we specializing in the production of high precision seamless steel tubes of various cold rolling thin steel tube, the appearance of thick wall seamless tube smooth and bright, uniform wall thickness, high precision according to customer requirements to ensure the error in 0.1mm--0.05mm, in 0.05mm--0.03mm small diameter thin wall tube, cold-rolled precision circular steel tubes, all kinds of material size caliber cold-drawing seamless steel pipe, to ensure the best price in the market. Products are widely used in machinery, petroleum, chemical industry, especially the hydraulic, motorcycle, automotive industry to other of steel precision, smoothness, high mechanical performance requirements of field.. Product material: carbon steel 10#, 20#, 35#, 45#. Stainless steel: 0Cr18Ni9 ( 304 ), 00Cr19Ni10 ( 304L ) 0Cr25Ni20 ( 310S ), 00Cr17Ni14Mo2 ( 316L ), 1Cr18Ni9Ti ( 321 ) cold-drawn or cold-rolled precision seamless steel tubes GB\/T3639-2000, GB\/T8713 -1988 China national standard, German standard DIN2391 bright precision seamless pipe