Why Choose Our Pipe Fitting Casting
- 27 years of experience in manufacturing pipe fitting castings
- Provide Non-Destructive Testing
- Use 304/316L to make pipe fitting castings
- 100% Hydrostatic & Air Testing Process
- Provide Spectrometer Analysis
- Excellent Surface Treatment
Pipe Fitting Casting Foundry in China
As a professional pipe-fitting investment casting foundry in China, we are committed to providing you with custom pipe-fitting castings made of 304/316L stainless steel that offer high precision, corrosion resistance, low-temperature resistance, and excellent tensile strength. Over the past 27 years, we have established long-term, stable partnerships with nine companies, achieving an annual output value of $8 million.
We have also helped numerous clients resolve pipe fitting casting-related issues. We will manufacture elbows and tees that weld seamlessly to your existing piping investment casting CNC machining, with dimensional tolerances as tight as ±0.1 mm. With our high-quality casting system and 100% airtightness testing, we provide pipe fitting castings that are free of porosity and cracks, capable of withstanding high pressure, and fully airtight.
Pipe Fitting Castings We Make
A large-diameter pipe elbow with a quick-connect flange at the top is used to change the direction of the fluid in a pipeline.
A small-diameter pipe elbow with a quick-connect fitting at one end, designed for connecting low-flow pipes.
Pipe fitting castings with flow-direction arrows strictly restrict the direction of fluid flow, enabling dynamic fluid control.
Why do you need pipe-fitting castings made from 304/316L?
The passivation film on the surface of stainless steel effectively prevents pipe fitting castings from rusting in chemical processing environments. The 316L grade is particularly effective at preventing pitting corrosion of castings in marine environments.
Low-carbon 316L stainless steel offers excellent weldability and does not cause intergranular corrosion at the welds of pipe fitting castings, which can lead to rusting, as seen with ordinary stainless steel.
Stainless steel possesses exceptional toughness and elongation. When pipe fitting castings are subjected to high-pressure fluid flow, the pipes undergo only minimal deformation, and the possibility of fracture is low.
Stainless steel retains its toughness even at extremely low temperatures, ensuring that pipe fitting castings do not suffer from low-temperature fracture when transporting liquefied natural gas or operating under cryogenic conditions.
Stainless steel can retain its high-temperature stability and oxidation resistance even at high temperatures of around 850°C, ensuring that pipe fitting castings do not deform when transporting high-temperature liquids.
Precision Geometric Control
In piping systems, even the slightest geometric deviation in pipe fitting casting can lead to catastrophic consequences. In particular, the precision of cast elbow and tee fitting castings is critical to the entire pipeline. In this situation, we use HEXAGON coordinate measuring machines to calculate the absolute spatial angles and coaxiality.
This not only effectively prevents internal concentrated stresses caused by forced welding due to dimensional inaccuracies, which can lead to pipeline explosions, but also ensures that below-standard products are accurately identified through strict wall thickness uniformity scans. We ensure that every pipe fitting casting provides you with a smoother and safer welding and usage experience.
Advanced Material Composition Control
The element content in stainless steel pipe fitting castings is important because it can determine whether the castings are weldable and corrosion-resistant. We provide spectrometers to accurately test whether the element content meets your standards, particularly the molybdenum content in 316L stainless steel, which is key to ensuring that the pipe fitting castings can withstand marine environments without suffering from pitting corrosion. Keep your piping system running safely and reliably for years to come.
Provide Excellent Surface Treatment
Surface treatment is key to determining whether pipe fitting castings can achieve a long service life in environments such as sanitary and marine applications. We can offer superior surface treatment processes for our pipe fitting castings, including pickling and passivation, which can form a film on the surface, thereby enhancing corrosion resistance. We also provide polishing to remove burrs and microscopic pits from the casting surface, which could increase the casting’s gloss and allow fluids to flow more smoothly through the pipe fitting castings.
Certified for the Toughest Conditions
Your Reliable Manufacturing Partner for Pipe Fitting Casting
With 27 years of precision investment casting experience, 18 years of machining experience, and 11 years of mold development experience, we have full casting capabilities in customizing the pipe fitting casting based on your specific designs, such as smooth bends in the inner lumen and irregularly shaped pipes.
Furthermore, as a one-stop foundry, we can provide you with consistent, high-quality pipe fitting castings. More importantly, our company is equipped with professional testing equipment, including a HEXAGON coordinate measuring machine. It ensures that your pipe fitting castings meet standard dimensional tolerances, allowing them to be seamlessly welded to your components.
Diverse Applications for High-Precision Pipe Fitting Castings
In the liquefied natural gas industry, ordinary carbon steel is prone to fracture due to low-temperature brittleness. In contrast, our pipe fitting castings made from 304 or 316L stainless steel retain exceptional toughness even at temperatures below -162°C and can withstand fluid impact. Furthermore, their low thermal conductivity effectively reduces cold air loss, slows down ice formation on the outside of the pipes, and protects the insulation from damage, making them the ideal choice for you.
In marine environments, ordinary carbon steel is prone to fracture due to chloride ion corrosion, whereas 316L stainless steel, used in our pipe fitting casting, due to its molybdenum content, strengthens the passivation film, rapidly repairs corrosion damage, and extends its service life.
Moreover, through investment casting and an excellent surface finish, our pipe fitting casting ensures that the interior of the pipes features smooth, large-radius transitions, allowing seawater to flow through unimpeded.
In the chemical industry, carbon steel or cast iron tends to react violently with acidic liquids, causing the pipe walls to thin and crack. In contrast, the 304 or 316L stainless steel used in our pipe fitting castings forms a highly inert passivation film on the surface, effectively isolating corrosive liquids; its nickel content further provides exceptional corrosion resistance and 100% airtightness in environments containing dilute sulfuric acid or high-temperature, significantly extending service life.
In the food and hygiene industries, ordinary metals react with acidic substances, releasing heavy metals easily. However, stainless steel is recognized as a sanitary-grade metal because its passivation layer does not react with the medium. Using the investment casting process, we produce pipe fitting castings with inner walls that are free of burrs and pits, thereby preventing bacterial growth. Furthermore, after solution annealing, the internal structure is stabilized, effectively preventing stress cracking.
Your Reliable Partner
A client at an LNG project in the United States had previously used carbon steel pipe fitting castings, which suffered brittle fracture at -162°C within a month. We switched to 316L stainless steel and optimized wall thickness uniformity, using CMM inspection to ensure that the angle deviation of the elbows was <<0.5°, thereby resolving the issue of stress concentration.
We encountered constant problems when connecting pipe fitting castings purchased from other factories to our piping systems before, which often required remolding and caused delays in our projects. However, Pingheng Machinery provided us with the perfect solution. Their pipe fitting castings, including elbows and tees, were manufactured with precise angles, allowing for a seamless connection to our piping systems and enabling our projects to proceed successfully. I believe we will be collaborating with them frequently in the future.
——David Vance, Project Operations Manager
In the past, when we purchased pipe fitting castings, we always had to coordinate with several manufacturers at the same time, but we could never find a machine shop capable of handling both mold making and CNC machining. Later, we found Pingheng Machinery. Their one-stop service saved us a lot of trouble; all we had to do was provide the drawings, and they took care of everything, from mold making and machining to even the subsequent surface treatment. We just had to sit back and wait for the finished products. It was so convenient!
——Thomas Albright, Global Sourcing Manager
Yes, we have 3D printing technology that allows us to provide pipe fitting casting samples quickly while minimizing your costs.
Before manufacturing pipe fitting castings from 316L stainless steel, we use a spectrometer to verify that the carbon content is below 0.03%. We also conduct tests again after the castings are completed to ensure that intergranular corrosion does not occur during welding.
We protect each pipe fitting casting individually by covering it with a custom-made plastic protective cover. The entire shipment is neatly stacked in Fumigation-Free Plywood Boxes and wrapped in waterproof stretch film to minimize the risk of rust.
We use a one-stop customization service, from mold design and fabrication to CNC machining. In this process, our pipe-fitting castings are typically delivered within 45 days.
