MIJ - MONOLITHIC INSULATION JOINT
PetroSan Oilfield Engineering Co. is the precise manufacturer and fabricator of monolithic insulation joints (MIJs), a welded prefabricated three-piece union used for pipeline electrical sectioning and frequently used when cathodic protection is present to prevent any interference with corrosion control.
We are one the prestigious fabricators and suppliers of API 5L insulation joint of monolithic (MIJ) for pipeline size 1 inch to 48 inch.
Pipelines with insulating joints are used to provide electrical isolation and stop corrosion. They offer cathodic protection systems current spreading. They offer electrical isolation between the pipeline segment and the nearby pipelines and structures. To reduce the chance of electrical bridging across the joint, the PetroSan Oilfield Engineering Co. insulating joint is designed to be installed above ground or in an inspection pit under dry conditions, if possible. The plan is to fuse the girth between two segments of the pipeline.
PeteoSan – MIJ Features and benefits :
- No integrity loss brought on by ground stress or thermal expansion, which is typical with flange isolation gasket kits.
- tested electrically and hydrostatically at the factory up to 1.5 times the operating pressure. There is also non-destructive testing offered.
- dependable, low-maintenance cathodic isolation of machinery in necessary isolation applications, such compressor stations.
- Unlike isolation gasket kits, which need a labor-intensive, complex installation process.
- Cathodic isolation that is dependable and worry-free, with no need for inspection pits, vaults, or maintenance — simply weld into place and directly bury.
- Epoxy coatings that are non-conductive aid in preventing internal and external shorts.
- Isolation stray currents that are imprinted on the pipe by external forces such earth currents, electrical transmission networks, and point-to-point currents.
- superior resistance to torsional strain and bending.
It functions as a thrust block or joint and is earthquake resistant.
While the pup length is determined to safeguard the joint’s mechanical and electrical integrity throughout the welding process, the construction directed toward the connecting pipes ensures a comparable overall strength and matches every internal dimension to permit the pig to pass through as smoothly as feasible.
ADVANTAGES - MIJ
- No maintenance is necessary.
- Dimensions: NPS 0.75 to 48.0 inches in diameter.
- ANSI Class 150, ANSI Class 300, and ANSI Class 600 are the available pressure classes.
- Fulfill or surpass all industry standards and guidelines.
- Gives pipelines carrying gas, water, and oil electrical isolation.
- Small size and low profile.
- Epoxy coating that is both internal and outwardly non-conductive.
- API 5L specifies pipe buttweld ends (ANSI B16.25 is available upon request).
- Complete hydrostatic and electrical testing was performed.
- Terminates stray current and removes shorts
Install either underneath or above. - Reasonably priced, and made in the India.
- Cost-effective: easy to install and requires no upkeep.
- Quick approval and shipment of the order.
- Factory assembly removes the need for flanges, bolting torque requirements, and pipe alignment problems.
Monolithic Insulating Joint Uses :
- pipelines for transmission and distribution.
- both aboveground and underground.
- Both completed and ongoing construction projects.
- At the front and rear of gas reduction facilities.
- Facilities for storing gas and crude oil below and above ground.
- installations and tanks for gaseous and liquid fuels.
Monolithic Insulating Joint - MIJ Property
|
Range |
|
| Size | 1 INCH to 48 INCH |
| Class | From ANSI 150, 300, 600, 1500 AND 2500 |
| Design Temp | |
| Normal Temp | -46°C to 95°C. |
| High Temp | Up to 250°C (On Customer request) |
| Pressure | |
| Design Pressure | As per ANSI B16.25 |
| Test Pressure | 1.5 times X Design Pressure |
| Standard Features | |
| Insulating Ring | ASTM D709 G10 TY IV |
| Seals | Nitrile / Viton |
| Coating | Epoxy Resin (Min 200µ) |
| Service | Sweet / Sour |
| Location | Onshore / Offshore |
| Suitable | Below / Above Ground |
| Metallic Parts | |
| Rings | ASTM A105, ASTM A694, F42, F46, F52, F56, F60, F65, F70. |
| Pup Pieces | Pup Pieces |
| Electrical Features | |
| Di – Electric Strength | 5 KV 50 Hz AC for 1 Min |
| Insulation Resistance | Min 1 Mega Ohm @ 1000V DC |
Physical Property :
- Monolithic Insulating Joint bodies are welded constructions constructed of thick metal sheets (carbon or low alloy structural steel).
- Results of measurements and tests are published in the documentation that comes with our goods.
Electrical properties :
- The use of high-class insulating materials ensures quality.
- The use of interchangeable spark gaps
- No sparking or breakdown during the electrical test with an alternating voltage of 5 kV (50 Hz) for 1 minute (test done before and after hydrostatic test).
- The resistance of monolithic insulating joints exceeds 1GΩ at 1kV in dry state.
- There was no breakdown at a voltage of 15 ÷ 25 kV (depending on requirements) during holiday testing for external insulation coating.
MIJ – Material Grades :
- Pipe use for welding according to
PN-EN ISO 3183, PN-EN 10028, DIN 1626, API Spec 5L, ASTM A53 and other. - Steel elements (rings) made of sheet metal, metallurgical rings and forgings according to PN-EN 10028.
- Insilating materials are laminated epoxy boards according to PN-EN 60893 and DIN 7735.
MIJ Non-destructive test :
- The steel elements of the Monolithic Insulating Joints are joined together by MAG welding in accordance with approved procedures by an independent certification body.
- The welds are examined using non-destructive methods: VT (visual testing), PT (penetrant testing) and UT (ultrasonic testing) by 2nd level specialists holding competence certificates issued by the Welding Institute.
MIJ – exterior coatings :
- Polyurethane coatings according to EN 10290,
- Heat–shrinkable coatings acc. to PN-EN 12068, “CANUSA” “REIHEM”.
- Paint coatings (epoxy) acc. to PN-EN 12944.
- Paint coatings (epoxy) acc. to PN-EN 12944, PN-EN 10301.
Manufacturer and fabricators of PetroSan – MIJ – Monolithic insulation joint :
Manufacturer of API 5L Class 150 MIJ, Manufacturer of API 5L Class 300 MIJ, Manufacturer of API 5L Class 600 MIJ, Manufacturer of API 5L Class 900 MIJ, Manufacturer of API 5L Class 1500 MIJ, Manufacturer of API 5L Class 2500 MIJ, Manufacturer of high pressure Monolithic insulation joint, Manufacturer of API carbon steel Monolithic insulation joint, Manufacturer of API 5L X52 PSL1 Monolithic insulation joint, Manufacturer of API 5L X56 PSL1 Monolithic insulation joint, Manufacturer of API 5L X60 PSL1 Monolithic insulation joint ,Manufacturer of API 5L X65 PSL1 Monolithic insulation joint, Manufacturer of API 5L X70 PSL1 Monolithic insulation joint, Manufacturer of API 5L X52 PSL2 Monolithic insulation joint, Manufacturer of API 5L X56 PSL2 Monolithic insulation joint, Manufacturer of API 5L X60 PSL2 Monolithic insulation joint, Manufacturer of API 5L X65 PSL2 Monolithic insulation joint, Manufacturer of API 5L X70 PSL2 Monolithic insulation joint, Manufacturer of NACE MIJ.
We Manufacture, Export and supply to many Countries as follows :
- ASIA – India, Japan, Thailand, Singapore, Sri lanka, Bangladesh, South Korea, Indonesia, Philippines, Vietnam, Kazakhstan, Azerbaijan, Turkmenistan.
- Middle East – Kuwait, Dubai, Saudi Arabia, Qatar, Oman, Bahrain, Jordan, Turkey, Iraq, Yemen, Syria, Azerbaijan, United Arab Emirates, Israel.
- Western Europe – Germany, France, Netherlands, Belgium, Austria, Switzerland, Luxembourg, Monaco, Liechtenstein
- Eastern Europe – Russia, Ukraine, Poland, Romania, Czechia, Hungary,Belarus, Bulgaria, Slovakia, Moldova
- Northern Europe – United Kingdom, Sweden, Denmark, Finland, Norway, Ireland, Lithuania, Latvia, Estonia, Iceland, Isle of Man, Faeroe Islands
- Southern Europe – Italy, Spain, Greece, Portugal, Serbia, Croatia, Bosnia and Herzegovina, Albania, North Macedonia, Slovenia, Montenegro, Malta, Andorra, Gibraltar, San Marino, Holy See
- South America – Argentina, Chile, Brazil, Colombia, Paraguay
- Western Africa – Nigeria, Ghana, Côte dIvoire, Niger,Burkina Faso, Mali, Senegal, Guinea, Benin, Togo, Sierra Leone, Liberia, Mauritania, Gambia, Guinea-Bissau, Cabo Verde, Saint Helena
- Northern Africa – Egypt, Sudan, Algeria, Morocco, Tunisia, Libya, Western Sahara
- Southern Africa – South Africa, Namibia, Botswana,Lesotho, Swaziland
- Eastern Africa – Ethiopia, Tanzania, Kenya, Uganda,Mozambique, Madagascar, Malawi, Zambia, Zimbabwe, South Sudan, Rwanda, Burundi, Somalia, Eritrea, Mauritius, Djibouti, Réunion, Comoros, Mayotte, Seychelles