, Zhaojiabang Road,Shanghai,China
+86 13916761557
+86 13296046260
andy@datong-hydraulic.comwww.cylinder-rod.com

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