316H Stainless Steel Seamless Hydraulic & Instrumentation Tubes

High-Carbon Grade • Elevated Temperature Strength • Superior Corrosion Resistance

Manufacturers and suppliers of 316H Stainless Steel Seamless Hydraulic & Instrumentation Tubes, designed for high-temperature and high-pressure service in oil & gas, petrochemical, power generation, and process industries.

ISO 9001:2015 • ISO 14001:2015 • ISO 45001:2018 • PED 2014/68/EU • EN 10204 3.1/3.2 Certified

316H Stainless Steel Seamless Hydraulic & Instrumentation Tubes

Our 316H Stainless Steel Seamless Hydraulic & Instrumentation Tubes are engineered for high-temperature and high-pressure industrial environments where elevated mechanical strength, thermal stability, and long-term operational reliability are critical. The high-carbon 316H grade delivers improved creep resistance and enhanced tensile strength at elevated temperatures, making these tubes ideal for demanding service in petrochemical, power generation, and process industries.

The seamless, high-precision construction ensures uniform wall thickness and smooth internal surfaces, minimizing pressure losses and maintaining consistent flow performance in critical hydraulic and instrumentation systems. These tubes perform reliably under sustained heat exposure, thermal cycling, and extreme operating pressures.

Commonly used in oil & gas processing units, refineries, chemical and petrochemical plants, offshore platforms, power generation facilities, and high-temperature control and instrumentation networks, our 316H stainless steel seamless tubes are manufactured and tested to international standards to provide a durable, heat-resistant, and cost-effective solution for harsh and high-temperature operating environments.

316H Stainless Steel Seamless Hydraulic and Instrumentation Tubes

Comprehensive Global Reach

Our 316H Stainless Steel Seamless Hydraulic & Instrumentation Tubes are trusted across major industrial cities in India and throughout the Middle East, including the UAE, Saudi Arabia, Qatar, Kuwait, Oman, Bahrain, Iraq, and Jordan. These regions rely on our high-carbon, heat-resistant tubing solutions for oil & gas operations, refineries, petrochemical plants, power generation units, and large-scale infrastructure and EPC projects that demand reliable performance in high-temperature and high-pressure service environments.

In Europe, we supply Italy, Germany, Spain, the United Kingdom, France, Turkey, Greece, and Eastern European markets, where our 316H stainless steel seamless tubes are valued for their elevated-temperature strength, dimensional precision, and consistent performance in demanding hydraulic, marine, and high-temperature instrumentation applications.

Africa, Americas & Asia-Pacific

Across Africa, the Americas, and the Asia-Pacific region, our 316H Stainless Steel Seamless Hydraulic & Instrumentation Tubes support offshore platforms, marine systems, chemical and petrochemical plants, power generation facilities, and heavy manufacturing industries—delivering dependable performance in corrosive, high-pressure, and high-temperature operating conditions.

Commitment to Quality

Wherever you operate—Doha, Dubai, London, Moscow, or New York—Seminox Pipes & Tubes delivers premium-quality 316H Stainless Steel Seamless Hydraulic & Instrumentation Tubes, manufactured and certified to international standards for precision, traceability, and long-term performance in critical fluid control, heat-resistant, and instrumentation applications worldwide.

Key Features of 316H Stainless Steel Seamless Hydraulic & Instrumentation Tubes

High-Carbon Precision Seamless Manufacturing

Produced using advanced cold drawing and seamless forming processes to ensure uniform wall thickness, tight dimensional tolerances, and smooth internal surfaces for consistent fluid flow and accurate instrumentation performance.

Enhanced Elevated-Temperature Strength

The high-carbon 316H grade provides improved creep resistance and mechanical strength at elevated temperatures, making these tubes ideal for high-heat service in petrochemical, refinery, and power generation applications.

High Pressure & Mechanical Stability

Designed to withstand high internal pressures and mechanical loads, maintaining structural integrity in critical hydraulic systems, control lines, and precision fluid transfer networks.

Smooth Bore for Accurate Flow Control

Precision-finished internal surfaces reduce friction and pressure loss, enhancing flow stability and measurement accuracy in sensitive instrumentation and process control systems.

Thermal, Oxidation & Stress Corrosion Resistance

Maintains corrosion resistance and structural performance under high temperatures, cyclic pressure, and aggressive chemical and oxidizing service conditions.

Extended Service Life & Reduced Maintenance

Engineered for long-term durability, minimized downtime, and lower lifecycle costs in oil & gas processing, marine systems, chemical plants, and high-temperature industrial environments.

Product Specification – 316H Stainless Steel Seamless Hydraulic & Instrumentation Tubes

Outside Diameter
6.00 mm to 114.30 mm (1/4” to 4.5”)
Wall Thickness
0.71 mm to 12.70 mm (0.028” to 0.500”)
Grade / Material
Austenitic Stainless Steel (High Carbon)
AISI 316H
UNS S31609
EN 1.4919
Manufacturing Process
Seamless (Cold Drawn / Cold Rolled) • Solution Annealed • Pickled / Bright Annealed
Standards & Specifications
ASTM A213 / A213M – Seamless Stainless Steel Tubes (Heat Exchanger & Instrumentation)
ASTM A269 – General Service Stainless Steel Tubing
ASTM A511 – Mechanical Tubing
ASME SA213 / SA269
EN 10216-5 (Seamless Precision Tubes)
NACE MR0175 / ISO 15156 (Where Applicable, Project Specific)
Customer Drawings & EPC / Project Specifications
Length
Standard: 6 meters • Random Lengths • Up to 18 meters
Custom cut lengths as per Project / Instrumentation Requirements
Surface Finish
Annealed & Pickled (AP), Bright Annealed (BA),
Polished (180 / 240 / 320 / 400 / 600 Grit), Electropolished
Mechanical Properties (Typical)
Yield Strength: ≥ 205 MPa
Tensile Strength: 515–690 MPa
Elongation: ≥ 40%
Improved Creep Strength at Elevated Temperatures
Applications
High-Temperature Hydraulic & Instrumentation Lines,
Oil & Gas Processing & Refinery Units,
Petrochemical & Chemical Plants,
Power Generation & Boiler Systems,
Marine & Offshore Equipment,
High-Pressure & High-Heat Fluid Transfer Systems,
Aggressive & Elevated Temperature Environments

Manufacturing, Testing & Quality Assurance – 316H Stainless Steel Tubes

Advanced Manufacturing

316H Stainless Steel Seamless Hydraulic & Instrumentation Tubes are produced using precision cold drawing and cold rolling processes, followed by controlled solution annealing and pickling or bright annealing. The high-carbon composition promotes a fully austenitic, homogeneous microstructure with enhanced high-temperature strength, improved creep resistance, and excellent surface finish, ensuring tight dimensional tolerances for high-pressure and elevated-temperature hydraulic and instrumentation service applications.

Inspection & Testing

Each tube undergoes rigorous quality control including Eddy Current Testing (ECT), Hydrostatic or Pneumatic Pressure Testing, Positive Material Identification (PMI), chemical composition verification, mechanical and elevated-temperature property testing, dimensional inspection, and 100% visual examination. These procedures ensure compliance with ASTM A213 / A269 and ASME SA213 / SA269 standards for safe and reliable performance in critical hydraulic, instrumentation, and high-heat service environments.

Certifications & Compliance

Manufactured in accordance with ASTM A213, ASTM A269, ASME SA213, ASME SA269, EN 10216-5, ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, and PED 2014/68/EU directives. Tubes are supplied with EN 10204 3.1 / 3.2 Mill Test Certificates (MTC), ensuring full traceability, regulatory compliance, and acceptance for EPC, oil & gas, petrochemical, power generation, marine, and offshore projects worldwide.

Typical Applications of 316H Stainless Steel Seamless Hydraulic & Instrumentation Tubes

High-Temperature Hydraulic & Pneumatic Control Systems
Instrumentation & Process Control Lines in High-Heat Environments
Oil & Gas Processing, Refineries & Utility Piping
Petrochemical Plants & High-Temperature Process Units
Power Generation, Boilers & Turbine Control Systems
Marine, Shipbuilding & Offshore Platforms
High-Pressure & High-Temperature Fluid Transfer Systems
Chemical Processing & Heat-Resistant Piping Networks
Aggressive, Elevated-Temperature & Critical Service Environments

Need 316H Stainless Steel Seamless Hydraulic & Instrumentation Tubes for Your Project?

Partner with Seminox Pipes & Tubes for certified, project-ready 316 Stainless Steel Seamless Hydraulic & Instrumentation Tubes manufactured to international standards and supplied with EN 10204 3.1 / 3.2 MTC. Trusted worldwide for oil & gas, offshore, marine, chemical processing, power generation, and corrosive, chloride-rich service environments requiring superior corrosion resistance, high mechanical strength, and long-term operational reliability.

Get in Touch

Phone Number

022 6659 5296
+91 9987403801
+918433943801

Email

domestic@seminoxpipes.com
export@seminoxpipes.com

Address

1219 / 1220, 12th Floor, Prasad Chambers, Girgaon, Mumbai- 400004

Business Hours

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Saturday — 10am – 3pm
Sunday — Closed

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