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Oil and gas systems operate under high pressure, high temperature, and harsh corrosive environments, requiring reliable components to ensure safe, efficient, and stable operation. From onshore drilling to offshore platforms, from refining processes to long‑distance transmission, every valve, pipe, fitting, and flange plays an irreplaceable role.
Gate valves are mainly used for full opening or full closing of crude oil, natural gas, and refined oil pipelines. They provide extremely low flow resistance when fully open, minimize pressure loss, and are widely used for pipeline isolation during maintenance and emergency shutdowns.
Recommended Materials
Carbon steel: General medium‑pressure and medium‑temperature pipelines
Forged steel: High‑pressure and high‑temperature wellhead and gathering systems
Stainless steel: Sour gas and corrosive medium environments
- Main transmission pipelines for oil and gas
- Station inlet/outlet and manifold pipelines
- Large‑diameter long‑distance pipelines
Globe valves use linear movement of the disc to precisely control flow and pressure, with excellent sealing performance. They are ideal for occasions requiring accurate adjustment and are not suitable for large‑particle media.
Recommended Materials
Forged steel: High‑pressure small‑caliber occasions
Stainless steel: Corrosive and high‑purity media
- Instrument air and auxiliary steam systems
- Small‑flow high‑precision control pipelines
- Pressure regulating branch and bypass pipelines
Check valves automatically open/close relying on medium pressure to strictly prevent backflow, protect pumps, compressors, and key equipment from damage caused by reverse flow, and maintain one‑way flow stability.
Recommended Materials
Carbon steel: General oil and gas pipelines
Forged steel: High‑pressure pump stations
Stainless steel: Corrosive medium occasions
- Pump outlet and compressor outlet pipelines
- Multi‑source connected supply networks
- Heating and process medium return pipelines
Plug valves use rotating plug to realize quick switching, with simple structure, small flow resistance, and strong dirt resistance. They support multi‑way flow distribution and are suitable for frequent operation.
Recommended Materials
Carbon steel: Conventional working conditions
Stainless steel: Corrosive media
Forged steel: High‑pressure occasions
Application Scenarios
Multi‑branch process switching pipelines
Storage tank farm blending and distribution systems
Mud and medium with small particles
Ball valves achieve 90° quick opening/closing with rotating ball structure, featuring zero leakage, strong sealing, and wide adaptability to high pressure, high temperature, and harsh media. They are core components in oil and gas systems.
Recommended Materials
Forged steel: High‑pressure Class 600–2500 working conditions
Stainless steel (316L): Offshore and sour gas environments
Carbon steel: General transmission pipelines
- Wellhead Christmas tree and manifold systems
- Natural gas transmission and distribution stations
- LNG storage and transportation pipelines
- Refinery key process pipelines
Butterfly valves realize on/off and throttling by rotating the disc. They feature compact structure, light weight, quick operation, and are suitable for large‑diameter low‑pressure to medium‑pressure occasions, supporting flow regulation.
Recommended Materials
Carbon steel: Conventional non‑corrosive working conditions
Stainless steel: Corrosive gas and liquid pipelines
- Refinery cooling water and circulating oil systems
- Large‑diameter auxiliary pipelines and vent lines
- Storage tank farm inlet/outlet and fire protection systems
Knife gate valves use sharp gate to cut media, especially suitable for slurry, particles, and viscous media, with anti‑clogging and compact structure.
Application Scenarios
Sewer and waste liquid discharge pipelines
Sludge and residue pipelines in refineries
Coal water slurry and oil sand slurry systemsCoal water slurry and oil sand slurry systems
Control valves automatically adjust flow, pressure, temperature, and liquid level according to system signals, realizing intelligent and stable control of oil and gas processes.
Application Scenarios
- Distillation tower and reactor flow control
- Natural gas pressure regulating and metering stations
- Refinery temperature and pressure closed‑loop control systems
Pipe fittings connect pipes, change direction, branch, and reduce diameter, forming a complete pipe network that adapts to complex layout needs.
Common Types
Elbows, tees, reducers, caps, couplings, etc.
Flanges provide detachable high‑strength sealing connections between pipes, valves, and equipment, ensuring no leakage under high pressure and high temperature.
Application Scenarios
- Valve and equipment pipeline connections
- Pipeline maintenance easy disassembly sections
- Station and plant area key nodes
| Component | Main Function | Typical Applications | Recommended Material |
| Gate Valves | On/off service, low flow resistance | Main pipelines, manifolds, station isolation | Carbon Steel; Forged Steel (HP/HT); Stainless Steel (sour service) |
| Butterfly Valves | On/off & basic throttling | Large dia low pressure lines, tank farms | Carbon Steel; Stainless Steel (corrosive) |
| Globe Valves | Precise flow & pressure control | Instrument lines, small bore control | Forged Steel; Stainless Steel |
| Ball Valves | Quick on/off, zero leakage, high pressure | Wellheads, transmission, LNG | Forged Steel; Stainless Steel (316L); Carbon Steel |
| Check Valves | Prevent backflow | Pump/compressor discharge | Carbon Steel; Forged Steel; Stainless Steel |
| Plug Valves | Quick switching, multi way flow | Blending, tank farms, slurry lines | Carbon Steel; Forged Steel; Stainless Steel |
| Knife Gate Valves | Slurry / particle media shut off | Sludge, waste, oil sand slurry | Carbon Steel; Stainless Steel |
| Control Valves | Auto flow/pressure/temp control | Process units, metering stations | Forged Steel; Stainless Steel |
| Pipes | Medium transportation | Long distance, process, wellhead | Carbon Steel; Forged Steel; Stainless Steel |
| Fittings | Connect, turn, branch, reduce | All pipeline networks | Match pipe material |
| Flanges | Detachable high strength connection | Valve/equipment joints | Carbon Steel; Forged Steel; Stainless Steel |
Gate valves: Focus on diameter, pressure class, and medium; large‑diameter full port preferred
Butterfly valves: Select based on pressure resistance and regulation needs; large‑diameter low‑pressure priority
Globe valves: For precise adjustment; small‑caliber high‑pressure use forged steel
Ball valves: Key high‑pressure links use forged steel; corrosive environments use 316L
Check valves: Match pump and compressor parameters to prevent backflow
Plug valves: Frequent operation and particle media preferred
Knife gate valves: Slurry and viscous media dedicated
Control valves: Match control accuracy and medium characteristics
Pipes & fittings: Match pressure, temperature, and corrosion level; unified material with flanges
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