Title: Production method for high precision seamless steel pipe
Application Number: 200610152647 Application Date: 2006.09.26
Publication Number: 1923395 Publication Date: 2007.03.07
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: B21C37/08;B21B19/10;B23P13/00;B23K13/00
Applicant(s) Name: Li Yongli Address:
Inventor(s) Name:
Attorney & Agent:
Abstract:
    The invention relates to a method for producing high-accuracy seamless steel tube. Wherein, its heat rolling process comprises cutting edge, shaping round tube, welding at high-frequency, removing welding bur, checking, heating, rolling, setting diameter, cooling, detecting hurt; and it cold rolling method comprises cutting edge, shaping round tube, welding at high-frequency, checking, heating, hammering, acid washing, bonderizing, saponifying, drawing core mould or rolling, annealing, correcting, cutting head and tail, and detecting hurt. The invention has simple process and low cost, while the product can realize the standard of seamless tube.
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