pipe cap 1.Size:Seamless -1/2-24 Welded-1/2-48 ... Caps,Seamless Caps, Forged Caps4.Material:ASTM A234WPS,ST37, Carbon Steel, ANSI WP304,304L,316,316l,Stainless Steel5.Surface:Anti rust ... ,architechtural,transportation7.Package:Wooden cases, as the customers' request pipe cap