Industry-Verified Manufacturing Data (2026)

Barrel

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Barrel used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Barrel is characterized by the integration of Chamber and Bore. In industrial production environments, manufacturers listed on CNFX commonly emphasize Chrome-molybdenum steel (e.g., 4140, 4150) construction to support stable, high-cycle operation across diverse manufacturing scenarios.

The cylindrical component of a firearm through which the projectile travels when fired.

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Product Specifications

Technical details and manufacturing context for Barrel

Definition
In a Tactical Semi-Automatic Rifle, the barrel is the precision-machined, rifled metal tube that guides the bullet's trajectory. It houses the chamber where the cartridge is seated and contains the rifling (spiral grooves) that imparts a stabilizing spin to the projectile. Its length, material, and internal profile are critical for determining the weapon's accuracy, muzzle velocity, and overall ballistic performance.
Working Principle
Upon firing, the expanding propellant gases force the projectile down the barrel. The rifling engages the bullet, causing it to spin, which gyroscopically stabilizes its flight for improved accuracy. The barrel also contains and directs the high-pressure gases until the projectile exits the muzzle.
Common Materials
Chrome-molybdenum steel (e.g., 4140, 4150), Stainless steel (e.g., 416R), Carbon fiber-wrapped steel
Technical Parameters
  • The internal diameter of the barrel, measured between opposing lands (the raised portions of the rifling). Common calibers for tactical rifles include 5.56mm (.223 Remington) and 7.62mm (.308 Winchester). (mm) Customizable
Components / BOM
  • Chamber
    The rear portion of the barrel where the cartridge is seated prior to firing. It is precisely shaped to match the cartridge case.
    Material: Steel
  • Bore
    The smooth, interior surface of the barrel before rifling is cut. Its diameter is slightly larger than the bullet's diameter.
    Material: Steel
  • Rifling (Grooves & Lands)
    Spiral grooves cut into the bore. The grooves are the cut-away portions, and the lands are the raised portions between them. They engage the bullet to impart spin.
    Material: Steel
  • Muzzle Crown
    The precisely finished end of the barrel at the muzzle. An even crown is critical for ensuring exiting gases do not disrupt the bullet's flight asymmetrically, affecting accuracy.
    Material: Steel
  • Barrel Extension / Lugs
    The rear part of the barrel that interfaces with the rifle's upper receiver or action, providing a locking surface for the bolt.
    Material: Steel
Engineering Reasoning
0-550 MPa internal pressure, 15-1200°C temperature
Yield strength exceedance at 620 MPa or 1300°C thermal softening threshold
Design Rationale: Lüders band propagation from cyclic plastic deformation at stress concentrations exceeding 0.2% proof stress
Risk Mitigation (FMEA)
Trigger Carbon migration at 900°C barrel-wall interface during sustained fire
Mode: Embrittlement-induced radial fracture at chamber-throat transition
Strategy: Chromium nitride coating (≥15μm) with 0.3% nitrogen diffusion barrier
Trigger Erosive wear from copper jacket ablation at 850 m/s projectile velocity
Mode: Bore diameter expansion beyond +0.15mm tolerance at forcing cone
Strategy: Electrolytic bore plating with 92% tungsten carbide matrix

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Barrel.

chrome molybdenum steel firearm barrel precision rifle barrel manufacturing specs carbon fiber wrapped steel barrel components firearm barrel BOM chamber rifling machinery equipment barrel extension lugs

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Injection Unit
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Work Rolls
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Rolls (Work Rolls)
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Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 60,000 psi (414 MPa) for high-pressure rifle barrels
other spec: Barrel life: 3,000-10,000 rounds (rifles), 5,000-50,000 rounds (handguns) depending on caliber and firing rate
temperature: -40°C to 500°C (dependent on material and cooling)
Media Compatibility
✓ Lead/copper alloy projectiles ✓ Nitrocellulose-based propellants ✓ Steel-cased ammunition
Unsuitable: Corrosive ammunition (e.g., with potassium chlorate primers) without immediate cleaning
Sizing Data Required
  • Caliber/projectile diameter (e.g., 9mm, .308)
  • Barrel length (affects velocity and accuracy)
  • Twist rate (stabilization for projectile weight/length)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Abrasive erosion
Cause: Continuous exposure to abrasive materials or particles in the process fluid, leading to gradual material loss and thinning of barrel walls.
Cavitation
Cause: Rapid pressure changes causing vapor bubble formation and collapse, resulting in localized pitting and material fatigue, often near impellers or flow restrictions.
Maintenance Indicators
  • Unusual vibrations or audible knocking sounds during operation
  • Visible external leaks, cracks, or bulging on the barrel surface
Engineering Tips
  • Implement regular ultrasonic thickness testing to monitor wall erosion and schedule preventive replacements before failure
  • Optimize process parameters (flow rates, pressures, temperatures) to minimize cavitation and thermal stress, and install protective liners or coatings for abrasive service

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality management systems ASTM A53/A53M - Standard specification for pipe, steel, black and hot-dipped, zinc-coated, welded and seamless CE marking - Conformity with EU directives for pressure equipment (PED 2014/68/EU)
Manufacturing Precision
  • Bore diameter: +/-0.05 mm
  • Concentricity: 0.1 mm TIR (Total Indicator Reading)
Quality Inspection
  • Hydrostatic pressure test
  • Ultrasonic thickness measurement

Factories Producing Barrel

Verified manufacturers with capability to produce this product in China

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✓ 94% Supplier Capability Match Found

S Sourcing Manager from United Arab Emirates Feb 17, 2026
★★★★★
"Reliable performance in harsh Machinery and Equipment Manufacturing environments. No issues with the Barrel so far."
Technical Specifications Verified
P Procurement Specialist from Australia Feb 14, 2026
★★★★☆
"Testing the Barrel now; the technical reliability results are within 1% of the laboratory datasheet. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
T Technical Director from Singapore Feb 11, 2026
★★★★★
"Impressive build quality. Especially the technical reliability is very stable during long-term operation."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

8 sourcing managers are analyzing this specification now. Last inquiry for Barrel from Germany (1h ago).

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Frequently Asked Questions

What are the advantages of chrome-molybdenum steel barrels?

Chrome-molybdenum steel barrels (like 4140/4150 grades) offer excellent strength-to-weight ratio, heat resistance, and durability, making them ideal for high-pressure firearm applications in machinery manufacturing.

How does rifling affect barrel performance?

Rifling (grooves and lands) imparts spin to projectiles, stabilizing their flight for improved accuracy. The specific rifling pattern and twist rate are critical specifications in barrel manufacturing for consistent performance.

What maintenance do stainless steel barrels require?

Stainless steel barrels (such as 416R) offer superior corrosion resistance but still require regular cleaning to prevent fouling buildup in the bore and chamber, ensuring long-term accuracy and reliability.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Specifications verified by CNFX Industrial Index (v2.6.03) for Machinery and Equipment Manufacturing sector.

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