Inspection: products analysisMechanical tests, hydrostatic or nondestructive test, hardness test,Intergranular corrosion test. Stainless Steel Seamless Pipes(long tube length limited 11.8m)We are a professional stainless steel seamless tubes manufacturer in china,supply pipes with high quality.SizeO.D. 1/8"to 16" W.T.:5/5S, 10/10S, 20/20S, 40/40S, 80/80S, 120/120S, 160/160S,acc. to ANSI B36.19/36 ...