Durable Heavy Duty Commercial Automatic Door Closer Long Service Life Time

051 Small square 051A Smal round 061 Medlum square 061A Medlum round door closer

1. Appropriate weight of door 25-45kg, appropriate width of door 900mm;
2. With stop function, (90 degrees) positioning, and (180 degrees) without positioning;
3. Use high-quality O -shaped seal rings to effectively prevent oil spills;
4. Piston gear is made of high quality carbon steel material and is  treated with heat to ensure the service life of the product;
5. Spring made of high quality spring steel wire ensures the strength of the product to be maintained for a long time'
6. Use of high-quality aluminum alloy die-casting body, three layers of paint protection, to prevent oxidation of the body;
7. Suitable temperature: -30-60 degrees.

1. Appropriate weight of door 40-65kg, appropriate width of door 950mm;
2. With stop function, (90 degrees) positioning, and (180 degrees) without positioning;
3. Use high-quality O -shaped seal rings to effectively prevent oil spills;
4. Piston gear is made of high quality carbon steel material and is treated with heat to ensure the service life of the product;
5. Spring made of high quality spring steel wire ensures the strength of the product to be maintained for a long time'
6. Use of high-quality aluminum alloy die-casting body, three layers of paint protection, to prevent oxidation of the body;
7. Suitable temperature: -30-60 degrees.