Application: Protecting drill pipe threads
 Material: Plastic or Plastic Steel
 Standard: API 5CT
 Connection: Red, Black, etc
 Main material:steel, HDPE
| Sizes & Thread | 
All plastic | 
 Composite type 
ASM(CEL) 
 | 
 Composite type 
ASM(CENL) 
 | 
| NC23 | 
  | 
√ | 
  | 
| NC26(2 3/8"IF) | 
√ | 
√ | 
√ | 
| NC26 DSTJ | 
  | 
  | 
  | 
| NC26(2 7/8"IF) | 
√ | 
√ | 
√ | 
| NC26 DSTJ | 
  | 
  | 
  | 
| NC35 | 
√ | 
√ | 
√ | 
| NC38(3 1/2"IF) | 
√ | 
√ | 
√ | 
| NC38 DSTJ | 
√ | 
√ | 
√ | 
| NC40(4"FH) | 
√ | 
√ | 
√ | 
| NC40 DSTJ | 
√ | 
√ | 
√ | 
| NC44 | 
√ | 
√ | 
  | 
| NC46(4"IF) | 
√ | 
√ | 
√ | 
| NC50(4 1/2"IF) | 
√ | 
√ | 
√ | 
| NC50 DSTJ | 
√ | 
√ | 
√ | 
| NC52 | 
√ | 
√ | 
  | 
| NC56 | 
√ | 
√ | 
  | 
| NC61 | 
√ | 
√ | 
  | 
| NC70 | 
√ | 
√ | 
  | 
| 5 1/2"FH | 
√ | 
√ | 
√ | 
| 5 1/2"FH DSTJ | 
√ | 
√ | 
√ | 
| 6 5/8"FH | 
√ | 
√ | 
  | 
| 6 5/8"IF | 
√ | 
  | 
  | 
| 2 3/8"REG | 
√ | 
√ | 
√ | 
| 2 7/8"REG | 
√ | 
√ | 
√ | 
| 3 1/2"REG | 
√ | 
√ | 
√ | 
| 4 1/2"REG | 
√ | 
√ | 
√ | 
| 6 5/8"REG | 
√ | 
√ | 
√ | 
| 7 5/8"REG | 
√ | 
√ | 
√ | 
| 8 5/8"REG | 
√ | 
√ | 
√ | 
| 2 7/8"PAC | 
√ | 
√ | 
  | 
| 2 3/8"PAC | 
  | 
√ | 
  | 
| 4 1/2"H-90 | 
√ | 
√ | 
  | 
| 5"H90 | 
√ | 
√ | 
  | 
| 6 5/8"H-90 | 
√ | 
√ | 
  | 
| 7 5/8"H-90 | 
√ | 
√ | 
  |