... 201,304,202,301,316,316L ss seamless pipe/tube ISO9001:2000 ASTM/AISI standard Grade 304,316L, ... water conservancy, electric power, chemical industry, chemical fiber and medical machinery etc.ss seamless pipe/tubeWe will provide products ... anneal, pickling, manual polish and mechanical polish3) Chemical and Physical characteristic: durable, corrosion resistant and high-temperature resistant4) We also ...