Custom half sole repair pipe sleeves with pressure vessel certified steel, beveled welding edges & matching backing strips, support online non-shutdown repair for thermal power boiler, petrochemical and long-distance transmission pipelines.
A full scope of sizes, ASTM grades of steel plate (structural and pressure vessel quality), wall thickness and longitudinal edge options are available.
Half repair pipe sleeves are designed to avoid a costly shut down. Existing lines can be cased without thru-put loss, because it is not necessary to shut down the carrier line to perform the required repair. A full scope of sizes, ASTM grades of steel plate (structural and pressure vessel quality), wall thickness and longitudinal edge options are available.
Half sole repair sleeves, also called split casing or half wrap, are custom-fabricated to your specifications, to assure a precision product and secure fit. There are four types of material available, two pressure-rated steels and two structural-grade steel. The pressure-rated steel sleeves can be used to repair leaking and non-leaking defects while the structural-grade steel sleeves can function as reinforcement for a defective area.
Half Repair Pipe Sleeves are used to repair and reinforce damaged sections of pipelines without the need for a complete pipeline shutdown. They are designed to be installed over the affected area of the pipe, providing structural support and preventing further damage.
Our Half Repair Pipe Sleeves adopt optimized split half sole semi-circular forming design, combined with 7 core competitive advantages covering material, installation, sealing, service life and cost control, and we provide two mature structural types for different pipe damage scenarios:
User-centric structural design enables simple, rapid installation without specialized professional tools or long system shutdown periods. Just wrap the split half repair sleeve over the damaged pipe segment and fix the position via welding or clamp locking as required, greatly shortening maintenance downtime.
Compatible with multiple base pipe materials: carbon steel, copper, PVC and alloy heat exchange tubes. Widely applicable to domestic plumbing systems, industrial process pipelines, municipal water supply networks and buried underground utility piping.
Precision die forming creates a snug full contact fit with the pipe outer wall. After full welding construction, the sleeve forms a stable leak-free sealing layer to stop medium leakage and avoid secondary pipe damage and safety hazards.
Engineered to endure severe operating environments, the sleeves resist extreme temperature cycling, chemical medium erosion and external physical impact stress, offering a permanent long-term repair solution for damaged pipelines.
Eliminate high-cost full pipe cutting and whole-section replacement construction work. Half repair pipe sleeves drastically reduce raw material waste, labor cost and production shutdown losses for pipeline renovation projects.
Full range of customizable outer diameters, wall thicknesses and single repair lengths covers nearly all mainstream industrial and plumbing pipe specifications, matching any customer on-site pipe dimension requirements.
Split half sole structure without end circumferential fillet weld, only longitudinal side seam welding for local structural reinforcement. Cannot contain internal medium pressure, suitable for non-through-wall defects: uniform wall thinning, surface pitting, minor dent and non-leaking fatigue crack, used for boiler tube pre-leakage anti-abrasion strengthening.
Full sealing structural design with side grooves for backing strip installation, longitudinal side seam + two-end circumferential full fillet welded to form complete pressure-bearing enclosure. Can fully bear pipeline design operating pressure, applied for through-wall crack, weld leakage, perforated thinning and severe pipeline damage, permanent leak-free repair for high-pressure boiler and gas pipelines.
Common materials for half repair pipe sleeves include:
Half Repair Pipe Sleeves are used in various industries such as oil and gas, petrochemical, water treatment, and wastewater management. They are ideal for repairing pipelines in critical infrastructure without causing significant disruptions to service.
The installation process typically involves cleaning the damaged pipe area, positioning the sleeve over the damaged section, and welding it in place. The sleeves are designed with beveled edges for easy welding and a secure fit.
Regular inspection and maintenance are recommended to ensure the continued effectiveness of the repair sleeve. This includes checking for signs of wear, corrosion, or leakage around the sleeve.
Half Repair Pipe Sleeves offer a reliable and cost-effective solution for repairing damaged pipelines. They are customizable, durable, and can be installed with minimal service disruptions, making them an essential tool for pipeline maintenance and repair.
The half repair sleeve is a versatile component used in pipeline maintenance and repair to reinforce damaged sections and ensure the integrity of the pipeline.
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.
The steel repair sleeves can be used for internal and external corrosion, gouges, dents, grooves, arc burns, cracks, defective girth welds, laminations 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 steel 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.
Steel Repair 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 Steel Repair Sleeve has standard bevels with a back-up strip and material certifications. Sleeve ends are square cut. Back-up strip are not included with Standard Girth Weld Steel Repair Sleeves but are available as special order.
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.
Material used are structural quality carbon steel or pressure vessel quality carbon steel plates, which are to ASTM specifications, and in the following grades:
The chemical composition does not exceed the percentages specified for the ASTM material ordered. Repair sleeves are fabricated from plate with low carbon equivalency for good weld ability.
The maximum allowable carbon equivalency (CE) quality carbon steel plates will be based on the heat analysis.
The maximum allowable carbon equivalency (CE) pressure vessel quality carbon steel plates will be based on the heat analysis, in most cases.
Note: The sleeve can be manufactured in any grade as per the application & client requirements.
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.
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).
All of our sleeves are manufactured from quality, carbon steel material, all of which are up to ASTM/ASME specifications. We keep copies of material test reports on file and verify heat numbers prior to producing all parts.
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.
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.
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.
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.
Half pipe sleeves are designed to avoid costly shutdowns. Existing lines can be cased with no loss of throughput, as there is no need to shut down the carrier line to make the required repair.
Generally, boiler tubes erosion shields are also installed to prevent further wear of the tubes and cause serious consequences such as boiler explosion.
The main role is to protect the heating surface of the boiler pipes, reduce pipeline wear, and increase the heating surface of the pipes.
Ceramic lined pipe is made through self-propagating high-temperature synthesis (SHS) technique.
Cast basalt lined steel pipe is composed by lined with cast basalt pipe, outside steel pipe and cement mortar filling between the two layers.
Ceramic tile lined pipes have very uniform coating of specially formulated ceramic material that is affixed to the inner of the pipe.
The material of the rare earth alloy wear-resistant pipe is ZG40CrMnMoNiSiRe, which is also the grade of rare earth alloy steel.
Tubes Erosion Shields are used to protect boiler tubing from the highly erosive effects of high temperatures and pressures thereby greatly extending tube life.
The ASTM A213 T91 seamless tubes are primarily used for boiler, superheater, and heat-exchanger.
When you partner with Sunny Steel, you can stop worrying about meeting deadlines thanks to our responsive and timely service. You'll also say goodbye to unnecessary shopping around. Instead, you'll get white glove service from an expert who understands your needs and can get you the materials you need quickly.
