1. Size: from 1/2" to 48"
2. Thread: NPT  BSPT  DIN  RUSSIAN
3. Thickness:SCH20,SCH30,SCH40,STD,SCH80,SCH100.SCH120,SCH160.XXS
4. Standard:ANSI,ASME,DIN,JIS,BS,GB
5. Material: carbon steel (seam & seamless)
6. Special design available as the requirements of customer
7. Packing : carton cases