Hot Dipped Galvanized Seamless Steel Pipe 1.Standard:ASTM A106,A53,GB/T8162,GB/T8163 2. ... .Surface: oiled, varnished, black-painted, galvanized, 3PE anti-corrosion, etc6.Pipe ends: 1). plain end 2). bevelled end 3). both ends ... or according to your requirement. Hot Dipped Galvanized Seamless Steel Pipe