a) hot finished
b) cold finished

ad a) tube diameter 1/4“ do 24“
         wall thickness od schedule SS do 160 (XXS)

ad b) tube diameter 1/4“ do 4 3/4“
         wall thickness od schedule SS do 160 (XXS)

ASTM A53, A106, A179, A192, A199, A210, A213, A335, A450, A530, A556

1. construct a carbon steel materials
   Grade A,B,C; Grade 1 a 6
2. alloy materials
   Grade P1/T1, P2/T2, P5/T5, P11/T11
   Grade P12/T12, P22/T22, P91/T91