Navgraha Steels INC supports EPC, fabricator, maintenance and procurement enquiries for petrochemical and fertilizer process equipment. Material selection depends on the exact unit, code, pressure, temperature, hydrogen exposure, process chemistry, corrosive medium, fabrication route and approved project specification. India and export enquiries are reviewed against the complete RFQ.
Petrochemical and fertilizer complexes can include reformers, reactors, converters, separators, heat exchangers, columns, scrubbers, vessels, tanks and supporting structures. Service conditions differ significantly between units and components.
Selection must account for process medium, concentration, pressure, metal temperature, hydrogen, wet-H₂S where relevant, ammonium-carbamate or other process chemistry, thermal cycling, corrosion allowance, welding, PWHT, impact toughness and inspection requirements. No one carbon steel, chrome-moly grade or nickel alloy is suitable for every ammonia, urea, methanol or petrochemical process stream.
| Equipment or Service | Main Concern | Material Route to Evaluate | Buyer Must Confirm |
|---|---|---|---|
| Approved pressure vessels, separators and process equipment | Pressure, toughness and welding | SA 516 Grade 60 or Grade 70 | Code, thickness, condition, impact requirement and MTC |
| Sour-service or wet-H₂S equipment | HIC, hardness and sour-service controls | SA 516 Grade 70 HIC or NACE pathway | Exact standard, test method, acceptance criteria and documentation |
| Reformers and elevated-temperature pressure equipment | Temperature, creep, PWHT and fabrication | SA 387 Grade 11, 12, 22 or 91 Class 2; 16Mo3 where specified | Design temperature, code, heat treatment and inspection |
| Selected corrosive process equipment | Chemical compatibility and localised corrosion | Hastelloy C276, C22, Inconel 625, Alloy 825 or Monel 400 where justified | Process medium, concentration, contaminants and approval |
| Supports and non-pressure fabrication | Structural load and environment | ASTM A36 or S275JR where suitable | Design code, coating, load case and exposure |
SA 516 grades may be evaluated for approved pressure vessels, separators, columns, heat-exchanger shells, tanks and process equipment where the applicable code and service conditions support their use. Base material does not automatically qualify for sour service, HIC testing, NACE/AMPP controls or every hydrogen-containing duty.
Chrome-moly routes may be considered for specified reformer, reactor, heat-exchanger and elevated-temperature pressure-equipment requirements. Grade 11, Grade 12, Grade 22, Grade 91 and 16Mo3 have different composition, heat-treatment, creep and fabrication considerations. They are not direct equivalents and should not be substituted without engineering review.
Nickel-alloy materials may be evaluated for selected acid coolers, scrubbers, corrosive process vessels, heat exchangers and other components where the actual process stream supports their use. Ammonia, urea, methanol and fertilizer facilities do not have one universal corrosion mechanism. The chemical, concentration, water content, contaminants, temperature, velocity, equipment geometry and fabrication condition matter.
Petrochemical and fertilizer projects may require documentation beyond a standard MTC. State the complete requirement in the RFQ before ordering.
Navgraha Steels INC reviews available stock and Indian or imported sourcing options against the requested grade, form, dimensions, quantity, certificate and project conditions. Confirm the actual mill, origin and supporting documents in the quotation and against the MTC.
Subject to specification and commercial feasibility, support may include plates, sheets and coils; cut-to-size, profiling, shearing, slitting, edge preparation, agreed marking and traceability. Documentation review, TPI coordination, transport, export logistics, packing and shipping documents can be arranged within the accepted scope.
Small, bulk and project enquiries are reviewed subject to availability and mill programme. Urgent dispatch requires confirmed material, documents, processing, payment and destination.
For Mumbai, India and export supply, provide delivery city, country or port, quantity, required date, Incoterm, packing and inspection-release conditions. Freight, documents and shipment planning depend on the confirmed order and destination.
Petrochemical and fertilizer material prices depend on grade, specification, form, dimensions, quantity, delivery condition, mill or origin, testing, documentation, processing, packing, freight, currency and destination.
Send your material requisition, equipment name, code, grade, dimensions, quantity, process medium, temperature, pressure, test requirements, approved-mill requirement and destination. Navgraha Steels INC will review applicable material, sourcing options, documentation, processing and commercial terms.
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