Why OMSS's SCH 10 Pipe Fittings?
- Focusing on sanitary fluid equipment for more than 15 years, our core team is in charge of the whole process from product design to process control.
- Processed by Japanese Mazak CNC equipment, together with 20 CNC lathes for precision molding.
- Helium leak testing is a standard factory process where welds and seals are individually inspected to ensure they are in good condition.
- Passed ISO 9001, CE, 3A certifications, MTRs material report is provided with the shipment
- Supports OEM customization, verified by more than 300 global customers, SCH 10 Pipe Fittings are exported to 20+ countries.
Your Trusted Source for Sanitary SCH 10 Pipe Fittings
The most important risks to control when selecting fittings are: cleanliness, stability of supply, and manageability of maintenance costs. OMSS’ Sanitary SCH 10 Pipe Fittings are designed around these needs. It is mainly used in CIP/SIP in-situ cleaning systems. Due to its thin wall, it reduces the weight of the system while meeting the strength requirements, and is easy to install and weld. At the same time, the inner surface is treated according to sanitary standards, which reduces fluid resistance and minimizes residues. As a result, SCH 10 has become a regular feature in clean piping projects for food, dairy, pharmaceutical and semiconductor applications.
In addition, OMSS offers complete documentation of certification and traceable inspection records. Each purchase is supported by the corresponding documentation, which facilitates internal audits and allows for successful third-party factory inspections.
With over 2,000 sizes in constant stock, OMSS has a low risk of stock-outs. If your project has special dimensions or non-standard working conditions, our OEM customization capability can also provide you with appropriate solutions.
OMSS's SCH 10 Pipe Fittings Series
Wide angle turn, suitable for installations where space is limited and sharp turns are required
Small angle slow turn, reduce fluid resistance, reduce turbulence and pressure drop losses
Different calibers of mains and branches, reduces the diameter of the fittings in one go.
Coaxial reducers keep the centerline of the pipe consistent, suitable for horizontal pipe sections.
The flush bottom design prevents liquid buildup and is the standard choice for sanitary line draining.
Used for blocking pipe ends and are often used for pressure testing or for reserving connections in systems.
Used with loose fitting flanges for easy dismantling and maintenance of the pipe without having to replace the entire pipe section.
Four-way cross connections for complex pipe layouts with multiple manifolds.
180° return design, often used in compact piping systems such as heat exchangers or cleaning circuits.
Features of Sanitary SCH 10 Pipe Fittings
The entire series is precision molded in 304, 304L, 316L stainless steel, conforms to 3A, ASME BPE sanitary standards, and is designed for clean piping systems in food, dairy, pharmaceutical, and semiconductor industries.
SCH 10 thin wall design can reduce the weight of the piping, make installation and support easier, especially suitable for clean room piping needs.
The inner wall surface roughness Ra≤0.8μm, very little fluid residue, CIP cleaning can be completed thoroughly, effectively avoiding microbial growth.
Offers a complete line of products, including 45°/90° elbows, tees, fittings, caps, stub ends, etc., allowing users to choose one supplier for their entire piping system.
Pipe fittings are machined by Mazak CNC machines in Japan, with stable dimensional tolerances and high precision weld ports, so that there is no deviation in the matching of interfaces during on-site assembly.
Every product is helium vacuum leak tested instead of sampling to ensure reliable sealing performance before delivery.
ISO 9001, CE, and 3A certified, and ships with MTR material reports to meet the compliance purchasing requirements of the pharmaceutical and food industries.
Support non-standard size and special surface treatment customization, provide drawing confirmation and sample proofing service, can meet the needs of special working conditions.
Helium Leak Detected Sanitary SCH 10 Pipe Fittings Ensure Zero Leakage
The pharmaceutical, semiconductor, and dairy industries have very stringent requirements for line sealing, and in the case of leaks, the cost of dealing with them is often much higher than the fittings themselves. OMSS’s SCH 10 sanitary pipe fittings are helium vacuum tested before they leave the factory. Helium molecules are extremely small and have a much higher penetrating power than ordinary gases, allowing us to detect tiny leaks that are difficult to capture with conventional inspection methods. The results of our leak testing are documented for each piece of fitting, so you can install it as soon as you receive it, without the need for secondary testing.
Full line of SCH 10 fittings in stock for continuous project delivery
OMSS’ SCH 10 line of stock fittings covers the full range of fittings, including 45° elbows, 90° elbows, equal tees, reducers, concentric/eccentric fittings, caps, stub ends, u-bends, and crosses in sizes ranging from 1/2″ to 8″, with more than 2,000 items in stock. You can assemble a complete line of fittings at one time, eliminating the need to split orders with multiple suppliers. For EPC contractors or equipment integrators with tight deadlines, a steady supply is essential to keeping projects on schedule.
Precision Manufacturing, Complying with Sanitary Standards Right from the Factory
The SCH 10 Pipe Fittings used in the sanitary piping system require higher machining accuracy than normal wall fittings. OMSS SCH 10 Pipe Fittings are machined using Mazak CNC equipment from Japan, which ensures stable dimensional tolerances and high consistency in the roundness and flatness of the weld ports. The inner wall is precision treated with a surface roughness of Ra≤0.8μm, which meets the sanitary standards of 3A and ASME BPE right from the factory.
The OMSS factory is ISO 9001 certified, and with complete inspection records and MTR material reports for each product, you can file acceptance and compliance documents directly without additional handling.
Applications of SCH 10 Pipe Fittings
A number of industries have stringent hygienic and material requirements for pipe fittings. SCH 10 sanitary pipe fittings meet these requirements, have a smooth inner wall and are supplied with full certification documentation. This makes system design and factory inspections much smoother. SCH 10 Pipe Fittings are mainly used in the following industries.
Dairy processing requires higher standards of hygiene and temperature control than normal food products. Pasteurization, homogenization and filling lines are subjected to multiple SIPs while keeping the media free from wall contamination. 304, 304L, 316L stainless steel is a low carbon, stable material that is not prone to the release of contaminants. 3A sanitary fittings from OMSS are the approved specification for plant inspections and compliance purchasing in the dairy industry.
Piping in the pharmaceutical industry can contaminate drugs if it is not clean or made of the right materials. Regulatory agencies have specific requirements for piping materials, surface finishes, and weld quality, and OMSS SCH 10 fittings meet ASME BPE standards. Each fitting is helium vacuum leak tested and shipped with MTRs.
The ultrapure water, specialty gases, and chemicals used in semiconductor processes require very high levels of line cleanliness. OMSS has been using SCH 10 Pipe Fittings in semiconductors since 2023. Our SCH 10 Pipe Fittings are electrolytically polished, which reduces the risk of particles adhering to the inner wall. Welds are leak tested with helium to ensure that there are no tiny leaks.
- Certificate of Compliance
Customer Reviews
OMSS supported our custom stainless steel fitting project from drawing confirmation to final production. Their engineers provided useful suggestions on material selection and processing details. The finished components matched our requirements well and performed reliably in our food equipment applications.
JohnWe have strict requirements for surface finish and hygiene standards in pharmaceutical equipment. OMSS stainless steel fittings showed excellent workmanship, with smooth surfaces and precise machining. Their products helped us meet our equipment assembly requirements and maintain reliable production performance.
MichaelOMSS has become one of our trusted stainless steel component suppliers. We appreciate their fast communication, clear order updates, and careful packaging. Even for customized parts with different specifications, they maintain good consistency between samples and mass production.
Sarah
OMSS SCH 10 pipe fittings are manufactured in accordance with ASTM A403, ASTM A960, and MSS SP-43, and are sized in accordance with ASME B16.9. Sanitary products meet both 3A and ASME BPE requirements. In addition, OMSS is ISO 9001 quality management system certified and has EU CE marking.
SCH 10 Pipe Fittings are thin-walled and require welders with experience in thin-walled pipe welding because of the low heat capacity and high heating speed. Typically, TIG welding is used with low heat input to prevent weld penetration, and the weld ports on OMSS fittings are CNC-machined for consistent roundness and flatness, eliminating the need for secondary trimming during field butt jointing.
The larger the wall thickness, the larger the heat-affected zone during welding, and the more difficult it is to achieve a high finish on the inside. SCH 10 thin-walled fittings are easier to mold to meet sanitary standards on the inside, and the subsequent processing is simpler. In addition, the working pressure of sanitary piping systems is usually low, and the pressure carrying capacity of SCH 10 is sufficient to meet the requirements.
Sanitary SCH 10 Pipe Fittings are made of 316L stainless steel with a precision polished inner wall and a surface roughness of Ra ≤ 0.8 μm in accordance with sanitary standards of 3A or ASME BPE and are supplied from the factory with MTRs.
General industrial grade SCH 10 is typically made of 304 stainless steel or carbon steel, with no internal wall finish required and no sanitary certification, so it is not suitable for food, pharmaceutical, or semiconductor scenarios where purity of the media is required.
The easiest and most reliable way to differentiate between sanitary and industrial grade SCH 10 is to ask for 3A or ASME BPE declarations of conformity and MTRs directly from the supplier at the time of purchase.
Sanitary Pipe Fittings Selection Guide: SCH 10 vs SCH 5
Wall Thickness Differences
The Schedule number of a fitting indicates the thickness of the wall, the larger the number, the thicker the wall. For example, for a common 1.5″ pipe diameter, SCH 5 has a wall thickness of approximately 0.065″ (1.65mm) and SCH 10 has a wall thickness of approximately 0.109″ (2.77mm). SCH 10 has a thicker wall than SCH 5, so SCH 10 is able to withstand higher internal pressures for the same pipe diameter.
SCH 10 Positioning in Sanitary Systems
Sanitary fittings are used primarily in the food, beverage, dairy, pharmaceutical and biotechnology industries. These industries have clear requirements for the cleanliness, corrosion resistance and internal surface finish of the fittings, as the media need to be kept clean and the systems need to be easy to clean and sterilize repeatedly.
SCH 10 is the wall thickness commonly used in these systems. It is commonly used because it strikes a relatively reasonable balance between strength and weight. The wall thickness is sufficient to ensure structural strength without significantly burdening the system.
SCH 10 is rated for higher working pressures than SCH 5. During SIP (steam sterilization) and CIP (in-line cleaning), the system undergoes repeated temperature and pressure changes. The larger wall thickness of SCH 10 is less prone to deformation under these thermal cycling conditions and is therefore more structurally stable for process piping in long-term operation.
In addition, the thicker walls of SCH 10 tubes leave the welder more room for adjustment during welding. Both orbital automatic welding and manual TIG welding are less prone to burn-through and rely relatively little on operating experience. This has a direct impact on the pass rate and rework costs in the field.
When SCH 5 Pipe Fitting is More Suitable
The main advantages of SCH 5 are its low weight and low material costs. In systems with low working pressures (typically less than 50 PSI), low temperature variations, and large pipe diameters (over 2 inches), SCH 5 often meets the strength requirements while reducing overall weight. The reduced weight also reduces the requirements for brackets and support structures.
SCH 5 is a common choice in large-diameter, low-pressure delivery scenarios such as gravity flow discharge piping, low-pressure vent piping, or portions of tank connection lines. Such systems are not inherently subject to significant pressure fluctuations and do not require high wall thicknesses.
However, if the system involves pumping, back-pressure control or pulsating flow, continuous or transient pressure changes can occur inside the piping. In such cases, SCH 10 should be given priority to ensure a margin of structural safety.
Materials and Finishes
Sanitary SCH 10 Pipe fittings are typically made of 304 or 316L stainless steel. 316L, because of its higher molybdenum content, exhibits better corrosion resistance in chlorinated environments or in pharmaceutical processes. For this reason, 316L is preferred in systems that are sensitive to corrosion or where higher standards of cleanliness are required.
Regardless of the material used, the internal surfaces of sanitary fittings need to meet a certain standard of finish. Common requirements are Ra ≤ 0.8 μm; in high-cleanliness applications, even Ra ≤ 0.4 μm. The smoother the surface, the less likely it is to retain media and the better it is for cleaning verification.
Due to the larger wall thickness of SCH 10, there is more material margin for electrolytic or mechanical polishing. Dimensional changes after polishing are more controllable and surface consistency is easier to maintain. For systems requiring FDA, 3-A, or EHEDG approvals, this dimensional stability can be advantageous in documentation verification.
Selection Advice
If a system is designed for pressures in excess of 150 PSI, or if it includes a steam sterilization process, SCH 10 is often the more prudent choice. The thicker wall thickness provides a higher margin of safety.
If the system is at atmospheric or low pressure and you want to reduce material costs or overall weight, re-evaluate SCH 5 for pressure and temperature requirements.
Both fitting Tri-Clamps have the same outside diameter and can therefore be used in the same system in terms of physical connection. However, if mixed, the specification with the lower pressure capacity should be used as the upper limit of the system’s pressure rating to avoid lowering the overall safety rating due to localized thin walls.
