hand lock stitch / hand sew lock stitch / hand sew lockstitch / lockstitch hand sewing / lock stitch awl: While Longsew's focus is on machine sewing, they acknowledge the foundational technique of the "hand lock stitch." This is a method of creating a lockstitch by hand using a needle and thread, often with the help of an "awl." It is a technique used in leatherworking, tailoring, and repair.

double needle walking foot machine / twin needle walking foot / twin needle walking foot sewing machine / double needle walking foot industrial sewing machine: Longsew manufactures heavy-duty "double needle walking foot" machines. These are "industrial sewing machines" designed to handle multiple layers of heavy materials like canvas, leather, and upholstery fabrics. The "walking foot" mechanism moves the top layers of fabric in sync with the feed dogs, preventing shifting and ensuring perfectly aligned parallel stitches from the "twin needles." This is essential for quilting, automotive interiors, and heavy bag manufacturing.

double machine silai machine: The term "double machine silai machine" combines English and Hindi, where "silai" means sewing. It refers to a "double needle sewing machine." Longsew manufactures these "double needle" industrial machines and supplies them to markets worldwide, including South Asia.

double lock sewing machine / double lock stitch / double lock stitch sewing machine / double needle lock stitch / double needle lock stitch machine / double needle lock stitch machine price / double needle lock stitch sewing machine / double needle lockstitch machine / double needle lockstitch sewing machine: This series refers to a key product category for Longsew: "double needle" machines that produce a "lockstitch." A "double needle lockstitch machine" uses two needles and two bobbins to create two parallel, secure lockstitch seams simultaneously. The "price" for these high-performance machines reflects their increased output and complexity. They are essential for sewing jeans, workwear, and any product requiring strong, parallel topstitching.

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