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Half repair sleeve
Half repair sleeves are ideal for maintenance repairs can be done without shutting down the entire line. Thru-put loss can be avoided by casing the existing lines with the help of half pipe sleeve.
Please send your inquiry by sales@sunnysteel.com
Description
Half Pipe Sleeve are ideal for maintenance as repairs can be done without shutting down the entire line. Thru-put loss can be avoided by casing the existing lines with the help of half pipe sleeve.
We manufacture half pipe sleeve of all sizes, wall thickness, and grades of steel plates which are to ASTM certifications as well as a longitudinal edge. Half-sole repair sleeves also called as spilt casting or half wrap are manufactured by customizing as per client’s specification.
Depending on the requirements of the customer, half pipe sleeve can be made from 4 available grades of steel. For instance, for leaking & non-leaking defects, pressure-rated steel sleeves are used whereas structural grade steel sleeves are used for reinforcement for a defective area.
Why pipe half repair sleeve?
The half pipe sleeve can be used for internal and external corrosion, gouges, dents, grooves, arc burns, cracks, defective girth welds, lamination and leaks. Pressure containing sleeves feature a wall thickness equal to or greater than required for the maximum allowable operating pressure or the full strength of the pipe being repaired. The half repair sleeve material is certified and the carbon equivalent will not exceed 0.45 percent. Each half-sole segment comes with one pre-crimped back-up strip. Half pipe sleeves can be used as pads or cradles for above ground piping, drain tile supports and patches (segments in 90° and 180° arcs, from 6-inches to 10 feet in length are available as specials). Each Half pipe sleeve has standard bevels with a back-up strip and material certifications. Sleeve ends are square cut.
Properties of half pipe sleeve
The half pipe sleeves can be used in case of leaks, dents, corrosion, cracks & faulty girth welds. Every repair sleeve are provided with standard bevels with a backup strip.
Materials used for half pipe sleeve
ASTM specifications are followed to manufacture half repair sleeves from superior quality carbon steel plates. Structural quality carbon steel or pressure vessel quality carbon steel is used according to the usage and requirement of the client in the below-mentioned grades:
- ASTM A36
- ASTM A572 GR 42, GR 50, GR55, GR60, GR65
- ASTM A516 GR 55, GR60, GR65, GR70
- ASTM A537 CL1,CL2,CL3
- API 5L GrB, X42, X46, X52, X56, X60, X65, X70,psl1, psl2
- EN10025-s235,s275,s355,s450
In addition to these, the sleeves can also be made in any custom grade as per the client usage.
- ASTM A283 GRADES: Grade A , Grade B , Grade C , Grade D
- ASTM A285 GRADES: Grade A , Grade B , Grade C
- ASTM A387 GRADES: Grade A , Grade B , Grade C , Grade D
- ASTM A514 GRADES: ASTM A514 GRADE A, ASTM A514 GRADE B, ASTM A514 GRADE E, ASTM A514 GRADE F, ASTM A514 GRADE H, ASTM A514 GRADE P, ASTM A514 GRADE Q, ASTM A514 GRADE S
- ASTM A515 GRADES: GRADE 60 [415] , GRADE 65 [450] , GRADE 70 [485]
- ASTM A516 GRADES: Grade 55 , Grade 60 , Grade 65 , Grade 70 [Grade 380 ], [Grade 415] , [Grade 450] , [Grade 485]
- ASTM A533 GRADES: ASTM A533, ASTM A533 TYPE A, ASTM A533 TYPE B, ASTM A533 TYPE C, ASTM A533 TYPE D, ASTM A533 TYPE E, ASTM A533 CLASS 1, ASTM A533 CLASS 2, ASTM A533 CLASS 3
- ASTM A537 GRADES: Class 1 , Class 2 , Class 3
- ASTM A573 GRADES: 58 [400], 65 [450], 70 [485]
- EN 10025 GRADES: S460, S500, S550, S620 and S690
- EN 10025 GRADES: grades S185, E295, E335 and E360
- EN 10025 GRADES: S275, S355 and S420 Grade: S460
- EN 10025 GRADES:S275, S355, S420 and S460
- EN 10025 GRADES:S275, S355, S420 and S460
- EN 10028 GRADES: P265GH (1.0425); P355NL2 (1.1106); P460NL2 (1.8918)
- API 5L GRADE B, X42, X46, X52, X56, X60, X65, X70, X80 PSL 1 & PSL2
Production of half pipe sleeve
Our half pipe sleeve are manufactured from the best quality carbon steel material. We pride ourselves on making the half sole by rolling, die forming and step braking and they never undergo heat treating. Thus making our expertise & technique best in the industry. If a client specifically asks for longitudinal edges of the half pipe sleeve to be beveled for welding, it can be done. Half pipe sleeves ends have shaved square edges to enable fillet welding, although square end bevel can also be made as per client specification. Our for repair sleeves are made with carbon steel plates with low carbon equivalency to ensure good weld ability.
Milling of half pipe sleeve for backing strips
Half Pipe Sleeve can be milled on the inside longitudinal edges for the backing strips. Depth of 1/16″ (.0625) -0″ + 1/32″ and width of 5/8″ (.625) -0 + 1/16″ on each side. Outside longitudinal edges are beveled 30° (+5° – 0° ) for welding.
Backing Strips
Backing strips are hot rolled commercial carbon steel sheet and strip of commercial quality, A-569/A1011 SS GR33 in coils and cut lengths having a maximum carbon of 0.15%. 1 1/4″ wide, 16 gauge (.0598) with a tolerance of: min. .0538 – max. 0658, 10′ long, pre-crimped (10 degree total bend).
Customization of half pipe sleeve
We can manufacture half pipe sleeve in any custom steel grades and of any size as per the application & requirement of the customer.
Inspection Of Half Pipe Sleeves
Every half sleeve is meticulously examined and inspected for defects before delivery. The shipment is thoroughly tested and verified for durability and stability.
Our quality experts first review the entire shipment of half pipe sleeves before we dispatch them to our clients. Parts that do not meet our strict standards are rejected and not shipped.
Mechanical properties and testing
Mill test reports will be furnished on all materials. Stock plate is not available with a maximum hardness guarantee. Independent testing may be performed to check the hardness on stock plate. Additional independent testing available to include: destructive, magnetic particle, liquid penetrate, ultrasonic and radiographic.
Dimensional requirements
Longitudinal edges are beveled to 30 degrees (+5 degrees -0 degrees), with a root face (land) of 1/16″ (+-1/32″). This will be a mechanical type bevel or by plasma torch burning. Beveled ends are available upon request. Inside diameter of each Half Pipe Sleeve is fabricated to match the outside diameter of standard nominal line pipe. Half Pipe Sleeve are manufactured so that when two halves of the sleeve are placed on the pipe, their total circumference shall equal the circumference of the pipe minus a gap between the longitudinal edges on either side of 1/16″ (-1/16″+1/32″) for welding.
Marking & shipping of half pipe sleeve
Every half sleeve pipe is marked for the size, thickness, dimension & grade of steel before shipping across India & abroad. Any half sleeve pipe not meeting the requirements for visual inspection or dimensional tolerance are rejected.
Applications and industries Served
- Half Repaire Sleeve Uses in Textile machinery
- Half Repaire Sleeve Uses in the Oil and gas industry
- Half Repaire Sleeve Uses in Medical Gas Pipeline Systems
- Half Repaire Sleeve Uses in the Pharmaceutical processing industry
- Half Repaire Sleeve Uses in Fluid piping.
- Half Repaire Sleeve Uses in Modern architecture.
- Half Repaire Sleeve Uses in Water waste projects
- Half Repaire Sleeve Uses in Refinery
- Half Repaire Sleeve Uses in Food
- Half Repaire Sleeve Uses in Sanitary Applications
- Half Repaire Sleeve Uses in Mining
- Half Repaire Sleeve Uses in Coatings
- Half Repaire Sleeve Uses in Adhesives and Sealants
- Half Repaire Sleeve Uses in Cosmetic
Material
Different types of stainless steel are selected according to the specific conditions of different working conditions. Common materials are: TP321 (Cr18Ni9Ti), TP309S (Cr23Ni13), 1Cr20Ni14Si2, TP310S (Cr25Ni20), 1Cr25Ni20Si2, and some low temperature areas (such as low temperature superheater, low temperature reheater) are made of 1Cr13, 1Cr6Si2Mo and other materials.
The boiler was originally designed to be accurate. Different materials have different temperature resistance and mechanical strength. 1Cr13, 1Cr6Si2Mo generally has a temperature resistance of 600 ℃ or less.
Main material of tube erosion shields
| Material（Grade） | Temperature resistance | Yield strength | Tensile strength | Elongation | HB | HRB | HV |
|---|---|---|---|---|---|---|---|
| 1Cr18Ni9Ti | 925 ℃ | ≥205MPa | ≥520MPa | ≥40% | ≤187 | ≤90 | ≤200 |
| Cr23Ni13 | 1095 ℃ | ≥205MPa | ≥520MPa | ≥40% | ≤187 | ≤90 | ≤200 |
| 1Cr20Ni14Si2 | 1095 ℃ | --- | ≥590MPa | ≥40% | --- | --- | --- |
| Cr25Ni20 | 1150 ℃ | ≥205MPa | ≥520MPa | ≥40% | ≤187 | ≤90 | ≤200 |
| 1Cr25Ni20Si2 | 1150 ℃ | --- | ≥540MPa | ≥35% | --- | --- | --- |
Advantages
Tube shields are custom made to fit perfectly to straight sections, curved sections and even finned and specialised tubing.
Boiler tube erosion shields, also known as anti-corrosion shields, anti-wear plate, anti-wear protection shields, anti-wear cover plate, anti-corrosion cover plate, boiler climbing pipe, anti-wear pressure plate, etc. , which are used in combination with snap rings.
Boiler tube erosion shields are produced using a high-pressure press and professional mould pressing. The production time is short, the welding performance is good, the welding should not fall off, the surface is smooth, and the appearance is beautiful. Boiler tube erosion shields with bends are formed by pressing on a press or bending with a special abrasive on a tube bender.
Boiler tube shields are designed to eliminate major maintenance and downtime costs from boiler and condenser tube failure.
Service life
The service life of boiler tube erosion shields is different in different types of boilers and different use parts. The normal service life is a period of overhaul (3-5 years) for the boiler. Generally, some boilers will be replaced or retrofitted every time the boiler is overhauled. The main replacements are those of the boiler tube erosion shields that are severely thinned and exceeded the standard; those that were not firmly detached during the boiler operation during the previous installation. According to the wear of the boiler tube erosion shields during replacement, if the thickness is severely reduced, it needs to be replaced, the deformation is severe, and those that cannot protect the tube also need to be replaced. In addition, some boiler tubes are not equipped with boiler tube erosion shields, but during the boiler inspection, it is found that the tubes have a tendency to wear and thinning. Generally, boiler tube erosion shields are also installed to prevent further wear of the tubes and cause serious consequences such as boiler explosions.
On the heating surface of superheated and the economizer tube bundle of the boiler, in order to prevent the pipe from being worn by high temperature flue gas washing, boiler tube erosion shields are mostly arranged on the outer side of the pipe in the direction of flue gas flow. The elbow erosion shields solves the abrasion problems of water wall tubes, superheater tubes, economizer tubes and reheater tubes in the furnace, and provides a guarantee for the long-term and reliable operation of CFB boiler. With the increase of CFB boiler products, the type and quantity of the elbow erosion shields will increase.
Application
Tube erosion shields are mainly used on the windward side of the heating surface of the boiler, such as superheaters, reheaters, economizers, and water-cooled wall pipes. The main role is to protect the heating surface of the boiler pipes, reduce pipeline wear, and increase the heating surface of the pipes.
Erosion shields are used to protect boiler tubing from the highly erosive effects of high temperatures and pressures thereby greatly extending tube life.
We offer shielding for tubing, covering straight, bent and finned sections, as well as the clips that hold these in place.
In the long term, these shields more than pay for themselves, preventing the costly replacement of tubing and avoiding the downtime that results from tube breakdown and leaks.
In general, most of them are called “wear-resistant tile” and “wear-resistant cover plate”. Erosion Shields are special boiler accessories.
Generally, most of them are used in power station boilers, small boilers are used less, and some coal chemical industries will also use them.
Inquiry
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FAQ
Q: How long is your delivery time?
A: The delivery time of customized products is generally 25 35 days, and non customized products are generally shipped within 24 hours after payment.
Q: Do you provide samples? Is it free?
A: If the value of the sample is low, we will provide it for free, but the freight needs to be paid by the customer. But for some high value samples, we need to charge a fee.
Q: What are your payment terms?
A: T/T 30% as the deposit,The balance payment is paid in full before shipment
Q: What is the packaging and transportation form?
A: Non steaming wooden box and iron frame packaging. Special packaging is available according to customer needs. The transportation is mainly by sea.
Q: What is your minimum order quantity?
A: There is no minimum order quantity requirement. Customized products are tailor made according to the drawings provided by the customer.
