INTERNAL SLEEVE

Reli Sleeve™ can be manufactured for OD & N.B. sizes starting from 2” to 72”.

• Girth Weld Safety-Detach 1-2 of the burn-back from the welding groove to secure the steel substratum.
• Environmental Accommodation-Technology for corrosive atmosphere suited to container.
• Enhance flow-Smooth top and tapered ends contribute to increased flow and decreased turbulence.
• Securely Anchor-The fitting is permanently fixed to the pipe as the recessed metal backing ring of the fitting is combined with the two ends of the pipe with Tabs or Pins during the welding process.
• Any chemical solvent and powder may be painted to paint.

Internal Sleeve are used for various industries & applications. Few of the them are mentioned below.

• Applicable to onshore, marine, industrial, and factory pipelines.
• Preserves the I.D. Coating from spattering of harmful weld during construction.
• Suitable for all types and grades of tubing in API 5L, ASME, ASTM material such as carbon steel and stainless steel.
• Installs no specially trained welder needed with standard welding procedure.
• Isolates the welded portion of the girth with a 100% I.D. Pipeline sealed.
• It is part of the finished pipeline after completion, offering permanent corrosion protection the same as the carrier tubing.
• Pipeline Refinery
• Pipeline desalination system
• Pipeline Jet Fuels
• Pipeline Fuel Injection
• Firewater Pipeline Safety
• Pipeline Refineries
• Petrochemical Pipelines
• Offshore Tunnel
• Onshore Pipeline
• Spool and Fittings

• API: American Petroleum Institute
• API 5L – Specification for Line Pipe
• API 1104/ANSI 1331.3 – The procedure and quality of radiography examination limits of acceptability, repair and removal of defects etc.
• ASTM: American Society for Testing Materials Iron and Steel
• ASME Section IX
• SSPC: Steel Structures Painting Council
• SSPC-V1S1 – Visual standard for Abrasive blast cleaned steel
• NACE MR0175 / ISO 15156 – Materials for use in H2S containing Environment in oil and gas production
• NACE SP 0188 – Discontinuity (Holiday) Testing of Protective Coatings
• NACE No. 1 / SSPC-SP5 – White Metal Blasting
• NACE TM 0186 – Holiday Detection of Internal Tubular Coatings of 10-30 Mils Dry Film Thickness
• NACE TM 0384 – Holiday Detection of Internal Tubular Coatings of Less Than 10 Mils Dry Film Thickness
• NACE: National Association of Corrosion Engineers.

Pipe / Plate

• API 5L PSL 1 & PSL 2 (Gr B to X80)
• ASTM A53 / ASTM A106 / ASTM A333
• ASTM A36 / ASTM A516 Gr 60, Gr 65, Gr 70
• ASTM A671 / ASTM A672 / ASTM A691
• ASTM A312 / ASTM A358

The internal sleeve are coated 100% internally & externally with liquid or powder coatings. Internal sleeve can be coated depending upon the material flowing through the pipeline. Some of the most common coatings used for pipeline coatings are:-

RECOMMENDED INSTALLATION PROCEDURE FOR INTERNAL SLEEVE

• The test condition of the pipe ends to ensure no injury. Wash the soil, dirt, any pollution impacting the project. The heat pipe stops at temperature 60-80 ° C to extract water or moisture if any is found.   Measure the inner diameter of the pipe at least horizontally and vertically, to be under tolerance.
• The coating on the internal sleeve of the pipe shall not cause harm, corrosion or any other negative defects. Ensure the sealing rings, heat-resistance tape, and other accessories are in good condition.
• Mix epoxy mastic according to mixing ratio and stick solely to epoxy pot life after mixing as a manufacturer ‘s advice.
• All welding activities must be downhill at 7 to 10 inches (175 to 250mm) per minute. A weep hole of 0.5” to 1”(12.7 to 25.4mm) shall be left to allow expanding gases to escape. When crossing the welding tab, a weaving motion of the electrode must be made to ensure complete melting.
• Do not start intermediate passes until the weld has cooled down to 120℃ or lower. The weep hole can be closed at the beginning of the first filler pass. Apply for as many passes as necessary to complete the weld and always keep downhill welding. Slags and other welding products shall be removed between passes.
• Push the sleeve into one end of the pipe before the pins touch bevel end of the shaft. The injection process shall be pushed horizontally uniformly by hand. Insert the next prepared pipe end to the correct sleeve with epoxy until the pins reach the bevel end of the pipe.
• For the welding procedures conform with standard API 1104 or SAE31.1 chapter 9. Using the lowest applicable holding machine heat configuration. The welded area needs to be well ventilated and secured from inclement weather. Pipe coatings and epoxy during the welding process can create dangerous fumes. Item MSDS is related during welding.
• If preheating is required, after applying epoxy mastic, heating from the external pipe may not exceed 120 ° C. Ground lead shall be mechanically attached to either end of the pipe but never to sleeve tabs and shall never be welded or fastened to the center of the pipe. An external pipe lock can be used to connect the ends securing for the purposes of welding tabs. Reli Sleeve avails it’s products all across India and various countries abroad as well.