API Standard Cobalt Alloy Valve Seats and Valve Balls
• 1. Valve balls and valve seats are widely used in oil fields. • 2. Valve Ball and Seat performance directly affects the use effect and service life of the sucker rod pumps.
• 3. Each ball-and-seat combination is vacuum tested to ensure a perfect seal is obtained in all positions of
contact.
Main Features
• 1. Material: Stainless steel; Cobalt Alloy, cast; Cobalt Alloy,Tungsten Carbide, Titanium Carbide .
• 2. Standard: API 11AX .
• 3. High resistance against corrosion and oxidation;
Features:
1. Different material is available according to the corrosion characteristics.
2. Different heat treatment process
Material performance table
| CODE | INSTRUCTION | HARDNESS | MATERIAL |
| A1 | Stainless steel | Ball: HRC 58-65 | UNS 41000–UNS 44000 |
| Seat: HRC 52-56 | 9Cr18Mo & 6 Cr18Mo |
| B1 | Cobalt alloy casting | Ball: HRC 56-63 | Cobalt, chromium and tungsten alloy |
| Seat: HRC 50-56 |
| B2 | Cobalt alloy, powder metallurgy | Ball: HRC 53-60 | Cobalt, chromium and tungsten alloy |
| Seat: HRC 51-57 |
| C1 | Tungsten carbide | Ball: HRA 88-89 | Tungsten with cobalt adhesive |
| Seat: HRA 88-89.5 |
| C3 | Titanium carbon compounds | Ball: HRA 89-90.5 | Tungsten and titanium with cobalt adhesive carbon compounds |
Seat: HRA 89-90.5
|
Company Information
Puyang Zhongshi Group Co., Ltd is a professional manufacturer of various oilfield equipments and cementing accessories since 1997, restructured enterprise of SINOPEC. Our group have 10 years export experience and 9 subsidiary factories, more than 500 employees. We are the first-class supplier of resources market of SINOPEC and CNPC.
We have the certificates of API 5CT, API 10D, API 11E, API 6A, API 11AX, ISO 9001 and ISO 14001. Our foreign customers are mainly from America, Central Asia, Russia, Southeast Asia, Middle East, etc.
