DNV Approved Stainless Steel Seamless Pipe

We supply stainless steel seamless pipes and tubes for marine and offshore applications with DNV certification support, full material traceability, and reliable inspection documentation.

What Is DNV Certification?

DNV is one of the world's leading classification societies for the marine and offshore industries. DNV certification helps ensure that materials and products meet applicable technical, safety, and quality requirements for shipbuilding, offshore engineering, and marine piping systems.

Our stainless steel seamless pipes and tubes can be supplied for DNV-class projects with relevant inspection documents and material certificates according to customer and project requirements.

DNV Certificate:

Below is our DNV-related certificate information for stainless steel seamless pipes and tubes used in marine and offshore applications.

Certificate Name: DNV Approval / DNV Certificate

Issued By: DNV

Product Scope: Stainless Steel Seamless Pipes and Tubes

Application: Marine and Offshore Projects

Document Support: Available upon request

Products Covered by DNV Certification:

We offer a wide range of stainless steel seamless pipes and tubes suitable for DNV-class shipbuilding and offshore projects. Different grades, standards, and dimensions can be supplied according to application and technical requirements.

Product	Grade	Standard	Size Range	Typical Application
Stainless Steel Seamless Pipe	316L	ASTM A312/EN 10216-5	Custom sizes available	Marine piping systems
Stainless Steel Seamless Tube	316L/321	ASTM A269/ASTM A213	Custom sizes available	Instrumentation and heat exchange
Duplex Seamless Pipe	2205	ASTM A790	Custom sizes available	Seawater and offshore systems
Super Duplex Seamless Pipe	2507	ASTM A790	Custom sizes available	High-corrosion marine environments

Available Grades:

304 / 304L
316 / 316L
321
317L
Duplex 2205
Super Duplex 2507

Standards Available

ASTM A312
ASTM A269
ASTM A213
ASTM A790
EN 10216-5
DIN / JIS standards available upon request

Typical Marine Applications

Seawater cooling systems
Ballast water piping
Marine process piping
Offshore platform piping
Hydraulic systems
Instrumentation tubing
Heat exchanger tubing

Quality Control and Inspection

To support the requirements of DNV-class marine and offshore projects, our stainless steel seamless pipes and tubes are supplied with strict quality control, inspection procedures, and full traceability throughout production and shipment.

Chemical composition analysis
Mechanical property testing
PMI testing
Hydrostatic testing
Dimensional inspection
Surface inspection
UT / ET / other NDT as required
Heat number traceability

Why Choose Us?

Stainless steel seamless pipe specialist
Support for marine and offshore projects
DNV certification support upon request
Full material traceability
Wide range of grades and standards
Reliable export packing and delivery
Fast response to technical and commercial inquiries