... carbon steel, stainless steel,ANSI B36.10 pipe carbon and alloy steels Applications and Features :We are professional manufacturer of steel ... environmentalist steel, Q235 steel and other special steel. We have various goods in different sizes, the precision comes to H7, ... 350mm 2. main material: 12L14, 1215,45#, Q235 and etc. 3. quality control: ISO9001-2000 4. figure: round, hexagon, square, flat ...