About ATT. Products. Steel Pipe/tube Carbon Steel&alloy Steel Pipe. Stainless Steel Pipe. Bw Pipe Fitting Con/ecc. Reducer. Stub End. Bend. Tube Sheet. Elbow. Steel Cap. Tee. Flange Welding Neck Flange. Slip On Flange. Threaded Flange. Plate Flange. Lap Joint Flange. Blind Flange. Socket Weld Flange. Forged Pipe Fitting Sw Fittings. Threaded Fittings. Quality Control. TechnologyShanghai ATT Pipe Fitting Manufacturing Co. - pipe Shanghai ATT Pipe Fitting Manufacturing Co. is leading professional manufacturer and exporter of stainless steel/carbon steel/alloy steel pipe fittings, elbows,tees,cross, reducers,bends,flanges,pipes. with all kinds of different materials and standards of GB, ANSI,,ASME,AISI,API,UNI,GOAST,NF, JIS, DIN, BS, non-standard.