Introduction
Roben Manufacturing fabricates stainless steel api tanks for operators who need API 650 or API 620 storage tanks built from stainless steel for chemical compatibility, weight, cost, or regulatory reasons. Our shop maintains qualified welding procedures, certified welders, and full inspection capability for stainless steel construction.
What Is Stainless Steel API Tanks?
Stainless Steel API Tanks are API-standard storage tanks fabricated from stainless steel to take advantage of the alloy's specific properties — corrosion resistance, weight, temperature performance, or cost. Roben's stainless steel api tanks carry the same API certification, ASME documentation, and National Board registration as our standard fabrications.
Why You Need Stainless Steel API Tanks
- Material Compatibility: Stainless steel construction matched to the specific chemistry and operating conditions of your product service.
- Code-Stamped Construction: ASME Section VIII and API standards apply equally to all material grades — full traceability and documentation included.
- Service Life Optimization: Stainless steel selection minimizes corrosion, scaling, and material loss over decades of operation.
- Total Cost of Ownership: Higher-grade materials often deliver lower total cost when corrosion allowance, coatings, and replacement intervals are factored in.
- Qualified Fabrication: Roben's qualified welding procedures and PQRs cover stainless steel construction with full NDE documentation.
Specifications and Technical Characteristics
- Material Grades: 304, 304L, 316, 316L, 317L, 321, 904L, duplex 2205, super duplex 2507
- Welding Process: GTAW (TIG), GMAW (MIG), SMAW per qualified WPS/PQR
- Filler Metal: Matched or overmatched per ASME Section IX requirements
- Surface Finish: Mill finish, brushed, electropolished (for stainless), or coated per service
- NDE: RT, UT, MT, PT, and PMI testing per project specification
- Heat Treatment: Post-weld heat treatment (PWHT) where required by code or service
- Documentation: Material test reports (MTRs), WPS/PQR, NDE reports, U-1A/U-1B forms
Industries Served
- Oil and Gas
- Petrochemical
- Refining
- Chemical Processing
- Biofuels
- Power Generation
- Water Treatment
- Mining
Certifications and Standards
Roben Manufacturing fabricates this product line under the following industry standards and certifications:
- ASME Section VIII Division 1 and Division 2 — "U" and "U2" Stamps
- National Board "R" Stamp for repairs and alterations
- API 650 (Welded Tanks for Oil Storage) where applicable
- API 620 (Low-Pressure Storage Tank Design) where applicable
- API 653 (Tank Inspection, Repair, Alteration, and Reconstruction)
- PED (Pressure Equipment Directive) for European market
- CRN (Canadian Registration Number) for all Canadian provinces
- NFPA 30 (Flammable and Combustible Liquids Code)
- EPA Spill Prevention, Control, and Countermeasure (SPCC) compliance
Frequently Asked Questions
Roben Manufacturing brings over 50 years of pressure vessel and tank fabrication experience, full ASME and National Board certification, and complete in-house engineering. Each stainless steel api tanks is custom-engineered to meet your exact service conditions, regulatory requirements, and capacity needs — no off-the-shelf approximations.
Roben fabricates stainless steel api tanks in capacities ranging from a few hundred gallons to several million gallons, with diameters up to 60 feet and heights customized to site constraints. Our shop can produce shop-fabricated tanks for transport or coordinate field-erected fabrication for the largest capacities.
Lead time depends on size, materials, certifications required, and current shop loading. Roben Manufacturing offers competitive turnaround through dedicated project management and a fully integrated fabrication facility. Contact our engineering team for a project-specific schedule based on your scope.
Yes. Roben fabricates stainless steel api tanks in carbon steel, stainless steel, duplex, super duplex, Hastelloy, Inconel, and other specialty alloys. We also provide internal linings, cladding, and external coatings engineered for aggressive chemical, high-temperature, and cryogenic service.
Yes. Roben holds ASME "U" and "U2" Stamps and National Board "R" Stamp authorization for repairs and alterations, plus full API 653 capability for tank inspection, repair, and reconstruction. Our team supports installation oversight, hydrotest, NDE, and turnkey commissioning.
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Contact Roben Mfg., Inc. to discuss your project specifications, timeline, and material requirements.
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