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Technical Resources & Standards Charts

Buyer-focused standards notes, charts and RFQ checklists for industrial metals and alloy procurement. Use these references to prepare clearer enquiries for Rubinox quotation support.

Pipe schedule guideMTC guidancePMI notesRFQ checklist

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Technical Resources for Metal RFQs

Use these buyer-focused references to prepare clearer RFQs for pipes, tubes, plates, fittings, flanges and industrial alloy products. These notes are not a substitute for the project specification or engineering approval.

Use for RFQ planningMatch grade, form, size, standard, quantity and delivery details before requesting quotation support.

Keep project specs finalFinal selection should follow drawings, buyer specification, consultant approval and the governing standard.

State documentation earlyMTC, PMI, inspection and export document needs should be mentioned where applicable and as per requirement.

Pipe dimensions guide Pipe schedule chart ASTM A312 vs A213 EN 10204 MTC guide IS 2062 vs ASTM A36 API 5L Grade B vs X52 vs X65 PMI testing guide Metal RFQ checklist

Stainless Steel Pipe Dimensions & Weight Chart

Pipe dimensions and weights depend on NPS, OD, schedule, wall thickness and material density. Buyers should share the standard and schedule instead of relying on a single generic chart.

Use this chart to prepare dimension-related RFQ fields. Final dimensions, tolerance and weight basis should follow the applicable standard or project drawing.

Swipe or scroll horizontally to view all table columns.

RFQ fields for stainless steel pipe dimensions and weight review
Field	What to share	Why it matters
Nominal pipe size or OD	NPS, OD in mm/inch, or project drawing reference	Prevents confusion between nominal size and actual outside diameter
Schedule or wall thickness	5S, 10S, 40S, 80S, 160S, XXS or exact wall thickness	Controls pressure class, weight and fabrication suitability
Length	Single random, double random, cut length or drawing length	Affects quotation, packing and logistics
Standard	ASTM, ASME, EN, DIN, JIS, IS or project specification	Controls tolerances, testing and documentation
Weight basis	Theoretical or actual weight requirement if specified	Helps compare quotations clearly

Pipe Schedule Chart: 5S, 10S, 40S, 80S, 160S, XXS

Use schedule references to avoid ambiguous pipe enquiries. Confirm whether stainless steel S schedules or carbon steel schedules are intended.

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Pipe schedule RFQ guide
Schedule	Typical RFQ note	Buyer should confirm
5S	Thin-wall stainless pipe enquiries where the project permits light wall schedules	NPS, OD, wall thickness, standard and service condition
10S	Common stainless pipe schedule for lighter process requirements where specified	Grade, pressure class and dimensional tolerance
40S / 40	Frequently requested schedule for industrial piping RFQs	Whether stainless S schedule or carbon steel schedule is intended
80S / 80	Heavier wall schedule enquiries for higher duty requirements where specified	Exact wall, pressure class, testing and inspection
160	Heavy wall pipe enquiries for specification-led projects	Material grade, standard, heat treatment and inspection needs
XXS	Extra heavy wall pipe enquiries	OD, wall, grade, end finish, quantity and delivery constraints

ASTM A312 vs ASTM A213 Guide

Use this comparison when the RFQ is unclear about pipe versus tube intent. The governing project standard should control final wording.

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A312 and A213 buyer comparison
Point	ASTM A312	ASTM A213
Common intent	Stainless steel seamless and welded pipe enquiries	Seamless boiler, superheater and heat-exchanger tube enquiries
Typical RFQ terms	Pipe size, schedule, grade, length and end finish	Tube OD, wall, grade, length, heat treatment and testing
Examples	SS 304, 304L, 316, 316L pipe RFQs	Stainless and alloy tube RFQs where A213 is specified
Buyer action	State pipe schedule and standard clearly	State tube dimensions and project testing requirements clearly

EN 10204 MTC Guide

Mention certificate expectations during RFQ. Documentation support is reviewed where applicable and as per customer requirement.

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EN 10204 certificate types
Type	General meaning	RFQ note
2.1	Declaration of compliance without test results	Use only when accepted by buyer specification
2.2	Test report based on non-specific inspection	Confirm whether project permits it
3.1	Inspection certificate with specific test results validated by a source-authorized inspection representative	Commonly requested for industrial metal procurement
3.2	Inspection certificate with additional independent or buyer-authorized validation	Needs early commercial and inspection coordination

IS 2062 vs ASTM A36 Comparison

Use this comparison to frame structural steel enquiries. Do not treat the standards as interchangeable without buyer or project approval.

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Structural steel RFQ comparison
Point	IS 2062	ASTM A36
Specification family	Indian structural steel specification	ASTM structural carbon steel specification
Common enquiries	Plates, sheets, flats, angles, channels and structural steel	Plates, base plates, structural sections and fabrication items
RFQ detail	Grade designation, quality, size and documentation	ASTM A36/A36M, size, thickness, section and documentation
Substitution	Do not assume equivalence	Do not assume equivalence without project approval

IS 2062 Steel ASTM A36 Carbon Steel

API 5L Grade B vs X52 vs X65

Use this chart to separate API 5L line pipe grades before RFQ. Confirm PSL, coating, inspection and documentation needs where applicable.

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API 5L line pipe RFQ comparison
Grade	RFQ focus	Details to share
Grade B	Line pipe grade enquiries where the project specifies Grade B	PSL level, pipe type, OD, wall, length, coating and testing
X52	Pipeline project enquiries where X52 is specified	PSL level, MTO, inspection, coating and documentation
X65	Pipeline project enquiries where X65 is specified	PSL level, wall thickness, testing and project specification

API 5L Grade B API 5L X52 API 5L X65

PMI Testing Guide

Use this guide to state PMI scope clearly during RFQ. Testing and report support should be reviewed where applicable and against the buyer requirement.

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PMI testing RFQ guide
Item	Buyer note	Why it matters
PMI scope	State whether PMI is required for all items or sample lots	Avoids unclear inspection scope
Method	Mention handheld XRF or project-specified method if required	Helps align inspection expectations
Report	Ask for report format and heat traceability where needed	Supports project documentation review
Timing	State pre-dispatch, third-party or site requirement	Affects scheduling and commercial scope

Price Factors / Quotation Guide

Rubinox does not publish fixed public prices because metal prices vary by grade, size, quantity, origin, documentation and market conditions. Buyers can request a current quotation with complete RFQ details.

Material grade and product form.
Size, wall thickness, schedule, tolerance and finish.
Quantity, cut lengths and packing.
MTC, PMI, testing and inspection requirements.
Domestic or export logistics and market movement.

Metal RFQ Checklist

1

Material family, exact grade and governing standard.

2

Product form, size, wall, schedule, thickness or drawing.

3

Quantity, lengths, packing, marking and delivery location.

4

MTC, PMI, third-party inspection or export documentation needs.

Quality Documentation Support MTC, PMI and Inspection Article ASTM A106 Grade B Pipe API 5L Grade B Pipe

Technical Resources FAQs

Does Rubinox publish fixed public metal prices?

No. Rubinox does not publish fixed public prices because metal prices vary by grade, form, size, quantity, origin, documentation, testing, packing and logistics. Buyers can request a current quotation with complete RFQ details.

Can I use these charts as final engineering data?

Use these charts as RFQ preparation guidance only. Final engineering selection should follow the governing standard, drawing, project specification and buyer or consultant approval.

What details should I include for pipe schedule enquiries?

Share NPS or OD, schedule or wall thickness, length, material grade, standard, quantity, end finish, testing, MTC and delivery location.

Can Rubinox help with EN 10204 MTC requirements?

Rubinox can review EN 10204 3.1 or 3.2 documentation requirements where applicable to the material source, grade, form and commercial scope.

Are technical resources available for export RFQs?

Yes. Export buyers can use the RFQ checklist and share destination, packing, marking, inspection and documentation requirements for review.

Standards and Price Factor Guides

Review specification pages and quotation-factor guides before sending an RFQ.

Prepare a Clear Metal RFQ

Share grade, standard, size, quantity, documentation and delivery details for quotation review.

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