In most cases, TP 316L containing 10 Nickel will be sufficient for general corrosive services. The main ASTM standards we produce are ASTM A269, A270, A312, A554 and A249 for your divergent demands. At Wisine, the supply of our stainless steel capillary tubes comes in multiple dimensions and various grades. The main grades are 316(L), 304(L), 321(H), 309S and 310S. If you want non-standard size or grades not listed in our datasheet, we can customize for you upon our confirmation. For standard size of common grades, we have ex-stock for fast delivery. We can also provide small pieces of free samples upon your request for you to check quality. If you are interested in our stainless steel capillary tube, just call us or drop us an email, our sales will come to you shortly.