उत्पत्ति के प्लेस
Jiangsu, China
Material
Carbon steel / Alloy steel
Internal Spring Diameter
2", 2 5/8", 3 3/4", 5 1/4", 6"
Wire Diameter
5.0mm - 11.5mm
Winding type
Left winding / Right winding
Finished
Galvanized / Nongalvanized / Oiled
Standard Length
2500 / 2750 / 3000 / 3250 /3500mm
Assembled
Pre- Assembled or Not
Function
For sectional door use