Stainless Steel Compression Fittings

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Stainless Steel Compression Fittings – Premium Quality Tube & Pipe Fittings

We are one of the leading manufacturers and exporters of Stainless Steel Compression Fittings from India. We have been supplying high-quality compression fittings to the world market for 3 decades. Our extensive range includes Stainless Steel 316 Compression Fittings, Single Ferrule Compression Fittings, and Double Ferrule Compression Fittings designed for critical applications across various industries. As an ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 certified manufacturer, we ensure exceptional quality, precision engineering, and reliable performance in every product. Our state-of-the-art manufacturing facilities in India combine advanced CNC machining technology with stringent quality control processes to deliver compression fittings that meet international standards including ASTM, DIN, JIS, and BS specifications. With over three decades of global experience, we have established ourselves as a trusted partner for industries requiring high-pressure, leak-proof connections in demanding environments. Our technical expertise, competitive pricing, and commitment to customer satisfaction have made us the preferred choice for clients worldwide seeking reliable Stainless Steel compression fitting solutions.

Comprehensive Range of Stainless Steel Compression Fittings

Stainless Steel Compression Fittings – General Purpose

Our standard Stainless Steel Compression Fittings are engineered for versatile applications requiring reliable tube-to-tube connections. These fittings utilize a compression mechanism that creates a leak-tight seal by compressing a ferrule against the tube when the nut is tightened. Available in grades SS 304 and SS 316, these fittings offer excellent corrosion resistance and mechanical strength. The compression design eliminates the need for welding or threading, making installation quick and straightforward. These fittings are ideal for instrumentation lines, process piping, and general industrial applications where moderate pressures and temperatures are encountered. The precision-machined components ensure consistent performance and long service life even under demanding operating conditions.

Stainless Steel 316 Compression Fittings – Superior Corrosion Resistance

Stainless Steel 316 Compression Fittings represent the premium choice for applications requiring exceptional corrosion resistance and durability. The 316 grade contains molybdenum, which significantly enhances resistance to chloride corrosion, making these fittings ideal for marine environments, chemical processing, and pharmaceutical applications. These fittings demonstrate superior performance in acidic and alkaline environments, maintaining structural integrity under extreme conditions. The austenitic microstructure provides excellent mechanical properties, including high tensile strength and impact resistance. Our SS 316 compression fittings are manufactured to strict tolerances ensuring optimal sealing performance and are available in both L-grade (low carbon) and standard configurations to meet specific application requirements.

Stainless Steel Single Ferrule Compression Fittings – Simplified Design

Stainless Steel Single Ferrule Compression Fittings feature a streamlined design utilizing a single ferrule component to create an effective seal. This configuration is particularly suitable for applications where ease of assembly and disassembly is crucial. The single ferrule design reduces the number of components, minimizing potential leak paths and simplifying maintenance procedures. These fittings are engineered with precision-machined sealing surfaces that ensure reliable performance across a wide range of pressures and temperatures. The single ferrule system provides consistent bite into the tube wall, creating a permanent connection that maintains integrity throughout numerous pressure cycles. Ideal for instrumentation applications, analytical systems, and process lines requiring frequent disconnection for maintenance or calibration.

Stainless Steel Double Ferrule Compression Fittings – Enhanced Sealing Performance

Stainless Steel Double Ferrule Compression Fittings incorporate an advanced two-ferrule design that provides superior sealing performance and tube gripping capability. The front ferrule creates the primary seal while the back ferrule provides tube support and additional gripping action. This dual-ferrule system distributes stress more evenly along the tube, reducing the risk of tube deformation or cracking. The progressive tightening action ensures optimal seal formation without over-stressing the tube material. These fittings are engineered for high-pressure applications and environments where vibration resistance is critical. The double ferrule configuration allows for partial disassembly and reassembly while maintaining seal integrity, making them ideal for systems requiring periodic maintenance access.

Material Grades & International Standards

Standard/Region	Grade Designation	Equivalent Materials	Key Properties
ASTM (USA)	ASTM A276 Grade 304/316	UNS S30400, UNS S31600	High strength, corrosion resistant
DIN (Europe)	DIN 1.4301, DIN 1.4401	X5CrNi18-10, X5CrNiMo17-12-2	European automotive standards
JIS (Japan)	JIS SUS304, SUS316	SUS304L, SUS316L	Low carbon variants available
BS (British)	BS 304S15, BS 316S31	304S11, 316S11	British standard specifications
IS (India)	IS 1570 Grade 304, 316	304, 316, 316L, 316Ti	Indian standard specifications
GB (China)	GB 0Cr18Ni9, 0Cr17Ni12Mo2	304, 316, 321, 310S	Chinese national standards

Material Properties & Performance Characteristics

Property	SS 304	SS 316	SS 316L	Test Standard
Tensile Strength (MPa)	515-620	515-620	485-620	ASTM A370
Yield Strength (MPa)	205 min	205 min	170 min	ASTM A370
Elongation (%)	40 min	40 min	40 min	ASTM A370
Hardness (HRB)	92 max	95 max	95 max	ASTM E18
Operating Temperature	-196°C to +400°C	-196°C to +400°C	-196°C to +400°C	ASTM A240
Pressure Rating	Up to 6000 PSI	Up to 6000 PSI	Up to 6000 PSI	ASME B31.3

Manufacturing Processes & Advanced Machinery

Our state-of-the-art manufacturing facility employs advanced precision machining technologies to produce high-quality Stainless Steel Compression Fittings. The manufacturing process begins with careful material selection and inspection, followed by precision machining operations using cutting-edge equipment.

CNC Machining Centers

Multi-axis CNC machines for precision component manufacturing with tolerances up to ±0.05mm

Swiss-Type Lathes

High-precision turning operations for complex geometries and tight tolerances

Cold Heading Machines

Advanced cold forming for enhanced grain structure and improved mechanical properties

Thread Rolling Equipment

Precision thread rolling for superior thread quality and fatigue resistance

Heat Treatment Furnaces

Controlled atmosphere furnaces for stress relief and property enhancement

Surface Finishing Systems

Electropolishing and passivation equipment for enhanced corrosion resistance

Typical Parts Produced & Product Range

Product Category	Part Description	Size Range	Pressure Rating	Applications
Straight Unions	Tube-to-tube connections	1/16″ to 2″ OD	Up to 6000 PSI	Process lines, instrumentation
Male Connectors	Tube-to-pipe connections	2mm to 50mm OD	Up to 6000 PSI	System integration, piping
Female Connectors	Tube-to-threaded connections	1/8″ to 1″ NPT	Up to 6000 PSI	Equipment connections
Union Elbows	90° directional changes	1/16″ to 1″ OD	Up to 6000 PSI	Space-constrained installations
Union Tees	Three-way connections	1/8″ to 3/4″ OD	Up to 6000 PSI	Branching, sampling lines
Reducing Unions	Size transition fittings	Various combinations	Up to 6000 PSI	System size changes
Bulkhead Unions	Panel mount connections	1/8″ to 1/2″ OD	Up to 6000 PSI	Equipment panels, enclosures

Dimensional Specifications & Technical Drawing

Standard Dimensional Chart – Female Connector (FCC) Series

The following table provides detailed dimensions for our standard female connector compression fittings. All dimensions are in millimeters unless otherwise specified.

Tube O.D.	Pipe Size	Part No.	A (Length)	B (Hex)	D (Body Dia)	E (Thread Length)	F (Thread Dia)	G (Nut Dia)	H (Overall)
1/8″	1/8″ NPT	FCC-01-1	28.7	12	12.7	2	14	10	22.1
1/4″	1/4″ NPT	FCC-02-2	35.8	15	15.3	5	17	14	28.4
3/8″	3/8″ NPT	FCC-03-3	39.1	15	16.8	8	22	19	31.8
1/2″	1/2″ NPT	FCC-04-4	46.7	20	22.8	10	27	22	36.6
6mm	1/4″ PT	FCC-6-2	35.8	15	15.3	5	17	14	28.4
8mm	1/4″ PT	FCC-8-2	37.0	15	16.2	6	17	17	29.5
10mm	3/8″ PT	FCC-10-3	39.4	15	17.2	8	22	19	31.8
12mm	1/2″ PT	FCC-12-4	46.7	20	22.8	10	27	22	36.6

Surface Treatments & Finishes

Our Stainless Steel Compression Fittings are available with various surface treatments designed to enhance performance and aesthetic appeal. The standard finish includes precision machining followed by deburring and cleaning. Additional surface treatments are available based on specific application requirements.

Electropolishing

Enhanced corrosion resistance and smooth surface finish. Ra values less than 0.4 μm achievable. Ideal for pharmaceutical and food processing applications.

Passivation

Chemical treatment per ASTM A967 to remove free iron and enhance natural corrosion resistance. Standard process for all Stainless Steel grades.

Mechanical Polishing

Progressive abrasive finishing for improved surface quality. Various grit levels available from 120 to 600 grit finish.

Pickling & Descaling

Acid treatment to remove heat treatment scale and surface contamination. Provides uniform surface appearance and enhanced corrosion resistance.

Industries & Applications

Our Stainless Steel Compression Fittings serve critical applications across diverse industries where reliability, corrosion resistance, and precision are paramount. The superior performance characteristics make them suitable for demanding environments requiring leak-tight connections.

Pharmaceutical Industry

Process piping, clean utilities, WFI systems, sterile gas distribution

Chemical Processing

Corrosive media handling, reactor piping, sampling systems, analytical lines

Food & Beverage

Sanitary piping, CIP systems, beverage processing, dairy equipment

Oil & Gas

Instrumentation tubing, control systems, offshore platforms, refineries

Power Generation

Nuclear power plants, thermal stations, cooling systems, steam lines

Aerospace

Hydraulic systems, fuel lines, environmental control, test equipment

Marine Applications

Seawater systems, offshore platforms, naval vessels, marine electronics

Semiconductor

Ultra-high purity gas systems, chemical delivery, wafer fabrication

Precision Tolerances & Quality Standards

Parameter	Standard Tolerance	Precision Tolerance	Measurement Method
Thread Accuracy	Class 2A/2B	Class 3A/3B	Go/No-Go gauges, CMM
Surface Roughness	Ra 1.6 μm	Ra 0.8 μm	Profilometer measurement
Dimensional Accuracy	±0.1mm	±0.05mm	Coordinate measuring machine
Concentricity	0.1mm TIR	0.05mm TIR	Runout measurement
Straightness	0.05mm/100mm	0.02mm/100mm	Straightness gauge

Turnaround Time & Production Capacity

Standard Production Timeline: 4-6 weeks from order confirmation for standard sizes and configurations. Our efficient production planning and inventory management ensure reliable delivery schedules for both standard and custom requirements.

Our manufacturing facility operates with optimized production schedules to meet diverse customer requirements. Standard Stainless Steel Compression Fittings in common sizes are typically maintained in inventory for immediate shipment. Custom configurations and special alloy requirements follow our standard 4-6 week production cycle, which includes material procurement, precision machining, quality inspection, and final packaging.

Express Production

Rush orders available with 2-3 week delivery for urgent requirements. Additional charges apply for expedited processing.

Inventory Management

Consignment inventory programs available for high-volume customers to ensure immediate availability of critical components.

Custom Manufacturing

Special alloys, non-standard dimensions, and custom configurations available with extended lead times of 6-8 weeks.

Performance Metrics & Testing Standards

Test Parameter	Test Standard	Acceptance Criteria	Test Frequency
Hydrostatic Pressure Test	ASME B31.3	1.5 × Working Pressure	100% of production
Leak Test	ASTM F1387	Zero leakage at rated pressure	Sample testing
Material Composition	ASTM E415	Per ASTM A276 requirements	Per heat/lot
Hardness Testing	ASTM E18	As per material specification	Sample testing
Dimensional Inspection	ISO 9001 procedures	Within specified tolerances	100% inspection
Surface Finish	ISO 4287	As specified on drawings	Sample testing

Comprehensive Technical Q&A Session

Frequently Asked Technical Questions

Q1: What is the maximum operating pressure for Stainless Steel 316 Compression Fittings?
A: Our SS 316 compression fittings are rated for up to 6000 PSI working pressure at room temperature. Operating pressure decreases with increasing temperature according to ASME B31.3 guidelines.

Q2: Can these fittings be used with different tube materials?
A: Yes, our compression fittings are compatible with Stainless Steel, Copper, Aluminum, and plastic tubing. However, for optimal performance and corrosion resistance, we recommend using Stainless Steel tubing with Stainless Steel fittings.

Q3: What is the difference between single ferrule and double ferrule compression fittings?
A: Single ferrule fittings use one ferrule component for sealing and gripping, making them easier to assemble/disassemble. Double ferrule fittings provide superior sealing performance and tube support through front and back ferrule action, ideal for high-pressure applications.

Q4: Are these fittings suitable for vacuum applications?
A: Yes, our compression fittings perform excellently in vacuum applications down to 10⁻⁶ Torr when properly installed. The compression seal mechanism provides reliable leak-tight performance across the entire pressure spectrum.

Q5: What thread standards are available?
A: We manufacture fittings with NPT, BSP, BSPT, UNF, ISO metric, and SAE thread standards. Custom thread specifications can be accommodated based on customer requirements.

Q6: How do I determine the correct fitting size for my application?
A: Fitting size is determined by tube outside diameter (OD) and desired thread connection. Our technical team can assist with proper sizing based on your specific application requirements including pressure, temperature, and media compatibility.

Q7: What is the temperature range for these compression fittings?
A: Operating temperature range is -196°C to +400°C for standard grades. Special high-temperature alloys can extend this range for specific applications requiring elevated temperature service.

Q8: Can compression fittings be reused after disconnection?
A: Single ferrule fittings can typically be reused multiple times if properly disconnected. Double ferrule fittings have limited reusability as the ferrules permanently deform during initial installation for optimal sealing.

Q9: What corrosion resistance can I expect from SS 316 fittings?
A: SS 316 provides excellent corrosion resistance in most environments including chloride-containing media, acids, and alkaline solutions. The molybdenum content significantly enhances resistance compared to SS 304.

Q10: Are these fittings suitable for food and pharmaceutical applications?
A: Yes, our fittings meet FDA requirements for food contact applications and USP Class VI standards for pharmaceutical use. Electropolished finishes are available for enhanced cleanability and biocompatibility.

Q11: What quality certifications do you provide?
A: We provide material test certificates (MTC), dimensional inspection reports, pressure test certificates, and traceability documentation. Third-party inspection and testing services are available upon request.

Q12: How tight should compression fittings be installed?
A: Follow the “finger-tight plus turns” method: hand-tighten until snug, then use wrench to turn additional 1-1/4 turns for tube sizes up to 1/2″, and 1-1/2 turns for larger sizes. Over-tightening can damage components.

Q13: Can you manufacture custom compression fitting designs?
A: Yes, we specialize in custom compression fitting manufacturing including special alloys, non-standard dimensions, unique port configurations, and application-specific designs. Our engineering team works closely with customers on custom solutions.

Q14: What is the minimum order quantity for standard fittings?
A: Standard minimum order quantities range from 10-100 pieces depending on size and configuration. We accommodate small quantity orders for prototyping and can provide quotes for any quantity requirement.

Q15: Do you provide technical support for fitting selection and installation?
A: Our experienced technical team provides comprehensive application support including fitting selection, installation guidance, troubleshooting assistance, and system design consultation to ensure optimal performance in your specific application.

Why Choose Our Stainless Steel Compression Fittings

Three Decades of Global Experience

With over 30 years of manufacturing excellence, we have supplied compression fittings to customers in more than 50 countries. Our extensive experience translates to superior product knowledge and reliable quality.

Faster Turnaround Times

Our streamlined production processes and efficient inventory management enable us to deliver standard products in 2-3 weeks and custom solutions in 4-6 weeks, significantly faster than industry averages.

Superior Customer Communication

Our multilingual technical team provides prompt responses to inquiries, detailed technical documentation, and proactive project updates. Regular communication ensures smooth project execution and customer satisfaction.

Customization Flexibility

We excel at developing custom solutions including special alloys, unique dimensions, modified configurations, and application-specific designs. Our engineering team collaborates closely with customers to meet exact requirements.

Competitive Pricing

As a direct manufacturer, we offer competitive pricing without compromising quality. Volume discounts and long-term partnership arrangements provide additional cost benefits for regular customers.

Comprehensive Quality Assurance

Our ISO 9001:2015 certified quality management system ensures consistent product quality. Every fitting undergoes rigorous inspection and testing before shipment with complete documentation provided.

Flexibility in Production & Customized Packaging

Our manufacturing facility is designed for maximum flexibility to accommodate diverse customer requirements. We understand that each application has unique demands, and our production systems are configured to handle both standard and custom requirements efficiently.

Production Flexibility

Rapid changeover capabilities, small batch production, prototype development, and scalable manufacturing volumes

Custom Packaging

Customer-labeled boxes, custom part numbering, specialized packaging for sensitive components

Branding Options

Private labeling, customer logos, custom markings, and part identification systems

Special Requirements

Clean room packaging, nitrogen purged containers, anti-static packaging, custom documentation

Customer Testimonials

“We have been sourcing Stainless Steel compression fittings from this manufacturer for over 15 years for our pharmaceutical manufacturing facilities. Their SS 316L fittings consistently meet our stringent quality requirements and provide reliable performance in our clean utility systems. The technical support team is exceptional, always available to help with complex applications and custom requirements. Their attention to documentation and traceability has been crucial for our regulatory compliance.”

– Nancy Mitchell, Senior Engineering Manager, Major Pharmaceutical Company, USA

“As a leading chemical processing company in Europe, we require compression fittings that can withstand aggressive chemical environments. These Indian-manufactured SS 316 compression fittings have exceeded our expectations in terms of corrosion resistance and longevity. The double ferrule design provides excellent sealing performance even in high-vibration applications. Their competitive pricing and reliable delivery schedules have made them our preferred supplier for the past decade.”

– Dr. James Thompson, Procurement Director, Chemical Processing Company, United Kingdom

Packaging & Shipping Excellence

Our comprehensive packaging and shipping procedures ensure that Stainless Steel Compression Fittings reach customers in perfect condition regardless of destination. We employ industry-best practices for protection, identification, and documentation to meet international shipping requirements.

Packaging Type	Application	Protection Level	Identification
Individual Poly Bags	Small quantities, samples	Basic protection, anti-static	Part number labels
Cardboard Boxes	Standard shipments	Cushioned, moisture protection	Detailed packing lists
Wooden Crates	Large orders, export	Maximum protection, fumigated	International shipping marks
Clean Room Packaging	Pharmaceutical, semiconductor	Contamination-free environment	Lot traceability codes

Glossary of Technical Terms

Compression Fitting: A type of fitting that creates a leak-tight seal by compressing a ferrule against tubing when the fitting nut is tightened.

Ferrule: A metallic component that deforms during installation to create both seal and grip on the tube. Available in single or double configurations.

Working Pressure: The maximum pressure at which a fitting can operate continuously under normal conditions at specified temperature.

Burst Pressure: The pressure at which a fitting will fail catastrophically, typically 4 times the working pressure for safety margin.

Thread Engagement: The number of complete threads that mate between male and female threaded components, critical for pressure rating.

Tube Preparation: The process of cutting, deburring, and cleaning tube ends to ensure proper fitting installation and sealing performance.

Related Parts: Stainless Steel tube fittings, SS pipe fittings, Instrumentation fittings, High pressure fittings, Sanitary fittings, Quick connect fittings, Push-to-connect fittings, Threaded fittings, Welded fittings, Flare fittings, Bite-type fittings, Tube unions, Pipe unions, Reducing fittings, Elbow fittings, Tee fittings, Cross fittings, Bulkhead fittings, Panel mount fittings, Male connectors, Female connectors, Straight unions, Union elbows, Union tees, Reducing unions, Tube adapters, Pipe adapters, End caps, Plugs, Valves, Regulators, Gauges, Pressure relief devices

ISO Certifications & Quality Assurance

ISO 9001:2015

Quality Management System certification ensuring consistent product quality and customer satisfaction

ISO 14001:2015

Environmental Management System demonstrating our commitment to sustainable manufacturing practices

ISO 45001:2018

Occupational Health and Safety Management System ensuring safe working conditions for all employees

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Standard Response Time: 24 Hours | Sample Availability: 3-5 Days | Production Lead Time: 4-6 Weeks