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Supplier of Flange Clamps, Turnbuckles, Tractor Top Links

Swintool is China professional manufacturer, suppliers and exporters of these products as follows:

Flange clamps: offer SAE J518 ISO 6162 standard and custom flange clamp solution；

Turnbuckles: DIN 1478 standard and various industrial application custom design；

Ratchet turnbuckles: Swintool brand catalogue and build to customer specification；

Tractor top links: focus on high quality standards from every place quality control；

About Us

Yuyao Swintool Co., Ltd.

Premium quality since 1998

Swintool is professional China Flange Clamps Suppliers and Turnbuckle exporter, with a certificate of ISO 9001:2008.

Our range of products includes SAE flange clamps, turnbuckles, top link assemblies, ratchet turnbuckles, industrial ratchet wrenches. The advantages of our product are the following:
1. Flange Clamps: SAE J 518 (ISO 6162 -1/-2) standards, from hot forging, CNC machining in our factory. SWINTOOL also offers OEM solutions.
2. Turnbuckle: A manufacturer in turnbuckle DIN 1478 made of seamless steel pipe. 500-ton Horizontal hydraulic machine for pipe forming bigger diameter and longer length, also for drop forging.
3. Top link assembly: Professional processing technology of more than 15 years of experience, CNC precision machining, Hot forgings, heat treatment and strict assembling procedure.
4. Ratchet turnbuckle: As a top manufacturer and designer, we have our company standard of ratchet turnbuckles, also can design for your special need.
5. Ratchet wrench: We can design the Industrial ratchet wrench with heavy duty, big size and special purposes for original equipment manufacture. We offer custom OEM/ODM wholesale Flange Clamps, Turnbuckles, Tractor Top Links

Our Certifications

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Latest News

Industry Knowledge Extension

In What Applications Are Flange Clamps Most Widely Used Across Various Industries?
Flange clamps are extensively used in construction and earthmoving equipment due to their unmatched strength, ease of installation, and ability to maintain leak-free connections under severe mechanical stress. Equipment such as excavators, cranes, loaders, backhoes, and bulldozers rely heavily on high-pressure hydraulic systems to perform core functions like lifting, digging, pushing, and transporting heavy materials. These machines operate in rugged environments—construction zones, mines, and remote outdoor areas—where reliability is critical. Any failure in a hydraulic connection can lead to operational downtime, financial loss, and even safety hazards. The hydraulic circuits in these machines involve substantial fluid pressure, in the range of 2500 to 6000 PSI. Flange clamps are used to connect pumps to cylinders, valves to actuators, and hoses to motors. Because of the frequent vibration, impact loading, and temperature variations experienced during operation, the connection system must resist loosening, misalignment, or leakage. Flange clamps meet these requirements by providing a bolted connection with an O-ring sealing groove that ensures tight sealing under pressure, even during dynamic load cycles. Yuyao Swintool Co., Ltd. is professional China Flange Clamps Supplier and Turnbuckle exporter, providing SAE J518 (ISO 6162-1/-2) flange clamps made from high-quality hot-forged steel and precision CNC machining. These clamps are ideal for construction machinery manufacturers and maintenance service providers. With SWINTOOL’s expertise in OEM customization, clients can request specific flange sizes, thread types, coatings, and materials for compatibility with different hydraulic fluids or environmental challenges. Their ISO 9001:2008-certified production process ensures that each clamp meets strict dimensional tolerances and mechanical performance standards. As a result, SWINTOOL flange clamps contribute to increased machine uptime, lower maintenance needs, and enhanced safety across construction and infrastructure projects.

Flange clamps play a vital role in agricultural and forestry equipment, where hydraulic power is integral to performance. Machinery such as tractors, plows, sprayers, combine harvesters, hay balers, log splitters, and forwarders depend on hydraulic circuits for propulsion, lifting, cutting, seeding, and soil manipulation. These operations occur across varied terrains and under unpredictable weather conditions, making durability and ease of repair critical. Any hydraulic failure—especially due to leakage or disconnection—can interrupt seasonal operations, resulting in productivity loss. In such systems, flange clamps are used to join hydraulic pumps to motors, cylinders, and control units. Their ability to provide a rigid, high-pressure-resistant connection ensures smooth operation and reliable energy transfer across moving parts. Unlike threaded fittings that may loosen under vibration or welded joints that require heavy maintenance, flange clamps offer a reusable, stable, and service-friendly solution. Their design allows for quick disassembly during repairs, reducing equipment downtime in the field. Yuyao Swintool Co., Ltd. supplies flange clamps suitable for the harsh and dynamic operating environments of agricultural and forestry sectors. As a professional China Flange Clamps Supplier and Turnbuckle exporter, SWINTOOL manufactures clamps from hot-forged materials that can endure impact, weather exposure, and constant cycling. Their CNC-machined grooves ensure tight O-ring retention and effective sealing, even under high pulsating pressures. For equipment that must operate in muddy, dusty, and corrosive environments, SWINTOOL also offers clamps with anti-corrosion surface treatments and material upgrades such as zinc-plated or stainless steel versions. With over 15 years of manufacturing experience and a strong focus on customer-specific solutions, SWINTOOL flange clamps help agricultural machinery manufacturers improve system reliability, reduce fluid waste, and maximize seasonal output with less maintenance effort.

The oil and gas industry presents one of the most demanding environments for hydraulic and fluid connection components. Whether in upstream exploration, offshore drilling rigs, midstream pipeline transport, or downstream refining plants, high-pressure fluid systems are essential for operation. These systems transport crude oil, water, gas, and hydraulic fluids under high temperature, corrosive atmospheres, and fluctuating loads. Equipment such as blowout preventers (BOPs), wellhead control panels, submersible pumps, and valve actuators rely on hydraulic power—and secure flange connections—to function without failure. In these systems, flange clamps are used to connect pipe flanges, hoses, or manifold blocks where a strong mechanical joint and leak-free performance are essential. Oil and gas operations cannot afford leakage due to both environmental regulations and explosive risks. Clamps must handle subsea pressure, thermal expansion, and chemical attack from brine, drilling fluids, and hydrocarbons. Yuyao Swintool Co., Ltd. offers a line of SAE J518-compliant flange clamps suitable for oil and gas applications. As a professional China Flange Clamps Supplier and Turnbuckle exporter with ISO 9001:2008 certification, SWINTOOL ensures all components meet strict safety and dimensional standards. The company uses hot forging to enhance material grain structure and strength, while precision CNC machining guarantees tight sealing tolerances. For offshore or corrosive environments, SWINTOOL provides special coatings such as black oxide, zinc-nickel plating, or even stainless-steel fabrication upon request. These enhancements protect the clamp body against rust, pitting, and galvanic corrosion. SWINTOOL’s engineering team can also collaborate with clients on OEM requirements, ensuring that the flange clamp design integrates seamlessly with high-risk hydraulic systems found in oil and gas operations.

Marine hydraulic systems face intense operational demands, including saltwater exposure, vibration from ship engines, mechanical shock from loading operations, and temperature variations between engine rooms and outdoor decks. Flange clamps are used throughout ships and offshore structures in steering systems, cargo cranes, deck winches, anchor handling gear, hatch lifters, and automated mooring systems. Their ability to deliver rigid and vibration-resistant hydraulic connections makes them the preferred option for high-pressure marine systems that must remain leak-free despite dynamic movement and long service intervals. Unlike other environments, the marine industry demands enhanced corrosion resistance due to continuous exposure to saline air, seawater spray, and fluctuating humidity levels. Failure of a hydraulic connection at sea—whether in a naval vessel or commercial cargo ship—can lead to serious delays, safety hazards, or even loss of equipment function during critical operations. Yuyao Swintool Co., Ltd., a professional China Flange Clamps Supplier and Turnbuckle exporter, delivers flange clamps tailored to marine and shipbuilding needs. Manufactured using hot forging for structural toughness and CNC machining for sealing precision, these clamps are tested to meet the marine industry’s exacting reliability expectations. SWINTOOL also provides corrosion-resistant versions, including zinc-nickel plated or stainless steel clamps, to suit long-term exposure to seawater environments. The company’s OEM services enable clients to request specific bolt patterns, mounting configurations, or surface treatments to meet marine classification standards. With ISO 9001:2008 quality control procedures in place, SWINTOOL ensures that each clamp performs under the rigorous standards imposed by maritime operations and international shipbuilders. These flange clamps contribute to the durability and functionality of hydraulic systems onboard, improving service life and lowering maintenance intervals.