fabricant de panneaux

DTH drilling refers to a method where the drilling bit is located at the end of a drill string, below the surface of the ground. This technique is distinguished by the use of high-performance percussion hammers, which are positioned on the drill bit. DTH drilling involves the use of compressed air to deliver rapid impacts, breaking rock into smaller fragments. This method is particularly effective in hard rock formations, making it a preferred choice for mining operations and various drilling applications.


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  • 1.Downhole drilling machine: When drilling a downhole gun hole with a aperture less than 150 mm, in addition to the application of a rock drill, it can also be used to drill a small diameter of 80 ~ 150 mm. When drilling a gun hole with a diameter of less than 70 mm in coal or softer mineral rock, it is generally used to drill or air drill, driven by a motor (or air motor) to drill the drill pipe, and the rock (coal) chips drilled out are discharged through the spiral groove on the drill pipe.
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  • The efficiency of an automatic bag closer sewing machine is unmatched by manual sewing methods. With a high-speed sewing mechanism, it can stitch bags at a much faster rate, saving time and labor costs for businesses. Moreover, the machine produces consistent and uniform stitches, ensuring the quality and reliability of the bag closures.
  • At its core, a serger machine is designed to finish the edges of fabric. It combines several functions—trimming, sewing, and overlocking—into one operation. Unlike a traditional sewing machine, which typically uses a single needle and one or two threads, a serger can use multiple threads (usually 3 or 4) to create a secure seam. This capability allows it to produce stitches that not only hold layers of fabric together but also prevent fraying and unraveling.


  • In addition to its versatility, an industrial overlock machine is also known for its speed and efficiency
  • 2. Enhanced Durability The reinforced seams created by a double stitch machine provide extra strength, reducing the likelihood of seams unraveling over time. This quality is vital for garments that undergo intensive use, ensuring customer satisfaction and reducing return rates.


  • - Upholstery Whether you’re recovering furniture or making cushions, heavy duty needles are ideal for sewing through thick upholstery fabrics and batting.


    heavy duty sewing needle

    heavy