Jiaozuo Hainaxin Hydraulic Equipment Manufacturing Co., Ltd.
East Side of the South Guangxing Road, Industrial Park, Bo'ai County, Jiaozuo City, Henan Province, China
Contactor: Miss Zhai
The high-precision cold drawn pipe is made of hot rolling seamless tube and longitudinal welded pipe blank, which are processed on special cold drawing machine with die by particular deformation mechanism design after chemical treatment. Cold drawn pipe is usually maked of seamless tube, HNX is a leading steel pipe supplier.
The Product performs Chinese national standard GB/T 3639-2009: Cold-rolled or Cold drawn seamless tube, Which is modified in relation EN 10305-1:2002(Steel tubes for precision applications-Technical delivery conditions Part 1: Seamless cold drawn tubes).
The product possesses strictly diameter accuracy, whose external diameter is measured with outside micrometer, inner diameter with inner scale. Inside and outside surface finish and straightness are both fine. Straightness range is 0.3 ~ 0.5 mm/m, inner-hole roughness range is 0.8 ~ 1.6 μm, wall thickness difference is ± 5%.
Technical parameters（GB/T 3639-2009（MOD EN 10305-1:2002））
Our company’s high-precision cold drawn pipe can be customized in steel grades and sizes. Existing products‘ external diameter range is Φ60mm~Φ299mm,length less than 13m, and materials cover 20#、45#、16Mn、25Mn and high strength low alloy cold drawn tubes and honing tubes.
The standard grade table of seamless steel
High-precision cold drawn steel pipe is a new type of high-tech energy-saving products. Advantages include:
1)High-precision cold drawn steel pipe adopts cold-drawing technology , can be used as hydraulic and pneumatic cylinder tubes, hydraulic pipelines, oil pump pipes and so on, especially non-standard special long stroke cylinders.
2)The metal structure of cold drawn steel pipe presents fibrous, which effectively improves the performance of metal. Usually , the strength limit of the finished tube layer increases 60%, which is very helpful for building compactness and lightweight equipment.
3)All hot rolled tubes have been detected by nondestructive inspection, and there are no defects in stock, which really ensures product performance. Such standard rate and metal utilization are both above 95%.
4)High-precision cold drawn pipe is efficiently processed without inner-hole machining. Such, a 250 mm diameter, 10 m long cylinder only takes 4 min, Which is conducive to timely supply high-precision products.
As a well-known steel pipe supplier, the company provides diversified delivery conditions of products, such as Cold drawn and stress relieved (+ SR), annealed (+ A), normalized (+ N).When order product, customers need providing product name, steel grade, dimensions, quantity (weight/length), delivery condition, processing way, and special requirements, etc.
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