SAE Flange Clamps — FL & FS Series by RUIHUA HARDWARE

SAE Flange Clamps: Four Lines, One Standard

RUIHUA HARDWARE makes four flange clamp lines under the SAE J518 / ISO 6162 standard. Pick by pressure class (L-Series or S-Series) and structure (whole or split). All four are in stock and ship worldwide.

L-Series · Light

FL-W — L-Series Whole Flange Clamp

One-piece ring that slides over the tube before assembly. Delivers uniform 360° clamping force with fewer loose parts. Good for production lines and new OEM builds.

Type: Whole (one-piece)  |  Standard: ISO 6162-1 / SAE J518 Code 61

L-Series · Light

FL — L-Series Split Flange Clamp

Two halves that bolt around an existing connection. No hose removal needed — built for field maintenance and tight spaces.

Type: Split (two-piece)  |  Standard: ISO 6162-1 / SAE J518 Code 61

S-Series · Heavy

FS-W — S-Series Whole Flange Clamp

Heavy-duty one-piece clamp for high-pressure circuits. Thicker body, larger bolt pattern. Used in excavators, mining rigs, and offshore hydraulics.

Type: Whole (one-piece)  |  Standard: ISO 6162-2 / SAE J518 Code 62

S-Series · Heavy

FS — S-Series Split Flange Clamp

Two-piece clamp for high-pressure systems that need field-service access. Full S-Series bolt pattern and body thickness.

Type: Split (two-piece)  |  Standard: ISO 6162-2 / SAE J518 Code 62

Flange Clamp Dimensional Drawing

Note: Dimensions above are from RUIHUA HARDWARE standard production drawings. For tolerance-critical applications, request a certified dimensional report before ordering.

Whole vs. Split Flange Clamps — Quick Selection Guide

Both types meet the same SAE / ISO standards. The right choice depends on whether you're building from scratch or servicing in the field.

Why RUIHUA HARDWARE Flange Clamps

CNC-Machined Bolt Holes

Tight PCD tolerances. Bolts seat straight every time — no cross-threading on high-volume assembly lines.

Zinc Plating — 96-Hour NSS

Standard finish clears neutral salt-spray testing. Geomet® and zinc-nickel available for offshore or marine use.

Full Size Range: 1/2" to 3"

Both series cover DN 12 through DN 48. Custom bore sizes machined on request with 3-week lead time.

SAE J518 + ISO 6162 Compliant

Drop-in replacement for Parker, Eaton, Gates, and Manuli flange clamps. Same bolt pattern, same face dimensions.

Global Export — Trusted by OEMs

RUIHUA HARDWARE ships to Europe, Central Asia, Southeast Asia, and Africa. EXW, FOB, and CIF terms available.

OEM / Private Label Ready

Custom packaging, laser-engraved part numbers, and branded bags available for distributors and OEM customers.

Where RUIHUA HARDWARE Flange Clamps Are Used

Agricultural Machinery

Tractors, harvesters, sprayers. L-Series clamps handle the constant vibration and outdoor exposure of mobile farm equipment.

Construction Equipment

Excavators, wheel loaders, bulldozers. S-Series covers the high-shock loads and pressures above 350 bar typical in earthmoving hydraulics.

Industrial Power Units

Presses, injection-molding machines, and HPUs. Standardized SAE flanges make modular system design straightforward.

Mining & Offshore

Corrosive environments need Geomet® or zinc-nickel coatings. S-Series body thickness handles shock and vibration underground or offshore.

Material Handling

Forklifts, cranes, lifting platforms. L-Series whole clamps keep part count low in tight hydraulic circuits.

Oil & Gas

Wellhead control panels, workover rigs. Split clamps let technicians service connections without dismantling the entire circuit.

Frequently Asked Questions

Questions our customers ask most often about RUIHUA HARDWARE flange clamps.

RUIHUA HARDWARE — Flange Clamp Manufacturer

RUIHUA HARDWARE is a China-based manufacturer of hydraulic fittings, flange clamps, hose clamps, and fluid-control accessories. We sell direct to distributors and OEMs worldwide.

Factory Direct

No trading company in the middle. Prices, lead times, and technical specs come straight from the production floor.

Batch Inspection

PCD, bolt-hole diameter, face flatness, and plating thickness checked every batch. CMM reports available on request.

Established Export Network

Regular shipments to the EU, Eastern Europe, Central Asia, and Southeast Asia. Familiar with CE documentation requirements.

Custom Engineering

Non-standard sizes, special alloys, private-label packaging — handled in-house with a 3-week average lead time.

Related Products at RUIHUA HARDWARE

Hose Clamps — Worm Drive & T-BoltS1 Series Quick-Release CouplingsParker 82 Series Push-In FittingsHydraulic Adapters & Transition FittingsHigh-Pressure Ball ValvesCustom Hydraulic Fitting Inquiry

Get a Quote — RUIHUA HARDWARE

Need pricing, a size recommendation, or a delivery estimate? Reach out — we'll get back to you fast.

• Email: ruihua@rhhardware.com

• WhatsApp: +86 137 3604 8924

• Phone: +86-574-62268512