65Mn Roller Shutter Door Spring Steel Strip Manufacturer
A roller shutter door spring is a heavy-duty steel coil, usually a torsion spring, that counterbalances the door’s weight, making it easy to open and close by storing and releasing rotational energy, ensuring smooth operation, and preventing the motor from struggling with the door’s significant weight.
Roller Shutter Door Spring parameters
| Material grade | 50# / 65Mn / 1050 / 1060 |
| Surface color | Grey blue, polished blue |
| Hardness | Hardened&tempered 44-46HRC |
| Edge | Round edge, cutting edge |
| Packing Details | 3m,4m,12kg/roll, or as customer’s requirement |
Common Size of Roller Shutter Door Spring
| 60 x 1.60 | 50 x 1.50 | 65 x 1.20 | 60 x 1.0 |
| 80 x 1.40 | 45 x 1.50 | 60 x 1.20 | 55 x 1.0 |
| 65 x 1.40 | 60 x 1.30 | 60×1.1 | 55 x 1.20 |
| 50 x 1.0 | 60 x 1.40 | 55 x 1.30 | 50 x 1.20 |
65Mn Roller Shutter Door Spring
| 45 x 1.0 | 55 x 1.40 | 50 x 1.30 | 45 x 1.20 |
| 40 x 1.0 | 50 x 1.40 | 45 x 1.30 | 40 x 1.20 |
| 45 x 1.40 | 40 x 1.30 | 35 x 1.20 | 45×1.1 |
| 40 x 1.40 | 1.25×50 | 50×11 | 1.4×70 |
The Roller Shutter door spring is a crucial part for the safety and functionality of the roller shutter door, located within the barrel above the door, and is essential for balancing the door for manual or automated use, preventing it from slamming shut or being too heavy to lift.
Rolling shutter door spring steel strip refers to a specialized type of steel strip that is used primarily in the manufacture of springs for rolling shutter doors (also known as roll-up doors or sectional doors).
These steel strips are made from spring steel, a type of steel known for its high elasticity and strength, which allows it to return to its original shape after being deformed.
Our spring steel strips are made of high-quality steel with excellent elasticity and high strength. Whether it is industrial equipment or daily necessities, spring steel strips can meet your needs for high-performance materials.
Spring steel strip and Roller Shutter Door Spring undergo a series of processing steps during the manufacturing process, including:
- Cold rolling: The steel plate is rolled into a steel strip of required thickness and width through a cold rolling mill.
- Heat treatment: The hardness and toughness of the steel strip are adjusted through heat treatment processes such as quenching and tempering.
- Surface treatment: such as phosphating, galvanizing, etc., to improve corrosion resistance and surface finish.
The main application of High Carbon Spring Steel Strip
| Product standard | Applications | S50C(CK50/1050) | – Measuring tape | |
| 65Si2Mn | – Springs | – Structural parts of cameras | ||
| 50CrV4 | – Springs | – Chain parts | ||
| 51CrV4 | – Springs | – Springs | ||
| SK4 (1095) | – Measuring tape | – Clutch parts | ||
| – Razor blades | – Washers | |||
| – Pen points | – Safety buckles | |||
| – Wind-up springs | S55C(CK55/1050) | – Springs | ||
| – Springs | – Safety shoes | |||
| – Cutlery | – Can openers | |||
| – Knitting needles | – Thompson blades | |||
| SK5 (1085) | – Measuring tape | – Structural parts of cameras | ||
| – Gauges | S60C(CK60/1060) | – Chain parts | ||
| – Springs | – Hand saws for woodworking | |||
| – Cutlery | – Safety shoes | |||
| – Knitting needles | – Springs | |||
| – Band saws for woodworking | – Office equipment parts | |||
| and lumbering | – Washers | |||
| – Round saws | S65C(65MN/CK67) | – Safety shoes | ||
| – Office equipment parts | – Clutch parts | |||
| S45C(CK45/1045) | – Clutch parts | – Springs | ||
| – Chain parts | – Washers | |||
| – Retainers | S75C(CK75/1075) | – Clutch parts | ||
| – Washers | – Springs | |||
| S50C(CK50/1050) | – Measuring tape | – Band saws | ||
| – Structural parts of cameras |
