SGB4-1/4-3 type up-and-down compound feeding sewing machine (canvas sewing machine) uses: hemp wheel, polishing wheel, truck tarpaulin, canvas, tent, container bag, ton bag, space bag, safety harness, industrial harness, synthetic fiber lifting belt, harness, quilt, saddle and other thick material products
GA733 super-heavy material swing shuttle up and down compound feed sewing machine this machine uses cam take-up, large semi-rotary shuttle (6 times) hook, so that the replacement of the bottom line times reduced. The presser foot lifting height reaches 32mm -LRB-standard)/36mm, this machine is widely used in the fields of military products, large tonnage hoisting belt, high altitude operation safety protection equipment and parachute, etc. . Including sewing saddle leather, kevlar fiber, three plywood, density plate, plastic plate, etc.
