... , aluminum, carbon, stainless steel: 201, 304, 316, 316L, Steel tube specification: 21*2.0, 22*2.0, 18*2.0, 25 ... *2.0, and so on. Steel tape specification: 10*0.3, 12*0.3, 15*0.3 and ... are: Dimensional accuracy, rugged construction, High sturdiness, Corrosion resistance, Suitable hardness, Durability, Abrasion resistance, Resistant to extreme temperature, High operation efficiency ...