AA. Steel strip for roller shutter door spring
Material: C50/65Mn/CK67/CK70/SAE1070 or equal grade
Finished:  heat tempered and hardened, black or blue finished,round edges 
Specification: a) thickness: 1.2, 1.3, 1.4, 1.5 mm         
                        b) width: 40, 45 ,50, 55, 60mm Or according to your requirement 
Hardness: 47-49 HRC
Packaging:Standard packing for seaworthy

BB. Steel strip for hardwares such as mud trowel, putty knife, scaper,band saw, shoes material etc.
1) Width:40mm to 240mm 
2) Thickness: 0.3mm to 2.50mm 
3) Material: C50, 65Mn,CK67,CK70,SAE1070 etc. 
4) Tolerance: width +/-0.05,thickness+/-0.02-0.07 
5) Surface treatment: white, yellow, blue, grey, black, polished, unpolished, etc 
6) Edge: rounded, slitted, etc 
7) Hardness:40-52HRC 
8) Packing: Standard packing for seaworthy

CC. Steel Strapping for packaging 
Colors of steel packing strips:
(1) White steel packing strips
(2) Blue steel packing strips
(3) Paint baked steel packing strips(black,green,gray,yellow etc.)
Specification:
BWG28×3/8″,1/2″,5/8″ BWG27×3/8″,1/2″,5/8″ BWG26×1/2″,5/8″,3/4″
BWG25×1/2″,5/8″,3/4″ BWG24×1/2″,5/8″,3/4″ BWG23×1/2″,5/8″,3/4″
BWG22×3/4″,1″,5/4″ BWG21×3/4″,1″,5/4″ BWG20×3/4″,1″,5/4″ BWG19×3/4″,1″,5/4″
Packing:Standard export seaworthy packing or according to your requests.