Shaft material: 40Cr(ASTM A5140) or 45#(ASTM 1045) steel. Helix plate: ASTM A36 hot rolled plate, available in 3/8\'\' and 1/2\'\' thickness. All helix leading edges sharpened and rock cut and 45 degrees. Corrosion protection: ASTM A153, hot dipped zinc coating. Efficient ...
Shaft material: Seamless high tensile pipe, conforms to ASTM A500 GRADE B or Customized. Helices material: ASTM A36 hot rolled plate. Corrosion protection: ASTM A153, hot dipped zinc coating. Leading edge of helices beveled 45 degrees. Greater section modulus strength to resist ...
Shaft material: Seamless high tensile pipe, conforms to ASTM A500 GRADE B Helices material: ASTM A36 Hot rolled plate Corrosion protection conform to ASTM A153 standard for hot dipped zinc coating Leading edge of Helices beveled 45 degrees Greater Section Modulus Strength to ...