... is upto customer's needs, various colors are available: green, black, yellow, gray, brown, etc.)Physical Properties:(1) Type I ordinary ... steel packing strip: Tensile strength σb ≥ 58-78Kg/mm2(580-780Mpa), elongation: 3% -5%.(2) ... : high strength, good performance and well impact resistance. Tensile strength σb ≥ 90-100Kg/mm2(900 1000Mpa), elongation: 5% -10%.Common ...