seamless stainless stainless pipe steel grade:304,316l,301,310S,321,321H and so on ... according to customers' requirements2) Our products are corrosion and high-temperature resistant3) The main standards are 304, 304L, 316, 316L, 321 ... , foodstuff, power,papermaking, chemical, medical equipment, aviation, boiler Seamless Stainless Steel Pipe