Compatible Metric One Piece Hydraulic Fittings Manufacturer in China

TOPA supplies metric one-piece hydraulic hose fittings for distributors, hose assembly workshops, maintenance companies, and equipment manufacturers. Our product range covers different metric threads, sealing structures, hose sizes, fitting angles, materials, and surface treatments.

Products Lists

TOPA supplies a range of metric one-piece fittings for different hydraulic hose connections and assembly requirements. The available models should be selected according to the thread, sealing face, hose dash size, fitting angle, material, and hose construction.

Metric One-piece Hydraulic Fittings

This video introduces the main types of metric one-piece hydraulic fittings available from Topa. We offer a wide range of connection styles, fitting angles, and sizes to meet different hydraulic hose assembly requirements.

For size confirmation, model selection, or customized specifications, please contact our team. Send us your hose size, thread type, fitting photo, or drawing, and we will help you find the right solution.

Metric Thread and Sealing Options

Metric hydraulic fittings are not identified by thread diameter alone. Different fittings may use similar metric threads while relying on different sealing faces, cone angles, tube series, O-rings, or connection structures.

Metric Thread and Sealing Options

A metric one-piece fitting must match more than the nominal hose size. The hose construction, reinforcement type, actual outside diameter, cover thickness, fitting series, ferrule design, and final crimp diameter can all affect insertion, retention, sealing, and assembly reliability. Two hoses marked with the same dash size may have different internal structures and outside dimensions. For this reason, a fitting and crimp setting approved for one hose should not automatically be applied to another hose without verification.

Why the Same Hose Size May Need a Different Check

The hose dash size identifies the nominal hose ID, but it does not fully describe the hose construction. Differences may include:

Wire braid or spiral reinforcement
Number of reinforcement layers
Actual hose outside diameter
Cover and inner-tube thickness
Reinforcement position
Hose manufacturing tolerance
Skive or no-skive construction
Recommended fitting and ferrule series

How to Select the Right Metric One-Piece Fitting

A metric thread alone is not enough to confirm a hydraulic fitting. The fitting must match the hose, thread, sealing structure, connection size, fitting angle, mating component, and operating conditions. Confirming these six areas before ordering can reduce thread mismatch, leakage, installation interference, and incorrect hose assembly.

Confirm the Hose Size

Start by confirming the hose ID, dash size, hose standard, reinforcement structure, and hose manufacturer or series when available.

Identify the Thread

Measure and identify the complete thread rather than relying only on its approximate outside diameter.

Check the Sealing Face

The sealing structure determines how the connection prevents leakage and must be confirmed separately from the thread.

Confirm the Hydraulic Fitting Angle

Select a straight, 45-degree, or 90-degree fitting according to the hose routing and available installation space.

Confirm the Connected Component

Identify the component or port that the fitting will connect to, such as a tube fitting, adapter, existing hose assembly, or equipment port.

Review the Operating Conditions

Confirm the actual working conditions before finalizing the fitting material, surface treatment, and structure.

Custom and OEM Metric Fitting Service

TOPA supports distributors, importers, private-label hydraulic brands, hose assembly companies, maintenance suppliers, and equipment manufacturers that require standard or customized metric one-piece fittings. Customization can be based on an existing model, customer drawing, physical sample, dimensional record, or specific application requirement.

Product Design Customization

TOPA can review product design requirements including connection dimensions, thread specification, sealing structure, fitting angle, drop length, hose-side structure, and installation space.

Material and Surface Options

Available material and surface options can be selected according to the application, environment, corrosion requirement, and customer specification.

Product Identification

Customized product identification can help distributors and hydraulic brands manage inventory, replacement, and traceability.

Private-Label Packaging

TOPA can support individual plastic bags, private-label packaging, customer SKU labels, barcode labels, inner boxes, carton labels, and mixed-SKU order packing.

Metric Crimp Hydraulic Fitting Manufacturing Process

Each hydraulic fitting is produced through a controlled manufacturing process to ensure reliable performance, precise dimensions, and consistent quality.

Raw Material Preparation

The manufacturing process begins with the selection and inspection of suitable raw materials, usually carbon steel bars or stainless steel according to the product and order requirements.

Hot Forging

The steel is heated and formed into the initial fitting body through hot forging. This process helps create the basic shape of the fitting while improving the internal metal structure and mechanical strength.

CNC Precision Machining

After forging, the fitting body is transferred to CNC machining centers. Critical areas such as the thread, sealing face, hexagon, hose insert, ferrule connection, and overall dimensions are precisely machined according to the approved drawing.

Thread Processing

The internal or external metric thread is machined according to the required diameter, pitch, tolerance, and connection type. During this stage, the thread profile, effective length, surface condition, and connection dimensions must be carefully controlled.

Surface Treatment

After machining and cleaning, the fittings receive the required surface treatment, such as zinc plating or zinc-nickel plating. The coating helps improve corrosion resistance and appearance during storage, transportation, and service.

Quality Inspection

Before packing and shipment, the finished fittings are inspected for critical dimensions, thread accuracy, sealing surfaces, appearance, coating condition, marking, and product identification.

FAQ

How do I identify a metric hydraulic fitting?

Check the thread diameter, thread pitch, connection gender, sealing face, fitting angle, hose size, and mating component. A metric thread diameter alone cannot confirm the complete fitting.

Are metric light-series and heavy-series fittings interchangeable?

They should not be treated as interchangeable without checking the tube size, connection dimensions, cone structure, pressure requirements, and mating component.

Can TOPA match an existing metric fitting part number?

TOPA can review an existing part number together with fitting photos, dimensions, thread information, hose size, and application requirements.

Can two metric fittings with the same thread be used interchangeably?

Not necessarily. They may use different sealing faces, cone structures, O-rings, tube series, or connection dimensions.

Can TOPA produce metric fittings from a drawing or sample?

Yes. Customers can send a drawing, sample, existing model, or dimensional record for technical review and quotation.

Can I order mixed metric fitting models?

Mixed-SKU orders can be discussed according to the model, quantity, packaging, production schedule, and labeling requirements.

What materials are available for metric fittings?

Available options may include carbon steel and stainless steel. The exact material grade and surface treatment should be confirmed according to the product and order.

Can TOPA provide straight, 45-degree, and 90-degree metric fittings?

TOPA supplies different fitting configurations according to the available product model. The angle and drop dimensions should be confirmed before ordering.

Metric one-piece Hydraulic Fitting Catalog

Topa offers different types of Metric one-piece hydraulic fitting, this catalog includes all kinds of Metric hydraulic fittings. If you need more information of Metric one-piece hydraulic fitting, please contact us.

Compatible Metric One Piece Hydraulic Fittings Manufacturer in China

Products Lists

TP-1CA43 Metric Hydraulic Fitting

TP-1CE43 Metric Hydraulic Fitting

TP-1CF43 Metric Hydraulic Fitting

Metric One-piece Hydraulic Fittings

Metric Thread and Sealing Options

Metric 24° Cone Connection

Metric O-Ring Seal

Metric Standpipe Connection

Metric Banjo Connection

Metric Thread and Sealing Options

Why the Same Hose Size May Need a Different Check

How to Select the Right Metric One-Piece Fitting

Confirm the Hose Size

Identify the Thread

Check the Sealing Face

Confirm the Hydraulic Fitting Angle

Confirm the Connected Component

Review the Operating Conditions

Custom and OEM Metric Fitting Service

Metric Crimp Hydraulic Fitting Manufacturing Process

Raw Material Preparation

Hot Forging

CNC Precision Machining

Thread Processing

Surface Treatment

Quality Inspection

FAQ

How do I identify a metric hydraulic fitting?

Are metric light-series and heavy-series fittings interchangeable?

Can TOPA match an existing metric fitting part number?

Can two metric fittings with the same thread be used interchangeably?

Can TOPA produce metric fittings from a drawing or sample?

Can I order mixed metric fitting models?

What materials are available for metric fittings?

Can TOPA provide straight, 45-degree, and 90-degree metric fittings?

Metric one-piece Hydraulic Fitting Catalog

Contact Topa