We are one of the leading manufacturer in China of precision steel strip and steel coil, processing high carbon steel strip and ally steel strip in special heat treatment including hardened and tempered conditons and cold rolled annealed condtions.

We are the largest supplier and factroy in China of 1045-1050-1070-1075 high carbon spring steel coil supplier, exporting materials to automobile, metal parts, construction tool, band saw blades industries etc.

Bimetal steel strip is used to convert a temperature change into mechanical displacement. The strip consists of two strips of different metals which expand at different rates as they are heated. The different expansions force the flat strip to bend one way if heated, and in the opposite direction if cooled below its initial temperature. The metal with the higher coefficient of thermal expansion is on the outer side of the curve when the strip is heated and on the inner side when cooled.

In our production, our facilities allow max 2.5mm thickness andmax  260mm width. We are the best heat - treating steel supplier in China, material,hardness, surface,size, can be made according to your request. Welcome to contact us at any time for any enquiry.

C67s spring steel strip is a standard material with no corrosion resistance, equivalent to CK67, SAE1070. After hardened and tempered condition, it is widely used in rolling shutter door spring, saw blade, plaster trowel, scraper, putty knives, shoe insole, spring washer, etc. Under tempered condition, Blue, bright, yellow, black, surfaces are available by adjusting the temperature and times in the furnace.

Guangzhou Cgoodsteel Co.,Ltd`s rolling door springs are well-know good quality for this application. We understand that the flexibility is the key for shutter spring when the door rolling down and rolling up and strip steel can`t be broken when bending.

c75s spring steel is a low alloy, carbon steel material with carbon content  0.72-0.84. This material can be heat-treated to the required tensile strength, operated by annealing process (CRCA) or hardened and tempered condition (Q+T). 

Guangzhou Cgoodsteel Co.,Ltd  makes hardened and tempered medium & high carbon steel strips which has excellent spring properties, unfirm hardnedd and texture, suitable for extensive applications. Quality is confirming to National standard (GB) and internation standard (DIN,ASTM etc.)

we supply good quality carbon spring steel coils with these equivalent materials:c50s-ck50-sae1050-c50,c60s-ck60-sae1060-c60,c70s-ck67-sae1070-c67,c75s-ck75-sae1075-c80