OIL & GAS CASTINGS
High-Quality Custom Oil & Gas Castings
SIMIS is an experienced metal casting foundry in China that produces high quality oil and gas castings. Our facilities use investment casting, sand casting, shell mold casting, and die casting to support custom and OEM orders. The manufacturing process includes CNC machining, heat treatment, and surface finishing, followed by a full range of quality tests to meet rigorous industrial standards and your specific project requirements.
We regularly cast parts for drilling tools, downhole equipment, blow-out preventers, wellheads, pipelines, valves, pumps, compressors, and offshore infrastructure. These are produced using various material grades that meet international standards. Our technical team is available to help you choose the optimal material and casting process for your application.
What are Oil & Gas Castings?
Oil and gas castings are metal parts made to resist high pressure, extreme temperatures, and corrosive fluids. They are produced by pouring molten metal into molds, then cooling and processing the solid form. Typical examples include cross coupling cable protectors, locking dog assemblies, and pipe fittings. We choose the casting process based on part shape and required precision
Metal casting offers benefits like complex internal geometries, high precision, and structural integrity. Some designs are too expensive or impossible to produce through forging or machining. SIMIS produces oil and gas castings using various metals, including stainless steel, alloy steel, aluminum, and copper alloys.
In the oil and gas industry, each component is safety critical, and we treat this responsibility seriously. Oil and gas castings produced by us must pass a complete inspection to reach a high quality standard to ensure safety and efficiency.
Our Oil & Gas Parts Casting Processes
We use investment casting, die casting, shell mold casting, and sand casting to manufacture high-quality parts for the oil and gas industry. These different processes are used to create a broad range of parts and components depending on structure, size, weight, tolerance requirements, materials, and surface smoothness. We use the unique advantages of each casting method to determine the best approach for your specific alloy requirements, budget, quantities, and timelines.
Investment Casting
Investment casting is commonly used to produce complex oil and gas castings requiring tight dimensional tolerances and smooth surface finishes. It is designed for small to medium components with intricate structures and thin walls, suitable for ferrous and non-ferrous alloys.
Die Casting
We use both gravity and high pressure die casting to produce aluminum and copper alloy parts for the oil and gas industry. Both die casting processes are highly efficient and can produce lightweight components with tight tolerances, smooth surface finishes, and decent structural strength.
Shell Mold Casting
Shell mold casting is mainly used for producing steel or iron components for the oil and gas industry. It uses resin-bonded sand to effectively produce medium-sized castings with consistent surface quality, and it can be used to produce parts with complex internal structures with the use of core inserts.
Sand Casting
Sand casting is frequently used to produce large and heavy oil and gas castings like valve bodies, high-pressure housings, and structural components. It is an effective method for casting parts with thick walls and structural integrity, and it can be used for casting parts from a wide range of metals for this sector.
Advantages of Casting for Oil & Gas Parts
Casting methods produce parts and components that are usually difficult to manufacture through forging, machining, or fabrication. In general, casting processes offer several advantages for manufacturing parts used in the oil and gas sector, such as high structural integrity, extensive material versatility, design flexibility, efficiency at producing high volumes, and great dimensional accuracy. By using these processes, we can deliver reliable oil and gas castings while helping you manage your total budget.
Structural Integrity
We often manufacture oil and gas parts as a single casting rather than welding or bolting separate pieces. This method removes seams and joints to create a solid metal unit that can better manage high-pressure environments. By eliminating these connections, the parts become more reliable and have a longer service life in the field.
Material Versatility
Our selection of metals helps meet the different requirements of oil and gas applications. We use many types of alloys, including carbon steel and specialized iron, to fit the needs of your specific job site. You can choose the material that provides the strength and long life needed for your components.
Design Flexibility and Complexity
Many oil and gas parts have complex shapes that are hard to make by cutting or joining metal. Casting allows us to build these features, like internal chambers and detailed curves, right into the mold. This way, we can produce specialized equipment that matches your exact technical needs.
Cost Efficiency for High Volume Production
Casting is a cost-effective way to manufacture oilfield components in high volumes. After the initial tooling is made, the price for each individual part drops. Casting processes support quick production timelines, which helps you meet large order demands and stay within your project budget.
Dimensional Accuracy
Casting is an efficient way to produce oil and gas parts because it creates almost no scrap metal. We pour the exact amount of metal needed into a mold rather than machining a block. Any extra metal from the process can be recycled and used again.
Common Casting Materials for Oil & Gas Parts
We offer many metal choices for oil and gas parts to meet different project needs. The specific metal alloy used helps the part handle high pressure and tough environments. We work with hundreds of material grades, including stainless steel, alloy steel, carbon steel, copper alloy, aluminum alloy and cast iron, following international standards like ASTM and EN. This variety helps us produce custom components that match your technical specifications and follow industry requirements.
Stainless Steel
We use stainless steel to cast oil and gas components as it provides high corrosion resistance. This material helps hardware stay functional in wet and corrosive environments and is a common choice for casting offshore equipment such as wellhead connectors and valve bodies.
Alloy Steel
Alloy steel is a commonly used casting material in the oil and gas industry as it offers high toughness and strength. Parts like cross coupling protectors or heavy duty pipe clamps made from this metal can resist heavy loads and extreme stress, which is helpful for extreme environments.
Carbon Steel
Carbon steel is an economical material for oil and gas castings compared to alloy steel. It can be used for parts that require high strength and toughness and can withstand high pressure and temperature. This metal helps keep project costs low while providing excellent durability in the field.
Copper Alloy
Copper alloy is an excellent choice for oil and gas castings due to its resistance to salt water and its ability to stop biofouling. This metal allows components like pumps and fittings to stay reliable in difficult sea conditions. It also offers high strength and decent wear resistance.
Aluminum Alloy
Aluminum alloy is an ideal casting material in the oil and gas industry. This material has a great strength-to-weight ratio and provides natural corrosion resistance and high thermal conductivity. It is easy to machine and suitable for casting parts like compressor housings and reservoir tank bodies.
Cast Iron
Cast iron is widely used in the oil and gas sector as a casting material due to its high strength, excellent vibration damping, and high wear and corrosion resistance. It provides excellent machinability and thermal stability for various applications. This metal is also cost-effective and has good castability.
Typical Oil & Gas Components We Cast
SIMIS manufactures diverse oil and gas components using several precise casting techniques. We provide standard and customized oil and gas castings for drilling, completion, and production. Typical products include systems for pressure control, electrical piping, structural handling, and fluid storage. We also cast parts for wellheads and downhole tools. These custom castings are produced to fit your specific material requirements. The following list features our standard oil and gas parts.
Locking Dog Assembly
Recommended Materials
These components must handle high axial loads and constant mechanical cycling, so the materials and casting processes prioritize hardness and toughness. The main materials are low-alloy steel (4130/8620), 17-4PH stainless steel, or specialized nickel alloys.
Recommended Processes
Locking dogs are small with complex, tooth-like geometries requiring high precision. Investment casting is common for manufacturing these intricate shapes with high accuracy. Shell mold casting is used for standard-sized dogs in high volumes.
Cross Coupling Protector
Recommended Materials
We use alloy steel to cast these components as it withstands heavy mechanical loads and high pressures found in downhole environments. This material allows the protectors to stay durable during installation and long-term use.
Recommended Processes
We use rapid-drying investment process to produce these parts with precise internal dimensions. This method creates the complex shapes needed to fit around cable and tubing. It provides a clean surface finish while keeping the production cycle efficient.
Pipe Clamp
Recommended Materials
We use stainless steel or carbon steel to cast these clamps for corrosive or high-strength applications. Carbon steel offers high strength and impact resistance, while stainless steel provides excellent corrosion resistance for clamps exposed to chemicals.
Recommended Processes
Depending on the size, tolerance requirements, and materials used, we cast these pipe clamps using investment casting, shell mold casting, or sand casting. Investment casting is the most precise method of the three.
Pipe Fitting
Recommended Materials
We regularly cast pipe fittings in various grades of stainless steel, duplex stainless steel, alloy steel, and carbon steel. Stainless steel is the most used material for fittings because of its resistance to pitting and crevice corrosion in acidic environments.
Recommended Processes
The specific process is chosen based on the complexity of the fitting (elbows, tees, or crosses) and the required wall thickness. We use investment casting for stainless steel pipe fittings and sand casting for larger pipe fittings with thick walls.
Gas Valve Body
Recommended Materials
We often cast these valve bodies in carbon steel, stainless steel, low-alloy steel, and ductile iron. The material choice depends on the service environment, such as those containing hydrogen sulfide or requiring high-pressure transport.
Recommended Processes
Depending on the material used, we select different casting processes. For stainless steel, alloy steel, and carbon steel gas valve bodies, we use the investment casting technique, while for ductile iron (ADI) valve bodies, we use shell mold casting.
Oil Pump Impeller
Recommended Materials
We frequently cast oil pump impellers using stainless steel, cast iron, and copper alloy. Stainless steel is highly resistant to pitting and erosion-corrosion, cast iron provides good impact resistance, and copper alloy is used for spark resistance.
Recommended Processes
Investment casting is most common for high-performance or stainless steel impellers, it allows for the creation of intricate and thin-walled vanes and complex internal geometries. Shell mold casting is used for producing cast iron impellers.
Conduit Body
Recommended Materials
We cast these conduit bodies using aluminum alloy and stainless steel. Aluminum alloy is the most common casting material as it is lightweight, corrosion resistant, and easy to cast. SS316 is the high-end choice for offshore drilling rigs.
Recommended Processes
Die casting is the primary method for producing aluminum conduit bodies. It allows for very thin walls and complex shapes with high dimensional accuracy. Investment casting is used for high-grade stainless steel conduit bodies.
Blow-Out Preventor Body
Recommended Materials
At SIMIS, we cast this component using low-alloy steel (AISI 4130). This is the industry standard as it provides an excellent balance of strength and ductility. It can be heat-treated to achieve the specific hardness levels required by API standards.
Recommended Processes
Due to the massive size and weight of a BOP body (can weigh over several tons), sand casting is the primary manufacturing method. This process can pour the large volumes of molten steel required for these heavy-section components.
Connector
Recommended Materials
The casting materials for connectors are based on the fluid chemistry and whether the nonnector is used on the surface or underwater. HSLA steel, SS316 stainless steel and duplex stainless steel are very commonly used for casting these parts.
Recommended Processes
Investment casting is the standard process for small to medium sized connectors, especially those made of stainless steel and duplex stainless steel. Sand casting is used for larger-diameter flange connectors or heavy-duty structural connectors.
Link Arm
Recommended Materials
Link arms can be cast in HSLA, carbon, stainless (17-4PH), and manganese steel. The choice depends on required properties like load capacity, impact strength, and whether the arm operates in a corrosive marine environment.
Recommended Processes
Investment casting is used for smaller, high-precision link arms found in automated pipe-handling tools. Sand casting is the standard process for large, heavy link arms used in crane assemblies or blowout preventer (BOP) handling systems.
End Cap
Recommended Materials
The material for an end cap is usually selected to match the piping system it is sealing to prevent galvanic corrosion and allow for weld compatibility. Suitable materials are carbon steel, low-alloy steel, stainless steel, and duplex stainless steel.
Recommended Processes
Sand casting is used for large or thick-walled end caps in high-pressure service. Investment casting is used for smaller, high-precision end caps in small-bore piping or valves. Shell molding is used for medium-sized end caps produced in high quantities.
Reservoir Tank Body
Recommended Materials
Reservoir tanks are used to store hydraulic fluids, lubricants or chemical additives. They must withstand internal pressure, resist external corrosion and prevent fluid contamination. Common materials are aluminum alloy and stainless steel.
Recommended Processes
Die casting is used for aluminum reservoir bodies in hydraulic power units. It allows high-speed production of tanks with thin, consistent walls. Investment casting is used for specialized, high-precision stainless steel or specialty alloy reservoirs.
Surface Treatment Options for Oil & Gas Castings
We apply surface treatments as standard finishes to protect oil and gas castings against corrosion and wear. These processes help each component last longer in the field. Our in-house management of these treatments helps maintain low costs and high quality. We offer black oxidizing, anodizing, powder coating, painting, galvanizing, and electroplating. Each finish is chosen to match the specific environment where the parts operate, while also considering budget and aesthetic requirements.
Black Oxidizing
Black oxidizing applies a protective dark layer to oil and gas castings. This finish provides light rust resistance and minimizes surface glare. We use this process for high-precision components because it adds protection without changing the dimensions or tolerances of the part.
Anodizing
Anodizing creates a thick oxide layer to protect oil and gas castings from wear. We use this process for aluminum parts to increase surface hardness and stop corrosion. This treatment is selected for components that need a durable finish in harsh offshore environments.
Powder Coating
Oil and gas castings receive a durable barrier through powder coating. Shielding components from impact damage and harsh environments is the primary use for this finish. Specific colors and strong protection against external elements are provided by applying it to visible parts.
Painting
Protecting large oil and gas against rust and weather damage is the primary use for industrial painting. This process allows applying specific colors to match existing machinery or your brand. Moisture is kept from the metal surface during operation by the smooth barrier this paint creates.
Hot-Dip Galvanizing
We use hot-dip galvanizing for oil and gas parts that stay outdoors or in damp areas. This treatment forms a tough, rust-proof shield by dipping the casting into molten zinc. Long-term corrosion protection is provided by the zinc layer for the metal without the need for extra maintenance.
Electroplating
For small hardware and precision tools, we use electroplating to guard against friction and rust. This process adds a thin, protective metal layer to the surface of oil and gas castings. When a clean look and improved durability are needed, this treatment is prefered.
Our Advanced Oil & Gas Casting Specialties
CAD software, 3D printing for prototypes, and 3D scanning with CMM allow us to provide exact designs and reverse engineering for any oil and gas casting component. At SIMIS, these advanced production methods create heavy-duty parts quickly and accurately. Using these processes helps reduce total expenses while preventing defects during production.
Tooling Design
We produce high-quality molds for specialized heavy equipment parts. By using CNC precision machining, we create accurate tooling that fits the requirements of your casting project.
Prototyping
To test designs, we produce 3D-printed samples of oilfield parts. The rapid prototyping process allows us to check the shape and fit of a part quickly to confirm the design before full production starts.
Reverse Engineering
Gathering data from your current parts is done through 3D scanning. We use this information to re-create accurate castable designs for new oil and gas castings based on your exact material requirements.
Casting Simulation
Before we produce any oil and gas components, professional casting simulation tools analyze metal flow and cooling rates. This step allows necessary adjustments and helps us avoid internal defects in final parts.
Why Choose SIMIS for Oil & Gas Castings?
Our engineers use their experience to watch over every step of the casting process at SIMIS. We coordinate everything at our own facility to meet your specific material and design needs for oil and gas castings. Our proactive and comprehensive approach allows us to provide the correct parts for your projects. We meet your precise and challenging requirements while saving you time and money on every industrial order.
Quality Assured
Every oil and gas casting order receives full tracking. We include chemical reports and physical test data to confirm material strength and quality for each of the finished parts.
Rich Experience
Decades of experience help us support your specific oil and gas requirements. We oversee every step from mold design to final delivery, which helps your project reach its defined goals today.
Customization Capabilities
For complex shapes, specific alloys, and many types of surface finishes, our team uses flexible methods to match your current oil and gas project needs and specifications.
Material Expertise
To match structural needs and performance goals, our team provides guidance on alloy grades. We help you choose materials for your specific oil and gas component casting needs.
Competitive Pricing
To lower production costs, we use automated casting and finishing production lines to manufacture oil and gas components at competitive rates.
Fast Turnaround
Combining casting simulation, rapid prototyping, and automated production, we significantly shorten lead times for orders compared to the industry standards.
Value-Added Services
Every customer receives benefits from our extra services for oil and gas castings. By overseeing quality standards, schedules, and logistics, our workflow uses assembly, surface finishing, machining, and heat treatment to speed up lead times and lower costs.
Oil & Gas Casting Frequently Asked Questions
(FAQs)
Which casting process do you use to produce cross coupling cable protectors (CCCP)?
We are a major manufacturer in China producing cross coupling cable protectors (CCCP). At our factory, we use a sub-variation of investment casting called quick-drying investment casting. Parts like cross coupling protectors produced by this process have a uniform surface finish, high structural integrity, and are less prone to defects like deformation.
The drying time for each layer of shells requires only 2 hours, so it decreases the overall lead time of production. In contrast, traditional silica sol investment casting takes a much longer time as the shell drying time is significantly longer. Although the surface quality of quick-drying investment casting is relatively rough, it works well for oil and gas components like cross coupling protectors.
Which low-temperature alloy steel or carbon steel do recommend for pipe clamps used in Siberia?
We recommend ASTM A352 Grade LCC low temperature carbon steel for pipe clamps used in Siberian environments. This material is a suitable choice for oil and gas casting components because it avoids the brittleness common in standard carbon steels during winter.
Our factory uses this alloy to produce parts that remain reliable even in sub-zero conditions down to -46°C. The chemical composition of LCC provides better weldability and higher impact toughness than LCB, which helps the clamps withstand the physical stress of frozen pipelines.
Can you help me select casting materials for my oil and gas components?
Yes, of course. We possess deep material knowledge and our foundry can cast hundreds of different grades of metals. We will evaluate your products’ use environment and performance requirements and your budget range to determine the most suitable material.
We analyze wear patterns and chemical exposure to recommend alloys that extend the life of your oil and gas casting components. Our staff provides technical support to help you navigate the differences between various grades and material standards for your specific casting needs.
Would you be able to recommend surface treatment for oil and gas parts post-casting?
Yes absolutely. There are many surface finishing options to choose from, and we can apply popular treatments at our own facilities. Choosing the optimal surface treatment depends on several factors: the operational environment, the specific metal alloy used, and the desired lifespan of the oil and gas casting component. For example, parts exposed to saltwater require different coatings than those used in dry environments. We look at these conditions to help you select between options like zinc plating, epoxy painting, or hot-dip galvanizing.
Can you recommend casting processes to produce downhole equipment for me?
Yes, we can. The best casting process depends on the size, complexity, tolerance, material, and performance requirements of the downhole tool.
Investment casting is a highly accurate metal casting process which can produce complex oil and gas components with a smooth surface finish and intricate internal structures. This is best for flow control components, such as valve internals and small sensor housings where tight tolerances are required. Investment casting is also ideal for stainless steel oil and gas parts, as it produces components with fewer defects like porosity, given the reactive nature of stainless steel.
Shell mold casting can also be used for manufacturing oil and gas castings that are small to medium-sized. It produces parts with smoother surface quality and higher tolerances than sand casting. Sand casting is a versatile method designed for casting large and heavy parts. Whereas die casting (both pressure die casting and gravity die casting) is almost exclusively reserved for casting non-ferrous alloys at high efficiency.
We will need to understand your exact quantity, lead time expectations, and budget to determine the optimal casting process to produce this particular downhole equipment.
How do you verify the impact resistance of oil and gas castings?
We verify the impact resistance of oil and gas castings primarily through Charpy V-notch testing. This test measures the energy a metal sample absorbs during fracture, which indicates the toughness of the material. For equipment like high-pressure valve bodies or oil pump impellers that face constant vibration and pressure cycles, we perform these tests to verify material durability.
Our foundry also uses chemical analysis and ultrasonic testing to look at the internal structure of the casting. These methods help us find any internal flaws that could weaken the part. After performing these tests, we provide data that proves the casting can handle sudden physical shocks or high-pressure loads in the field.
Can you weld multiple pieces of oil and gas castings together?
Yes, we can. Our foundry provides welding services to join multiple oil and gas castings into larger, more complex assemblies. This process allows for the creation of components that are too large or too intricate to cast as a single piece. We use different welding techniques based on the metal grade and the final application of the part.
Choosing the right welding method depends on several factors, primarily the material grade. While low carbon steels like LCC are easy to weld, specialized alloys may need specific filler materials to match the chemical properties of the casting. We use machining to create precise bevels on the edges, which allows for deep weld penetration and a strong bond. After welding, we often apply a post-weld heat treatment (PWHT) cycle to remove internal stresses and reduce the risk of cracking in the field.
Our team looks at your design to determine the best locations for weld joints. This helps the final assembly withstand high-pressure loads and vibration during drilling or production operations. We also perform non-destructive testing, such as X-ray or magnetic particle inspection, on the weld seams to check for internal flaws.
What methods do you use to check that oil and gas castings are free from defects?
We use several non-destructive testing (NDT) methods to look for both surface and internal defects. For surface inspections, we use magnetic particle inspection (MPI) and dye penetrant testing to find small cracks or pinholes that are not visible to the eye.
For internal inspections, we use ultrasonic testing (UT) and radiographic testing (X-ray) to check for porosity, shrinkage, or inclusions deep within the metal. These tests allow us to see through the casting without damaging it. We also use coordinate measuring machines (CMM) to check that the dimensions of the part match your technical drawings exactly.
If an unfortunate event occurs, such as gas porosity, we apply repair welding followed by surface grinding and shot blasting to completely remove the porosity before any further post-casting processes like machining and surface treatment take place.
By combining these methods, we can confirm that the final product meets the high performance requirements of the oil and gas industry before it leaves our factory.
How do you manage dimensional accuracy for oil and gas castings with complex internal geometries?
We use investment casting to produce oil and gas castings with complex internal structures and high dimensional accuracy. By using specialized ceramic cores and soluble wax patterns, we create the intricate internal passages required for parts like flow control valve bodies, oil pump impellers, and sensor housings. These cores stay stable at high temperatures, which allows them to maintain their shape while the molten metal is poured.
After the metal solidifies, we remove the ceramic material to leave behind a clean internal structure. We use 3D casting simulation software to look at alloy shrinkage rates and adjust mold dimensions accordingly. Finally, we use borescope inspections and ultrasonic thickness gauges to check that internal walls and ports in components like downhole tool mandrels meet your exact technical specifications.
What are the benefits of using duplex and super duplex stainless steel for subsea castings?
Duplex and super duplex stainless steels provide high mechanical strength and corrosion resistance for subsea oil and gas due to their dual-phase microstructure. This structure allows the metal to withstand harsh subsea environments with high salt content and extreme pressure.
These alloys offer superior resistance to pitting and crevice corrosion while providing nearly twice the yield strength of standard 300-series stainless steels. The high strength allows for lighter castings that manage high internal and external pressures without cracking under stress.
We use these materials for subsea manifolds, valve bodies, connectors, and pump housings that require long-term durability and leak prevention. After casting, we use solution annealing and rapid water cooling to fix the austenite-ferrite balance. This step is necessary to achieve the full mechanical properties and corrosion resistance of the material.
