Explosion-proof crane solutions for the four key areas of oil and gas extraction: drilling, well completion, production, and gathering/transportation.

Selection Parameter Comparison Across the Four Areas

Kelude Heavy Industry: Overhead & Gantry Cranes

Kelude Heavy Industry is a leading manufacturer of overhead cranes, gantry cranes, and electric hoists in China. With over 20 years of engineering experience, we design, build, and service lifting equipment for a wide range of industrial applications, including manufacturing, logistics, shipbuilding, and power generation. Our cranes are engineered for safety, durability, and performance, and are fully customizable to meet your specific material handling requirements.

Overhead Cranes Built for Heavy-Duty Performance

Our overhead crane lineup includes single-girder and double-girder models with lifting capacities from 1 ton to 150 tons, with spans up to 40 meters. Each crane is designed with a low-headroom profile to maximize hook height and optimize your available workspace. Standard features include variable-frequency drives (VFD) for smooth load control, anti-sway technology for precise positioning, and a redundant safety braking system on all hoist mechanisms.

Kelude overhead cranes are available in both top-running and under-running configurations, and can be supplied with either a cab or pendant control. We also offer explosion-proof versions for hazardous environments, as well as cranes with IP55 or higher protection ratings for dusty or humid conditions. All cranes are manufactured in compliance with ISO 4301 and ISO 12480 standards, ensuring international quality and safety compliance.

Gantry Cranes: Versatile Lifting for Outdoor and Indoor Use

Our gantry crane range covers single-leg, double-leg, and rubber-tired gantry (RTG) models, with capacities from 5 tons to 300 tons. These cranes are ideal for outdoor storage yards, precast concrete plants, steel fabrication shops, and container handling terminals. The gantry structure is engineered for high rigidity and stability, with a self-locking anti-derailment device on the wheel assemblies for enhanced safety.

For applications requiring frequent relocation, we offer portable gantry cranes with adjustable height and span. For heavy industrial use, our large-capacity gantry cranes feature a box-type main girder with finite element analysis (FEA) optimized design, ensuring minimal deflection and maximum service life. All gantry cranes can be equipped with a variety of hoists, including wire rope hoists, chain hoists, or explosion-proof hoists, depending on your application.

Electric Hoists: Reliable Lifting Components

Kelude manufactures a complete line of electric wire rope hoists and electric chain hoists, with capacities from 0.5 tons to 50 tons. Our hoists feature a compact design, high-efficiency gearbox, and a low-noise brake motor. The hoist drum is machined with machine-cut grooves for proper rope spooling, extending wire rope service life. All hoists are factory-tested at 125% of rated load before shipment.

We offer hoists with various lifting heights, speeds, and control voltages to match your site requirements. Options include remote radio control, variable-frequency drive for precise speed control, and over-speed protection devices. Our hoists are widely used as the lifting mechanism for overhead cranes, gantry cranes, and monorail systems, and are also available as standalone units for workshop use.

Crane Components and After-Sales Support

Beyond complete cranes, Kelude supplies a full range of crane components, including end carriages, crane wheels, rail clamps, buffer stops, and electrification systems (C-rail, flat cable, or festoon systems). We also provide spare parts for all our crane models, ensuring long-term maintainability and minimal downtime.

Our after-sales service includes on-site installation supervision, operator training, and preventive maintenance programs. With a global network of service partners, we offer responsive technical support and spare parts delivery worldwide. We are committed to building long-term partnerships with our customers through reliable products and dedicated service.

Contact Kelude for a Custom Crane Solution

Whether you need a single crane or a complete material handling system, our engineering team can design a solution tailored to your specific loads, duty cycles, and facility constraints. Contact us today with your requirements to receive a detailed quotation and technical proposal.

Oil & Gas Zone Characteristics and Crane Requirements

Oil and gas extraction spans four core zones—drilling, completion/workover, production, and gathering/transportation—each with distinct explosion protection requirements and operational demands. The drilling zone (rig assembly, mast erection, casing running, and cementing) is the most demanding in terms of lifting capacity and safety. The mast assembly alone weighs 80–200 t, requiring petroleum special cranes rated to API 8C/8B load levels. These cranes must be equipped with a Dual Braking System and an emergency release mechanism to rapidly shed load in the event of a blowout. The drilling zone is classified as Ex d IIB T4, meaning all electrical components must be explosion-proof encapsulated and engines must be fitted with spark arresters.

The completion/workover zone (tubing running and pulling, sucker rod handling, wellhead replacement, and equipment maintenance) involves lifts of 30–80 t. Individual tubing joints weigh 100–300 kg, and workover operations require continuously running and pulling hundreds of joints. A workover rig with an integrated mast and winch—offering easy mobility—or a truck-mounted crane is recommended. The winch drum must provide a rope capacity of at least 3,000 m, and the braking system should feature dual redundancy with band brakes plus an auxiliary brake.

In the production zone (separators, storage tanks, heaters, and pumping units), lifting requirements range from 10–32 t. Kelude oil contains associated gas (methane/ethane), so the area carries an Ex d IIB T4 explosion protection rating. Pumping unit installation demands precise shaft alignment (deviation ≤ ±3 mm). Recommended equipment includes explosion-proof electric hoists or explosion-proof LD type overhead cranes with a pressurized explosion-proof type (Ex p) electrical control box.

The gathering/transportation zone (manifolds, separation, metering, and export) involves lifts of 5–20 t. With separators, heat exchangers, and valve manifolds densely packed throughout the station, the recommended solution is an explosion-proof KBK flexible system (125–5,000 kg) paired with a pneumatic balancer—eliminating any spark risk from electric motors or manual push-pull operation. Kelude's explosion-proof crane product line covers all zones of oil and gas extraction, with every explosion-proof unit certified through national explosion-proof certification.

Why Choose Kelude Heavy Industry

Frequently Asked Questions