... ,JIS,GOST 9941-81 6. Size: A) NPS: 1/8" to 10" B) Schedule: 5/5S, 10/10S, 20/20S, 40 ... /80S, 120/120S, 160/160S, acc. To ANSI B36.19 C) O. D.: 10 mm to 273 mm D) W. T.: 1 ... mm to 20 mm E) Length: Max. 15 ... /bundle packaging 9. Certificate: ISO 9001: 2008 NPS: 1/8" to 10" 321 seamless stainless steel pipes