Nascent Fittings Inc.·Carbon Steel
Carbon Steel OD CAP
Instrumentation & process tube fittings in SS and alloys. Compression elbows, tees & unions with MTCs and worldwide project supply.

- Material
- Carbon Steel
- Size
- Common tube OD ranges
- Standard
- ASME B31.3
- Corrosion
- Moderate
About
Carbon Steel Tube Fittings
Product overview combined with Carbon Steel material context for project selection.
Tube fittings for instrumentation, hydraulic and process tubing connections. Nascent supplies compression, bite-type and related tube fittings in stainless steel and compatible alloys for leak-tight joints under vibration and pressure cycling.
Available in elbows, tees, unions, connectors and adapters sized to common tube OD standards, with material certificates for oil & gas, chemical and utility systems.
Manufacturing note
Nascent is an expert in manufacturing tubes and Closures of different sizes and shapes with varied parts. These closures are prepared with the help of advanced technology and skilled workforce to ensure better enhancement of work. Tube End Closure is a Plug with end having Blind Plug to Plug open end of Tube Fitting Port. Our product is fabricated by using superior-quality raw materials procured from the market’s leading supplier. All work is performed under the supervision of experienced professionals and experts in accordance with established industry norms and standards. It comprises three precision engineered components as Plug, Nut & Circlip. It is used for attaining High Pressure Leak Proof Joint to Plug Tube Fitting’s open Tube Port. Nascent provides these closures as standard form and as per specifications provided by the customers at reasonable rates. High Pressure Leak Proof Joints are possible without using Welding, using only wrench or spanners. Suitable for High Pressure Gases, Liquids & Vacuum. In order to gain excellency in the product, state-of-the-art machinery and equipment are used. Double Ferrule design for stringent applications as Impulse, Vibration, High pressure gases, Vacuum etc Silver Plating on Nuts to avoid galling. Tube End Closure has a unique three-piece design having a body, with a hardened ferrule and nut. Unlike traditional compression joints, this nut is screwed on to the body. Nascent fitting is a renowned and leading company that Manufactures and Exports superior quality Tube Caps (Tube End Closures) to both domestic and international customers.
Typical applications
- Oil & Gas
- Petrochemical
- Chemical Processing
- Power Generation
- Refineries
- Pressure Vessels
Configurations
Carbon Steel Tube Fittings types
Open a type for drawings-aligned specifications.

Carbon Steel AIR HEADER MANIFOLDS

Carbon Steel BALL VALVE

Carbon Steel BRANCH TEE

Carbon Steel BULK HEAD UNION

Carbon Steel CHECK VALVE

Carbon Steel CONDENSATE POT

Carbon Steel FEMALE CONNECTOR

Carbon Steel FEMALE TEE

Carbon Steel HOSE CONNECTIONS

Carbon Steel MALE CONNECTOR

Carbon Steel MANIFOLDS VALVE

Carbon Steel NEEDLE VALVE

Carbon Steel OD CAP

Carbon Steel OD PLUG

Carbon Steel REDUCING UNION

Carbon Steel RUN TEE
Material scope
Carbon Steel specification
Dimensional and grade range typically supplied for OD CAP in this material.
- Grade
- ASTM/ASME A/SA A105, LF2
- Grade
- ASTM/ASME A/SA F11, F22, F91 F12, F5, F9,
Carbon Steel grades
Available grades for Tube Fittings
Drawn from the Carbon Steel catalog and this product’s material specification.
ASTM A105
Standard carbon steel forging grade for ambient and higher temperature service.
Best for · General piping applications
F42
High-strength carbon steel for pipeline systems.
Best for · Pipeline transmission systems
F46
Carbon steel grade for pressure transmission service.
Best for · Pipeline applications
F52
Medium-high strength carbon steel grade.
Best for · High-pressure piping
F56
Enhanced strength carbon steel grade.
Best for · Transmission pipelines
F60
High-strength carbon steel for critical pressure systems.
Best for · Pressure transmission systems
F65
Premium carbon steel grade for high-performance piping systems.
Best for · Critical pipeline infrastructure
F70
Highest strength ASTM A694 carbon steel grade.
Best for · Long-distance transmission pipelines
ASTM A234 WPB
Standard carbon steel buttweld fitting grade for moderate and elevated temperature service.
Best for · General buttweld piping
P235TR2
EN carbon steel grade for welded tubes for pressure purposes with specified elevated temperature properties.
Best for · Pressure tubing
P265TR2
Higher-strength EN carbon steel for welded pressure tubes.
Best for · Higher pressure tube service
P235GH
EN non-alloy steel for elevated temperature pressure vessels and pipe.
Best for · Elevated temperature pressure service
Also available in
Other materials for this product
View Tube Fittings in another material grade family.
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ViewCompliance
Standards & certificates
Specifications and documentation typically referenced for this product line — details from our shared compliance catalog.
Standards
3ASME B31.3
ASMEProcess piping design code.
- Scope
- Design, materials, fabrication, assembly, erection, examination, inspection and testing of process piping.
- Applies To
- Petroleum, chemical, pharmaceutical, textile, paper, semiconductor and related process plants
ASTM A105
ASTMCarbon steel forgings for piping applications.
- Scope
- Forged carbon steel piping components for ambient and higher-temperature service.
- Applies To
- Flanges, fittings, valves and similar parts
- Typical Grades
- A105 / A105N
ASTM A694
ASTMCarbon and alloy steel forgings for pipe flanges, fittings, valves and parts for high-pressure transmission service.
- Scope
- High-strength carbon steel forgings for pipeline transmission flanges and fittings.
- Applies To
- Flanges and forged fittings for high-pressure gas/oil transmission
Certificates
5EN 10204 3.1
Mill test certificate with inspection by the manufacturer’s authorized inspection representative, independent of manufacturing.
- Type
- Inspection document (MTC)
- Scope
- States chemical analysis, mechanical test results and heat / lot identification for the supplied material.
- Documentation
- EN 10204 Type 3.1
- Benefit
- Provides traceable material evidence required on most industrial RFQs.
ISO 9001
Quality Management System certification.
- Type
- Quality Management System
- Scope
- Demonstrates a documented QMS covering process control, traceability and continual improvement across manufacturing and supply.
- Benefit
- Assures buyers of consistent product quality and controlled production practices.
- Issued As
- Third-party accredited certificate
PED
Pressure Equipment Directive compliance for equipment placed on the EU market.
- Type
- Regulatory conformity
- Scope
- Design and conformity assessment requirements for pressure equipment and assemblies in the European Union.
- Benefit
- Enables supply of pressure-rated components into EU projects when PED conformity is required.
- Related
- CE marking / Notified Body routes as applicable
IBR
Indian Boiler Regulations approval for boiler-quality piping materials and components.
- Type
- Regulatory approval
- Scope
- Materials and components intended for use under Indian boiler installations.
- Benefit
- Required for many power and process projects under IBR jurisdiction in India.
NACE MR0175
Materials for use in H₂S-containing environments in oil and gas production.
- Type
- Service / sour-service requirement
- Scope
- Limits hardness, microstructure and material selection for sulfide stress cracking resistance.
- Applies To
- Carbon, alloy and CRA piping products ordered for sour service
- Benefit
- Supports upstream oil & gas projects specifying sour-service compliance.
People also ask
Questions about Tube Fittings
Nascent Fittings Inc. answers common buyer questions for this line.
Does Nascent Fittings Inc. manufacture Tube Fittings?+
Yes. Nascent Fittings Inc. manufactures and supplies Tube Fittings for industrial piping projects, with material grades and sizes aligned to project specifications.
Can Nascent Fittings Inc. export Tube Fittings worldwide?+
Yes. We export Tube Fittings globally with standard export packaging, material test certificates, and documentation support for international shipments.
What materials are available for Tube Fittings?+
Tube Fittings is available in carbon steel, alloy steel, stainless steel, duplex, nickel alloys, copper alloys, aluminium, titanium and other project-specific materials as required.
Need pricing for Carbon Steel OD CAP?
Share sizes, material grade and quantity — manufacturing options and delivery timelines follow.







