Short joints and threads
日期：2020-08-06 / 人氣： / 來源：未知
| API series premium thread |
| premium thread officially authorized by international well-known factories |
| API series |
| Non-API H2S stress corrosion resistance series |
| Economical CO2 resistance and CO2 +H2 S corrosion resistance series |
| Super 13Cr series |
| Nickel base alloy series (4C, 4D) |
作者：admin