... , S440, SQ235(CS20#),A106B ,A53,Q345 and etc. SS:304,316,304L,316L A350LF2 A182 and etc.Style: SO, WN, SW, THR ... (3000mm)Non-standard: unit piece with diameter below 3 meters and unit weight below 4 MTs, according to customers drawing.Certificate: ISO9001 ...