PIPE BLACK STELL WELDED GALVANIZED WELDED BLACK STEEL SEAMLESS GALVANIZED SEAMLESS welded seamless Material : Carbon steel : 20,40Stailess steel : 10,20,40,304,304L,316,316Lclass : Carbon steel :20,40size ½” – 24″ Material :Carbon steel : 40,80,160Stailess steel : 304,304L,316,316LClass :Carbon steel : 40,80,160Stainless steel : 40,80size ½” – 24″ +62216283025-26