Female Elbow 45°

In commercial vehicle pneumatic piping, tight routing envelopes and chassis vibrations place constant stress on air lines. Sharp tubing bends near port entries often lead to localized stress concentration, micro-kinking, and eventual system pressure drops.

Our 45° Female Elbow Air Brake Fittings provide a precise, engineered directional transition. By reducing the bending force on SAE J844 nylon tubing, these fittings protect the pneumatic circuit's integrity, damp structural vibrations, and prevent premature line fatigue in high-stress truck and trailer applications.

Compliance & Safety Standards: Engineered, manufactured, and tested to meet or exceed DOT FMVSS 106 (49 CFR 571.106) and SAE J1131 / SAE J246 performance requirements for commercial vehicle air brake plumbing.

For special fleet requirements, custom thread depths, or non-standard O.D. dimensions, please contact our engineering team with your technical drawings.

C36000 Brass Alloy Integrity
Material Traceability:
We utilize only verified C36000 (CA360) alloy. Every raw material billet batch is validated for copper (60.0% - 63.0%), lead (2.5% - 3.7%), and iron content (<0.35%) to ensure optimum stress-corrosion cracking resistance.
Vibration Resistance:
The high fatigue strength of CA360 brass prevents structural cracking under continuous, multi-axis chassis vibration.

Precise 45-Degree Routing Physics
Compared to standard straight fittings or sharp 90-degree elbows, the 45-degree configuration:

• Reduces flow turbulence and localized pressure drop inside the pneumatic circuit.
• Keeps the nylon tubing safely above its minimum bend radius, preventing tube wall collapse under high summer operating temperatures.
• Optimizes clearance in tight spaces like engine bays, cab-tilting zones, and trailer bogie areas.

Machined Thread and Tube Interface
Thread Accuracy:
All female threads are cut using high-precision CNC tooling and verified with hardened thread ring and plug gauges to prevent cross-threading and ensure airtight thread engagement.
Tubing Seat Geometry:
The internal machining tolerance is held within ±0.02 mm to ensure uniform insert compression and consistent, repeatable mechanical tube-retention.

We treat quality control as an auditable process. Every production run is subjected to standard automotive-grade validation:

[Incoming Billet Inspection]  [CNC Real-Time Dimension Monitoring]  [Thread Gauge 100% Audit]  [Randomized Air Leakage Testing]

Spectrometer Analysis:
Verifies the brass alloy formulation prior to machining.

Thread Go/No-Go Gauging:
100% inspection of thread depth, pitch, and profile according to ANSI/ASME B1.20.1 standards.

Dimensional SPC (Statistical Process Control):
Critical tolerances, including tube insert insertion depth and O-ring groove dimensions, are tracked to maintain batch-to-batch repeatability.

Visual Defect Screening:
Assures internal bores are free from machining burrs, brass shavings, or sharp internal edges that could puncture or score the nylon tubing during installation.

Commercial Fleet Class 6-8 Trucks:
Air brake piping, auxiliary control lines, and primary/secondary reservoir connections.

Trailer Pneumatic Infrastructure:
Slider-axle control systems, suspension leveling valves, and emergency braking lines.

Transit Buses & Coach Chassis:
High-duty cycle doors, suspension kneeling systems, and dashboard air gauge lines.

Heavy-Duty Aftermarket Maintenance:
Standard replacement fittings matched to original equipment manufacturer (OEM) dimensions for fleet workshops.

As an industrial manufacturer, we coordinate with global distributors, OEM assembly lines, and fleet purchasing managers to support structured supply chains.

Minimum Order Quantity (MOQ):
500 pieces per size/specification (flexible trial volumes can be evaluated for qualified OEM programs).

Production Lead Time:
Typically 15 to 25 business days, depending on scheduled batch volumes and surface plating requirements.

Engineering Drawings:
2D PDF blueprints and 3D STEP/IGES models are available on request to assist your design engineers with digital layout integration.

Custom Packaging:
Options include individual polybagging, batch-cartons with custom barcode labeling (UPC/EAN/QR), and heat-treated export-palletized shipping.

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