... 3.Standard:GB/T9112 4.Qualification:API,CE,ISO Detailed description of carbon steel tee Tee TypeEqual tee, reducing tee,lateral tee ... .Welcome to contact us. Tianjin Taishouxing Steel Co.,Ltd (years of manufacturing experience)Taishouxing steel pipe CO., LTD, as the domestic ... such as ASME/ANSI, JIS, DIN, and satisfy the needs of different steel materials. We were also certified with ISO9001, CRN ...