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blue ck75 high carbon C67S 65mn spring steel strip steel

appliations: for the production of roller shutter springs

material: C67S, C75S, C80S (SAE1070,SAE1075, SAE1080)

surface: polished blue/grey

edge: rounded

hardness: 44-48hrc

coil weight: 100-200kg or as your requirement.

*each bundle with anti-rust paper and light oil

*then wrapped in plastic film and put in 20ft container for standard sea worthy

Material grade



Hardened and tempered


1.0x30mm, 1.0x40mm, 1.0x45mm, 1.2x45mm, 1.0x50mm, 1.2x50mm, 1.4x50mm, 1.0x60mm, 1.2x60mm, 1.3x60mm, 1.4x60mm, 1.4x80mm,ect

Surface, Usage

Polished Blue, Roller Shutter Door, Roller Shutter Curtain, Garage Door

blue Hardened and Tempered spring steel
blue ck75 high carbon steel
C67S 65mn spring steel
blue 65mn spring steel

The rolling door accessories for door spring with various size,competitive factory price

  1. spring box, volume gate accessories, rolling door accessories.
  2. iron material. casting handle.
  3. Outside Diameter:205mm/220mm
  4. Inside Diameter:42mm/48mm/60mm/62mm
  5. Spring Width: 38mm,50mm,60mm,65mm,75mm.
  6. Assort Pipeline Diameter: 38mm,42mm,50mm,60mm,75mm.
  7. Suitable Relax Width:3-5m
  8. Material thickness:0.8/1.0/1.2 amd 1.0/1.2/1.5
  9. Ball material: Iron, Nylon, bearing

Hardened & Tempered steel strip / sheet manufacturer

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About Jia Xiao

About Us

Jia Xiao MTC was established in 2015,located in Panyu District, Guangzhou City, China.Jia Xiao MTC has been strived to innovate for the benefit of its customers since foundation.Our company has been committed to the research and development of new energy products, new material technology and service promotion, as well as the sales of insulation materials, fireproof materials, emergency rescue equipment, and the import and export of goods and its technology, which successively obtained a number of invention patents and technical achievements..

Jiaxiao MTC is a subsidiary of Hongsheng Group, which mainly deal with good quality steel business , and has won the affirmation and recognition of customers from South America, Canada, Europe, Australia, the Middle East, Africa, Russia and Southeast Asia and other countries and regions with many years of product knowledge and high quality products and service.
Based on the heat treatment steel strip industry is the core of the enterprise, facing the future, will always adhere to the customer-centric, service-oriented and market-oriented.

Our advantage

Customization process

Send order

Send an inquiry to ask about order requirements

Determine requirements

Discuss product requirements and quantities in detail

mass production

Mass production of products according to required orders

send shipping

After the product is inspected and passed, it will be packed and shipped.

Application areas

Hardened & Tempered steel strip / sheet Application areas

Circular saw blade

circular saw blade

circular saw blade

Safety belt buckle made of hardened and tempered steel strip

seat belt buckle

Saw blade made of heat treatment steel strip

Band Saw Blade

Rolling shutter door accessories made from heat treatment spring steel

Roller Shutter Springs

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