we can produce carbon steel cap,seamless cap,butt welded cap,
1) Size: 1/2"-48"
2) Varieties: SCH20, SGP, STD, SCH40, SCH80, SCH160
3) Standard: ANSI B16.9/16.28, ASTM,API 5L, DIN2605/2615/2616, JIS P2311/2312 ASME B36.10M---1996
4) Material: ASTM A234 WPB, carbon steel
5) Surface treatment: black rust-proof oil, transparent oil, hot galvanizing
6) Price : 0.1-900 USD/PC
7) Special design available