Industries

A tubing block is a type of pulley block installed beneath the winch, known as the drawworks, on a land rig. It distributes the load through wire rope and is used to safely lift and lower heavy tubing (production pipes) and tools.

Crosby McKissick 70 Series Tubing Blocks feature a spring-loaded hook mechanism that absorbs sudden load changes, reducing wear on the wire rope and hook. In addition, instead of a conventional threaded design, they use a split-nut retention system that prevents thread corrosion and allows for easy disassembly, inspection, and lubrication.

With the use of a duplex hook, operation of the elevator that grips the tubing is smooth and efficient. Designed in compliance with API (American Petroleum Institute) standards for drilling equipment, these tubing blocks deliver exceptional reliability even in the demanding conditions of Land Rig operations.

Products Used:

Crosby McKissick 70 Series Tubing Blocks

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In drilling rigs, multiple sections of tubing (production pipes) are connected together to drill deep into the ground until reaching oil or gas reservoirs. During this process, a Power Tong—a hydraulic torque wrench—is used to thread and connect the tubing.

Large equipment such as the Power Tong is securely fastened with wire rope to prevent accidental movement or detachment caused by sudden rotation or malfunction. In the first photo, three Crosby G-450 Clips firmly hold the wire rope in place. These clips exceed ASME standards and feature hot-dip galvanizing for excellent corrosion resistance.

Crosby Standard Wire Rope Thimbles protect the looped ends of the wire rope, preventing wear and reducing stress concentration.

The wire rope is attached to the equipment using G-2130 Bolt Type Shackles, which have passed rigorous fatigue and Charpy impact tests. With hot-dip galvanized finishes for superior corrosion protection, these shackles ensure safe and reliable performance even in the harsh environments of drilling rigs.

Products Used:

Crosby G-450 Clips

Crosby Standard Wire Rope Thimbles

Crosby G-2130 / S-2130 Bolt Type Anchor Shackles

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A Land Rig has a derrick that is typically 10 to 20 meters taller than that of a Workover Rig, making it more susceptible to wind loads, rotational forces, and vibration. As a result, the role of the Guy Wire—which stabilizes the derrick—is even more critical.

To firmly anchor these guy wires to the ground, various Kito Crosby rigging products are used.
Crosby Standard Wire Rope Thimbles protect the looped ends of the wire rope, preventing wear and evenly distributing loads. Their hot-dip galvanized finish provides excellent corrosion resistance, even in harsh outdoor environments.

Crosby A-1337 LOK-A-LOY® 10 Alloy Connecting Link securely connects the thimble and hook. Made of quenched and tempered alloy steel, it offers exceptional safety, withstanding forces up to 2.5 times its working load limit.

Crosby S-1326 SHUR-LOC® Swivel Hooks are used to fasten the guy wires to ground anchors. These hooks can withstand 2.5 times their working load limit and have passed fatigue tests of 20,000 cycles at 1.5 times the rated load. The self-locking mechanism engages automatically under load, combining safety with ease of use. Designed for reliability, these hooks are even approved for personnel lifting applications.

Products Used:

Crosby S-1326 SHUR-LOC Swivel Hooks

Crosby A-1337 LOK-A-LOY® 10 Alloy Connecting Link

Crosby Standard Wire Rope Thimbles

A Drilling Rig is used to drill a well to extract oil and gas from deep underground. First, a drill bit is used to drill the wellbore, and large pipes called casing are installed to support the walls and prevent collapse or fluid leakage. Inside the casing, a smaller pipe called tubing is placed, which serves as the passage for oil and gas to flow to the surface.

Crosby McKissick Tubing Blocks are used on Workover Rigs. The Tubing Block is installed in the drawworks of the rig, and is raised up or down with a large winch using wire rope to safely and efficiently insert or remove tubing from an existing well. With a special locking mechanism and drop-prevention design, pipe and tubing can be handled securely. Flame-hardened grooves and high-quality bearings reduce wire rope wear, while the compact, well-balanced design ensures stable lifting operations.

To securely support the upright derricks, Grade 10 Gunnebo Industries GrabiQ Chains KLA are used. The chains are connected to the wire ropes through forged alloy steel Coupling Links G and Crosby Thimbles, providing reliable support for the operations of the Workover Rigs.

Products Used:

Crosby McKissick 80 Series Tubing Blocks

Gunnebo Industries GrabiQ Chain KLA, Grade 10 (200)

Gunnebo Industries Coupling Link G

Gunnebo Industries Coupling Link G for Master Link and Eye Hook

Crosby Standard Wire Rope Thimbles

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From the top of a Workover Rig derrick, several steel wires are stretched diagonally down to the ground. These are known as Guy Wires. Derricks reaching heights of 20–30 meters are susceptible to wind loads and operational vibrations, which can cause structural instability, equipment damage, or safety risks to workers. Guy Wires serve as essential reinforcement, ensuring the stability and safety of the rig during operation.

Crosby rigging hardware is used to secure the guy wires.
Crosby McKissick Guy Line Blocks are anchored to the ground on one end, while the other end routes the wire rope through the sheave and secures it with Fist Grip Clips. By running the wire through the block, the tension on the wire is evenly distributed, and the sheave rotation prevents friction and wear between the wire and metal surfaces. In addition, the block allows operators to safely tighten or release the wire during rigging, enabling fine adjustment of the derrick’s vertical alignment.

Crosby Fist Grip Clips feature an integrated bolt and saddle design, allowing the wire rope to be quickly and securely fastened by simply tightening the nuts. The entire clip is galvanized for excellent corrosion resistance, making it reliable even in harsh outdoor environments.

Products Used:

Crosby McKissick Guy Line Blocks

Crosby Fist Grip Clips

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A Jack Up Rig is a mobile offshore drilling unit used for extracting oil in shallow waters, typically up to about 120 meters deep. During transport, the rig is floated on the sea surface and towed by a vessel to the drilling site. Once positioned, its legs are lowered to the seabed and the entire platform is elevated above the water, providing a stable working environment protected from waves and vibration.

Similar to land-based drilling, the operation involves drilling down to reach oil and gas reservoirs and installing steel pipes called casings to support the wellbore. These casings can measure up to 12 meters in length and weigh about one ton each. When multiple casings are bundled and transported with wire ropes, Crosby Bundle Clips play a vital role in securing them safely.

There are two types of Bundle Clips: the G-460 Soft Eye Bundle Clip, designed for direct wire rope bundling, and the G-461 Thimble Eye Bundle Clip, specialized for use with thimble-fitted wire ropes. Both are hot-dip galvanized for superior corrosion resistance and offer outstanding durability even in harsh offshore environments.

Products Used:

Crosby G-460 Soft Eye / G-461 Thimble Eye Bundle Clip

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A Mud Pump is used to circulate drilling mud, pumping it down into the wellbore to carry rock cuttings generated by the drill bit back to the surface. It also cools and lubricates the bit, stabilizes the wellbore, and controls formation pressure through the hydraulic pressure of the mud.

On Offshore Rigs, Mud Pumps operate under extremely harsh conditions, exposed to salt air and ocean waves. Kito Crosby provides a range of products that support the replacement and maintenance of these critical pumps.

CB Chain Hoists are used on Offshore Platforms for precise positioning when lifting heavy Mud Pumps with cranes. Their unique brake mechanisms and exceptional mechanical efficiencies allow for safe and smooth operations.

In addition, Crosby Standard Wire Rope Thimbles protect the loop section of the wire rope holding the Mud Pump from wear during replacement, while G-2130 Bolt Type Shackles securely connect the wire ropes and the hoists. Each product has passed rigorous fatigue and impact tests, and with hot-dip galvanizing for superior corrosion resistance, they ensure reliable performance even in the harsh marine environment.

Products Used:

Kito CB Chain Hoist

Crosby 2130 Bolt Type Shackle

Crosby Standard Wire Rope Thimbles

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In Japan, where natural gas resources are scarce, most LPG is imported from overseas. Gas produced in exporting countries is liquefied at low temperatures, reducing its volume to about 1/250 of its gaseous state, making large-scale transportation by tanker possible.

Upon arrival in Japan, LPG is transferred to onshore storage tanks by connecting a hose between the quay-side pipeline system and the tanker’s valve.

During offloading, RER2 Hazloc Electric Hoists are used to position heavy hoses. To reduce the load on the pipeline system during operations, it is common practice to keep the hoses suspended with the RER2s. When combined with an electric jib crane, the system can easily adjust hose positioning in response to changes in tide levels and other factors. Furthermore, even in environments with a high risk of explosion, its unique design suppresses electrical sparks, ensuring safe LPG offloading operations.

Products Used:

Harrington RNER2 Hazloc Electric Hoists

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A Rigging Loft is a storage unit for lifting and rigging equipment used on offshore oil platforms, often supplied in the form of containerized units. During drilling and maintenance operations, several tons of equipment and materials are lifted and moved daily, making the regular inspection and replacement of rigging gear essential.

Kito Crosby supplies not only shackles and thimbles—critical components for offshore operations—but also chain hoists and lever hoists. Shackles and thimbles feature high strength and excellent corrosion resistance through hot-dip galvanizing, while Kito Crosby’s hoists are renowned for their outstanding durability and wear resistance, ensuring safe and efficient lifting operations even in harsh marine environments.
In addition, shackles and thimbles also play a vital role during cargo loading and handling operations, supporting the smooth flow of supplies to offshore platforms.

Products Used:

Crosby 2130 Bolt Type Shackle

Crosby Standard Wire Rope Thimbles

Kito CB Chain Hoist

Kito LB Lever Hoists

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In LNG plants, large volumes of gas, refrigerant, and liquid flow through the system during the cooling and liquefaction process. As a result, thick and long pipes are intricately installed throughout the facility.

To install and weld these pipes safely and precisely, CB Manual Chain Hoists are used. Their unique braking mechanisms maintain stable performance over long periods, while their high mechanical efficiencies and durabilities enable safe and efficient alignment of the large and heavy pipes typical of LNG plants.

In addition, Crosby G-209 Screw Pin Anchor Shackles are used to connect the hoists to the building beam via lifting clamps and fiber slings. These shackles can be used in environments as cold as –40°C, have passed Charpy impact testing, and provide both high proof load and minimum breaking strength—making them ideal for LNG plant construction.

UBC Universal Beam Clamps securely connect hoists or shackles to beams. They feature a lock-nut protection system that prevents loosening caused by vibration. With their wide adjustable jaw openings and clamp screws that can be inserted from either side, the UBC Clamps enable safe and efficient installation.

Products Used:

Kito CB Manual Chain Hoists

Crosby G-209 / S-209 Screw Pin Anchor Shackles

Kito UBC Universal Beam Clamps

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In oil refineries, heavy and large-diameter piping, valves, and heat exchangers are intricately installed throughout the facility. These components are constantly exposed to high temperatures, high pressure, and corrosive environments, making regular maintenance essential.

Inside the plant, many areas are confined or located at height, where mobile cranes cannot be used. In such cases, chain hoists and lever hoists are suspended from fixed beams or structural frames, allowing safe replacement and servicing of piping and valves even in limited spaces.

Because equipment failure or maintenance delays can lead directly to production downtime, many refineries in Europe choose CB Chain Hoists, known for their superior safety and mechanical efficiency, together with LB Lever Hoists, which combine easy and safe chain length adjustment with a lightweight, compact design.

In addition, Crosby G-2130 Bolt Type Shackles play a vital role in securely supporting the loads handled by the CB and LB hoists.
These shackles have passed rigorous fatigue and Charpy impact tests and feature a hot-dip galvanized finish that provides excellent corrosion resistance, ensuring safe and reliable operation even in harsh environments.

Products Used:

Kito CB Manual Chain Hoists

Harrington CB Manual Chain Hoists

Kito LB lever Hoists

Harrington LB Lever Hoists

Crosby G-2130 / S-2130 Bolt Type Anchor Shackles

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In petrochemical plants, various types of oils are used, including process oils, lubricating oils, catalyst oils, and recovered waste oils—all essential feedstocks for producing petrochemical products. Process oils are stored in Industrial Oil Barrels, 200 L (55 US gallon) drums, and fed into reaction vessels for processing.

At a petrochemical plant in Costa Rica, jib cranes combined with EQ electric chain hoists are used to lift and pour these oil drums into the reaction vessels. The jib crane enables smooth rotation and precise positioning, even in confined spaces, allowing for efficient operation.

EQ hoist, equipped with a Variable Frequency Drive (inverter control), allows soft starting and stopping, minimizing drum sway and preventing oil spillage. Its high-speed no-load function further improves handling efficiency. In addition, the nickel-plated load chain used in the EQ provides excellent resistance to acids and alkalis, making it ideal for the corrosive environments typical of petrochemical plants.

Products Used:

Kito EQ Electric Chain Hoist

Harrington EQ Electric Chain Hoists