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RTI engineering knowledge centre

RTI Engineering Knowledge Centre

The RTI engineering knowledge centre is built as a controlled industrial reference platform, not a blog feed. It explains flange and fitting standards, material-selection decisions, PMI, EN 10204 3.1, NACE MR0175 / ISO 15156, pipe schedule, NPS versus OD, traceability, and procurement implications while keeping final acceptance tied to project specifications, certificates, and engineering review.

Guide library

Standards, documentation, dimensions, and material decisions in one controlled system.

Standards intelligence

4 controlled guides

engineers / 9 min

ASME B16.5 Flange Guide

A procurement-grade guide to ASME B16.5 flange scope, pressure classes, dimensional control, marking, testing, and how buyers should state requirements in an RTI RFQ.

Open guide

engineers / 8 min

ASME B16.9 Fittings Guide

Engineering guide to ASME B16.9 factory-made wrought buttwelding fittings, including scope, NPS range, wall basis, dimensional references, and RFQ implications.

Open guide

quality / 8 min

ASTM B564 Guide

Controlled guide to ASTM B564 nickel alloy forgings for flanges, forged components, chemical and mechanical test expectations, and buyer documentation.

Open guide

quality / 8 min

ASTM B366 Guide

Technical guide to ASTM B366 / B366M nickel alloy fittings, construction classes, fitting forms, dimensional pairing, hydrostatic test wording, and RFQ controls.

Open guide

Inspection and documentation

4 controlled guides

quality / 7 min

EN 10204 3.1 Guide

Documentation guide explaining EN 10204 3.1 inspection certificates, how they differ from 3.2, and what procurement teams should verify before release.

Open guide

quality / 7 min

PMI Testing Guide

Engineering and procurement guide to Positive Material Identification for alloy flanges and fittings, including scope, limits, traceability, and RFQ wording.

Open guide

engineers / 9 min

NACE MR0175 / ISO 15156 Guide

Sour-service procurement guide for alloy components in H2S-containing oil and gas environments, explaining why material, hardness, condition, and environment must be reviewed.

Open guide

quality / 8 min

Material Traceability Guide

Quality guide explaining heat number traceability, MTC reconciliation, PMI, marking, packing, and release dossiers for critical alloy components.

Open guide

Flange engineering

3 controlled guides

buyers / 7 min

RF vs RTJ Flanges

Practical flange-facing guide comparing raised face and ring type joint flanges for alloy procurement, gasket selection, machining, inspection, and RFQ wording.

Open guide

buyers / 8 min

Flange Pressure Classes Explained

Buyer-focused explanation of ASME flange pressure classes, why class is not a direct psi rating, and how material, temperature, facing, and standard control quotation.

Open guide

buyers / 7 min

Flange Facing Types

Procurement guide to common flange facing choices, including RF, RTJ, FF, lap-joint context, surface protection, dimensional review, and RFQ impact.

Open guide

Pipe sizing fundamentals

2 controlled guides

buyers / 7 min

Pipe Schedule Explained

Engineering buyer guide to pipe schedule, wall thickness, bore matching, fitting compatibility, and why schedule must be separated from flange pressure class.

Open guide

buyers / 7 min

Nominal Pipe Size vs OD

Guide to the difference between nominal pipe size and outside diameter, with procurement implications for flanges, fittings, reducers, and bore matching.

Open guide

Material selection

4 controlled guides

engineers / 9 min

Duplex vs Super Duplex

Material-selection guide comparing duplex stainless steel and super duplex stainless steel for chloride service, strength, standards, NACE review, and procurement decisions.

Open guide

engineers / 9 min

Inconel 625 vs Incoloy 825

Material comparison guide for Inconel 625 and Incoloy 825, focusing on corrosion mechanisms, temperature, standards, product form, and procurement considerations.

Open guide

engineers / 9 min

Hastelloy C276 vs Inconel 625

Nickel alloy comparison guide for Hastelloy C276 and Inconel 625, with engineering selection cues for chemical processing, chloride service, and documentation.

Open guide

engineers / 8 min

316L vs Duplex 2205

Material-selection guide comparing 316L stainless steel and duplex 2205 for corrosion, strength, chloride exposure, standards, inspection, and procurement.

Open guide

Buyer FAQs

Clear answers for broad procurement questions.

What information should a flange or pipe fitting RFQ include?

A strong RFQ includes product form, material grade and UNS, dimensional standard, size, schedule or bore, pressure class, facing or end connection, quantity, testing, required documents, drawing reference, and destination.

Can a drawing-based or non-standard component be discussed?

Yes. Include the current drawing revision, material designation, dimensional requirements, standard references, inspection points, documentation requirements, quantity, and destination so the requirement can be reviewed clearly.

Which inspection and documentation requirements should be identified at RFQ stage?

State the requested MTC or EN 10204 certificate type, PMI, dimensional inspection, chemical or mechanical test evidence, NDT, IGC, NACE-related review, third-party inspection, marking, packing, and release-document requirements where applicable.

Knowledge should shorten the path to a clean RFQ.

The guide system connects material data pages, product pages, and the RFQ centre so buyers can move from standards review to a well-defined technical enquiry.

Knowledge to enquiry

Convert technical reading into better RFQ data

Guide pages and FAQs connect to the RFQ model so buyers can move from research to a structured enquiry.

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Technical quotation desk

Have a Technical Requirement?

Send us your material grade, size, class or schedule, quantity, and specification.

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