... Material of commonly used stainless steel:TP304,TP321,TP316L,TP309S,TP310;Material of other stainless steel:202,302,INCOL800,840 ... metal tubular heaters, hot runners, temperature controllers/heaters, air-conditioning, refrigerators and other household appliances, electric heating ... status at delivery: bright/annealing Note:Producing stainless steel welded pipes used for electric heating tubes for ...