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MSS SP 75 is the standard specification for high-test, wrought, butt-welding fittings used in high-pressure oil and gas transmission and distribution systems. It covers factory-made seamless and electric fusion-welded carbon and low-alloy steel butt-welding pipe fittings. These fittings are commonly used in various applications, including pipelines, compressor stations, metering and regulating stations, and mains.
Minimum yield strength is an important characteristic of these fittings, and MSS SP 75 categorizes them into seven classes based on their minimum yield strength. The classes are WPHY-42, WPHY-46, WPHY-52, WPHY-56, WPHY-60, WPHY-65, and WPHY-70. The "WP" abbreviation stands for "wrought pipe" or "wrought plate," while "HY" represents "high yield."
MSS SP 75 fittings are available in various types, including long-radius elbows, 3R elbows (short-radius elbows), straight tees, reducing tees, caps, and reducers. These fittings are commonly used in conjunction with API 5L pipes or ASTM A694 forged pipe flanges.
MSS SP-75 Buttweld End Cap Dimensions:
| MSS SP-75 Butt Weld End Cap Dimensions | |||
| NPS | Outside Diameter | E(End-to-End) | E1 |
| 16 | 16 | 7 | 8 |
| 18 | 18 | 8 | 9 |
| 20 | 20 | 9 | 10 |
| 22 | 22 | 10 | 11 |
| 24 | 24 | 10.5 | 12 |
| 26 | 26 | 10.5 | 12 |
| 28 | 28 | 10.5 | 12 |
| 30 | 30 | 10.5 | 12 |
| 32 | 32 | 10.5 | 12 |
| 34 | 34 | 10.5 | 12 |
| 36 | 36 | 10.5 | 12 |
| 38 | 38 | 12 | 13.5 |
| 40 | 40 | 12 | 13.5 |
| 42 | 42 | 12 | 13.5 |
| 44 | 44 | 13.5 | 15 |
| 46 | 46 | 13.5 | 15 |
| 48 | 48 | 13.5 | 15 |
| 50 | 50 | 14.5 | 16 |
| 52 | 52 | 14.5 | 16 |
| 54 | 54 | 16 | 17.5 |
| 56 | 56 | 16 | 17.5 |
| 58 | 58 | 16.5 | 18 |
| 60 | 60 | 16.5 | 18 |
Grades of MSS SP-75 WPHY Butt Weld End Cap:
MSS SP-75 specifies several grades, known as WPHY grades, for butt-welding fittings. These grades correspond to different minimum yield strengths and are used to categorize the fittings based on their mechanical properties. The WPHY grades specified in MSS SP-75 include:
WPHY-42: This grade has a minimum yield strength of 42,000 psi (290 MPa). It is commonly used in applications that require medium-strength fittings.
WPHY-46: This grade has a minimum yield strength of 46,000 psi (315 MPa). It offers slightly higher strength compared to WPHY-42 and is suitable for applications that require increased toughness.
WPHY-52: This grade has a minimum yield strength of 52,000 psi (360 MPa). It provides higher strength compared to the previous grades and is used in applications that require increased pressure and temperature resistance.
WPHY-56: This grade has a minimum yield strength of 56,000 psi (385 MPa). It offers further increased strength and is suitable for demanding applications that require higher pressure and temperature capabilities.
WPHY-60: This grade has a minimum yield strength of 60,000 psi (415 MPa). It provides even higher strength compared to the previous grades and is commonly used in applications with more demanding requirements.
WPHY-65: This grade has a minimum yield strength of 65,000 psi (450 MPa). It offers increased strength and toughness, making it suitable for high-pressure and high-temperature applications.
WPHY-70: This grade has a minimum yield strength of 70,000 psi (485 MPa). It provides the highest strength among the WPHY grades and is used in applications that require excellent mechanical properties and resistance to extreme conditions.
MSS SP-75 Butt Weld End Caps, as specified in the standard, are used in various applications within high-pressure oil and gas transmission and distribution systems. These end caps are designed to provide a secure and leak-tight seal to the ends of pipelines or other components, ensuring the integrity and safety of the system. Some common applications of MSS SP-75 Butt Weld End Caps include:
Pipeline Systems: Butt weld end caps are used to seal the ends of pipelines in oil and gas transmission systems. They provide protection against the ingress of contaminants and help maintain the structural integrity of the pipeline.
Compressor Stations: In compressor stations, butt weld end caps are used to seal the ends of pipes connected to compressors or other equipment. They help maintain the pressure and prevent any leakage or loss in the system.
Metering and Regulating Stations: Butt weld end caps are employed in metering and regulating stations to seal the ends of pipes connected to meters, regulators, or other instrumentation. This ensures accurate measurement and control of the flow of gas or oil.
Mains and Distribution Systems: Butt weld end caps are used in mains and distribution systems, where they seal the ends of pipes that supply gas or oil to various outlets or branches. They help maintain the system's integrity and prevent leaks at the end connections.
Maintenance and Repair: Butt weld end caps are also used during maintenance and repair activities in oil and gas transmission and distribution systems. They can be installed temporarily to seal off sections of the pipeline or components while maintenance or repair work is being carried out.
Our MSS SP-75 Buttweld End Cap products are carefully packaged to ensure safe delivery to our customers. Each end cap is individually wrapped in protective material and placed in a sturdy box for shipping. We also offer custom packaging options for bulk orders. We also offer tracking numbers for all orders, so you can keep track of your shipment. If there are any issues with the delivery, our customer service team is available to assist you. We take great care in packaging and shipping our Buttweld End Cap products to ensure they reach our customers in perfect condition.
