Investment Casting & Industrial Valves 
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Stainless Steel Bolted Bonnet Globe Valve (GB Globe Valve)
- Design & Manufacture: GB/T 12237
- Face-to-Face: GB/T 12221
- Flange End: JB/T79
- Inspection & Testing: JBf T9092
- Surface Treatment: Pickling, Passivation, Polishing (or as per customer request)
- Operating Temperature: ≤ 120°C
- Suitable Media: Water, Steam, Oil, Gas, Acids, Alkalis, etc.
Test Pressure
| Test Item | Shell Test | Seal Test | Back Seal Test | Air Seal Test | |
| Medium | Water | Air | |||
| Nominal Pressure (MPa) | 1.6 | 2.4 | 1.8 | 1.8 | 0.6 |
| 2.5 | 3.8 | 2.8 | 2.8 | ||
| 4.0 | 6.0 | 4.4 | 4.4 | ||
| 6.4 | 9.6 | 7.0 | 7.0 | ||
Valve Parts
| Component | Material | |||
| Body/ Bonnet | CF8 | CF8M | CF3M | WCB |
| Wedge | Cf8 | CF8M | CF3M | WCB |
| Gland | CF8 | CF8M | CF3M | WCB |
| Stem | F304 | F316 | F316L | 2CR13 |
| Stem Nut | Aluminium Bronze | |||
| Packing/Gasket | PTFE/ Graphite | |||
| Bolt | Stainless Steel | 35CrMoA | ||
| Nut | Stainless Stee | 45, 35 CrMoA | ||
| Handle | Cast Steel | |||
Investment Casting & Valve Manufacturing Since 1987
At SDPLDL, we are a trusted manufacturer specializing in precision investment casting and industrial valves for global markets. We operate our own manufacturing facility featuring over 200 sets of advanced manufacturing equipment and an in-house testing center equipped with 16-ton dynamic balancing machines. Our integrated manufacturing capabilities allow us to seamlessly produce precision investment casting valves, custom stainless steel large-diameter valves, and slurry valves under strict compliance with ISO 9001 standards.
