B - Operations – Transporting – 23 – P
Patent
B - Operations, Transporting
23
P
B23P 15/00 (2006.01) B21D 51/08 (2006.01) B21D 53/10 (2006.01) F16K 5/06 (2006.01) F16K 27/06 (2006.01)
Patent
CA 2254087
A method for manufacturing a ball-type valve includes steps of preparing a tubular member between two molds, pressing the tubular member between and by the two molds to form a substantially spherical member with two apertures defined diametrically through a peripheral wall of the spherical member, and inserting a tube through the two apertures and respectively welding two ends of the tube to two peripheries defining the apertures.
Ade & Company
Huang Hung-Chang
LandOfFree
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