
Main application & performance:
SG-300U chain stitch machine is a double chain stitch sewing head suitable for light or heavy fabric sewing, it can sew apparel or heavy material such as mattress.  it can be adopted as the sewing head on all  models of tape edge machine in the market.Â
SG-300U sewing head offers excellent speed and thick fabric sewing capabilities. It is the first choice for mattress sewing in mattress production.Â
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Max Sewing Speed | 3500spm |
Feed Type | Compound Feed&Alternating Pressers |
Max Stitch Length | 7.6mm |
Clearance Under Presser Foot | 11.00mm |
Needle Bar Stroke | 36.5mm |
Dimensions from Needle to Side of Machine Bed | 6.9mm |


Our Services:
1. After-sale service:
  Installation & Commissioning: The seller can provide the installation, commissioning and training
   service in buyer's factory, while the buyer needs to pay for VISA application, air ticket, accommodation,
  (if necessary) interpreting fee for seller's technician.
2. Warranty:For the machine above,the seller provides one year warranty starting from the moment
the seller dispatches the machines. For the detailed guarantee period of each part, please refer to the operation manual.Wearing parts,consumption material and the damage incurred by the buyer's incorrect operation are out of warranty range.
FAQ:
Voltage: Please pay attention to your country's voltage,
China is 220v 1phase 50Hz / 380v 3phase 60Hz. If different, please inform us in advance.
Our company:Â
Nanjing Square Mattress Machinery Co., Ltd. (also named Nanjing Sifang MattressÂ
Machinery Factory) was established in 1990. We are a specialized manufacturer ofÂ
complete line mattress & sofa spring equipment. Our present products cover 10 seriesÂ
and more than 60 models. Our present factory covers an area of 35,000sqm with aÂ
14,000-square-meter workshop.
Presently, our company is running strictly in terms of ISO90001:2000 quality system. OurÂ
products sell well not only in China but also far in Europe, South America, North America,
 Australia, the Middle East, Asia, Africa, and other countries and regions all over the world. Our products make us win customers' trust and recognition widely. Our annual exportÂ
volume is increasing rapidly. Any of your contacts or visits is sincerely welcomed. We lookÂ
forward to making cooperation with you in the near future!  Â
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Product information:
Inner layer: PTFE
Enhancement layer:stainless steel wire braid ( AISI Steel 304 316 )
Outer layer: PVC, PU(black, red, blue, yellow, purple, clear, gray, orange, ect.)
Temperature range: −65℃ ~ +260℃
Product performance: high temperature resistance,low temperature resistance,long lasting and good durability,acid and alkali resistance,ozone resistance,low coefficient,anti-friction, long using life and non-aging.
Purpose: widely used in Automotive, Bicycle, Motorcycle, Racing, Brake Lines, Clutch Lines, Fuel Systems, Turbo oil feed Hose, Coolant Systems, Oil Pressure Systems, Gauge lines & Power Steering.
Compatibility: Brake Fluids, Unleaded Petrol, Methanol, Water, & Oil. Ideal for use with Unleaded fuel, ect.

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