... resistant, corrosion-resistant Seamless pipe for Petroleum, chemical, electric power,Boiler industry16-824×2-100 Casing pipe J55 N80, P110API SPEC ... Low and Medium Pressure Boiler-boiling tube,-motorcycle-smoke tube10-530×2-40 Oil cracking tube 2012CrMo15CrMoGB9948-88-furnace tube for Refined ... 5L GR.B, X52,X60 API-for petroleum,natural gas, industrial dilivery(gas,water,oil)60-630×1.53-40 Rectangular ...