API5L carbon steel spiral pipe 1.Size:1/2" to72" 2.Thickness:2.0 to 60mm 3. ... :ASTM A106/53 B, API 5L GR. B. API5L carbon steel spiral pipe 1) Standard: ASTM A106, A53, API 5L GR ... ) Grade:B X42, X52, GR. B, ST37, ST44, ST52, S355JR3) Size: From 1/2" to 72"4) Wall Thickness: SCH20 to ...