Seamless pipe can withstand greater pressures and is commonly used where a perfectly smooth surface is required on the inside of the pipe for transporting of fluids and materials. 0.540 OD, (1/4 NPS) Schedule 40, 304/304L Stainless Steel Pipe, Welded Stainless Steel Pipe. Seamless Stainless Steel Pipe. Dover Browse through all of our stocked stainless seamless pipe with various sizes and custom lengths in 304, 310, 316. All seamless pipe inventory is available in standard random lengths or as custom cut-to-length pieces and is in-stock and available for immediate shipment. Stainless Steel Pipes - Dimensions and Weights ANSI/ASME Stainless Steel Pipes - Allowable Pressure - Allowable pressure for standard seamless A312-TP316/316L stainless steel pipes - temperatures 100 o F to 750 o F; Stainless Steel Pipes - Comparing of American and European Standards - Comparing American - US - and European - German, British (UK) and Swedish - stainless steel pipe standards