MSS SP-44 Flanges – ANSI-Standard Steel Pipe Flanges
The MSS SP-44 flange is a high-integrity steel pipe flange standard developed by the Manufacturers Standardization Society. Designed specifically for steel pipeline systems, it supports full ANSI B16.5 and B16.47 compatibility in pressure classes up to 900. Most commonly available as weld neck and blind types, these flanges are ideal for high-pressure applications involving oil, gas, petrochemical, and power generation sectors. Werner Flanges Inc. offers MSS SP-44 flanges manufactured with precision and strict adherence to global quality norms.
MSS SP-44 flanges are widely used in high-pressure and high-temperature environments such as pipeline manifolds, offshore platforms, refineries, chemical plants, and large-scale industrial piping. Their robust construction and ability to handle pressure surges make them the go-to solution in demanding infrastructure projects requiring enhanced mechanical strength and leak resistance.
Werner Flanges Inc. supplies MSS SP-44 flanges in sizes ranging from 1/2″ to 60″, available in weld neck (WN), blind (BL), and ring-type joint (RTJ) configurations. Customers can choose from raised face (RF) or flat face (FF) flanges based on project specifications. We also provide full MTC certification, third-party inspection support, and expedited delivery across domestic and international locations.
As a trusted global supplier and manufacturer of MSS SP-44 flanges, Werner Flanges Inc. has developed a strong reputation for quality, reliability, and customer-focused service. We maintain ready inventory for standard sizes while offering tailored manufacturing for special grades or dimensions. Our clients include EPC contractors, OEMs, and process equipment manufacturers worldwide.
MSS SP-44 Flanges – ANSI-Standard Steel Pipe Flanges Technical Specifications
| Specification | Details |
|---|---|
| Standard | MSS SP-44 |
| Flange Types | Weld Neck (WN), Blind (BL), RTJ |
| Pressure Ratings | 150, 300, 600, 900 |
| Size Range | 1/2” to 60” |
| Facing Types | Raised Face (RF), Flat Face (FF), RTJ |
| Manufacturing Process | Forged / Machined |
| Testing & Certification | EN 10204 3.1 / 3.2, PMI Testing, Hydrostatic Testing, Third-Party Inspection |
Material Specifications for MSS SP-44 Flanges – ANSI-Standard Steel Pipe Flanges
| Type of Materials | Common Specifications / Customization Available on Request |
|---|---|
| Duplex Steel | ASTM/ASME A182 F51, F60, F61, UNS S31803, UNS S32205 |
| Super Duplex Steel | ASTM/ASME A182 F53, F55, UNS S32750, UNS S32760, F44 (6Mo) |
| Stainless Steel | ASTM/ASME A182 F304, F304L, F316, F316L, F310, F317L, F321, F347 |
| Carbon Steel | ASTM A105, A350 LF1, LF2, LF3, A266 Class 1/2, A694 F42 to F70, A765 Gr. II |
| Alloy Steel | ASTM/ASME A182 F1, F5, F9, F11, F12, F22 |
| Non-Ferrous Alloys | Titanium, Brass, Admiralty Brass, Copper Nickel, Nickel Alloys, Hastelloy |
| Titanium | ASTM/ASME B381 Gr.1, Gr.2, Gr.5, Gr.7, Gr.12, Gr.16 |
| Copper Nickel | ASTM B151 UNS C70600 (Cu-Ni 90/10), C71500 (Cu-Ni 70/30) |
| Brass, Al-Brass | ASTM B152 UNS C26000, C27200, C28000; ASTM B111 for Al-Brass |
| Nickel Alloys | ASTM B160, B161, B564 – UNS N02200, N02201, N04400, N08800, N08825, N06600, N06601, N06625, Monel K500 |
| Alloy 20 | ASTM B462 UNS N08020 |
| Hastelloy | ASTM B564 UNS N10276 (Hastelloy C276), N06022 (Hastelloy C22) |
| Cladded Materials | ASTM B898, B265, B424 or custom explosion/clad bonding using dissimilar metals |
| Titanium-Steel, Nickel-Steel, Titanium-Copper, Stainless Steel-Carbon Steel, Bimetallic/Trimetallic Combinations |
Types of MSS SP-44 Flanges – ANSI-Standard Steel Pipe Flanges
- MSS SP-44 Weld Neck Flange
- MSS SP-44 Blind Flange
- ANSI MSS SP-44 Flange
- MSS SP44 RTJ Flange
- A694 MSS SP-44 Flange
- MSS SP-44 Pipe Flange
- High-Pressure MSS SP44 Flange
Industries and Applications of MSS SP-44 Flanges – ANSI-Standard Steel Pipe Flanges
| Industry | Application |
|---|---|
| Oil & Gas Industry | Used extensively in upstream, midstream, and downstream operations for high-pressure piping and processing systems requiring robust sealing solutions. |
| Petrochemical & Chemical Processing | Ideal for handling corrosive chemicals and high-temperature pipelines in refining and chemical manufacturing processes. |
| Power Generation | Installed in thermal, nuclear, and hydroelectric power plants for critical pressure applications and steam systems. |
| Water Treatment & Desalination | Used in high-pressure water distribution, desalination, and wastewater treatment pipelines ensuring durability and leak resistance. |
| Marine & Offshore Industry | Suitable for seawater piping systems, ballast systems, and pressure vessels in marine engineering and offshore platforms. |
| Pharmaceutical Industry | Ensures sanitary, high-pressure fluid handling in sterile environments and cleanroom process systems. |
| Food & Beverage Industry | Used in hygienic and high-pressure processing lines where corrosion resistance and strength are critical. |
| Mining & Mineral Processing | Supports slurry transport systems and ore processing pipelines in mining operations. |
Frequently Asked Questions (FAQs) about MSS SP-44 Flanges – ANSI-Standard Steel Pipe Flanges
1. What is the MSS SP-44 standard?
MSS SP-44 defines the dimensions, pressure ratings, and materials for steel pipeline flanges primarily used in ANSI and API piping systems.
2. Which flange types are included under MSS SP-44?
The standard includes weld neck (WN), blind (BL), and ring-type joint (RTJ) flanges.
3. Are MSS SP-44 flanges interchangeable with ASME B16.47 flanges?
Yes, MSS SP-44 flanges are compatible with ASME B16.47 Series A flanges in terms of bolt patterns and pressure ratings.
4. What is the maximum pressure rating of MSS SP-44 flanges?
These flanges are available in pressure classes up to 900 depending on size and material.
5. Which industries commonly use MSS SP-44 flanges?
They are commonly used in oil & gas, petrochemical, power generation, water treatment, and offshore drilling.
6. Do MSS SP-44 flanges come with certification?
Yes, Werner Flanges Inc. provides MTC EN 10204 3.1 or 3.2 and other third-party inspection certificates upon request.
7. Can you supply MSS SP-44 flanges in special alloys or coatings?
Absolutely. We offer custom solutions in stainless steel, duplex, and coated carbon steels per project requirements.
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