TBCC has the largest stock inventory of seamless carbon steel pipe in China, comprising of ASTM specifications as well as Chinese GB. The sizes range from 1/4" to 28" (13mm to 711.2mm) with wall thickness up to 30mm. Majority of the stocks are from TPCO and others are from competitively priced quality manufacturers. The 60,000 tons of pipe inventory are stocked in a single facility of 200,000 square metres ASTM (Carbon Steel) my mail tianjinpipe at naver dat com