Standard API | ASTM | BS | DIN | DNV | GB | ISO | JIS | KS | LR | NF | Others
NF
Standard Number
A49-647 (Steel Tubes Structural Welded Tubes Circular Square Rectangular or Oval in Ferritic or Austenitic Stainless Steels )
Grade TSZ2CN18-10 TSZ6CN18-09 TSZ6CND17-11 TSZ12CN17-07 [ All grade ]