1. Summary: Seamless tube (Seamless tube) is a kind of has hollow section, and the peripheral no juncture of strip steel. 2. The seamless tube manufacturing process: hot, cold drawing and heat expansion 3. The seamless tube specification: 6-1240 x 1-200 mm 4. The seamless tube process: Tube rounds-test-skinning-test-heating- -the grinding perforation pickling-lubrication airing-cold drawn welded head-- solid solution processing-pickling-pickling passivation-test-cold rolling-to cut oil--head- -the air drying in polishing polishing-test-logo-finished product packaging According to user requirements of steel specification, size production, and meet the technology needs, quality first, price negotiable or electricity discussion, quantity is with preferential treatment. Sales hotline: 86+022-58818701 13752327399 15522666517 fax: 022-26872212 Tianjin ZXHD steel trade Co.,LTD.China.
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