Practical notes on stainless steel pipe selection, standards, inspection and sourcing, written for engineers and buyers who need to make a specification decision.
4 min read
Engineering criteria for selecting ASTM A312 and A790 stainless and duplex pipes for trenchless HDD crossings: pullback load, collapse, and NDT.
Read guideMaterial selection
Engineering criteria for selecting ASTM A312 and A790 stainless and duplex pipes for trenchless HDD crossings: pullback load, collapse, and NDT.
4 min read
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Duplex & high-alloy
Compare solid duplex and nickel alloy pipes against lined carbon steel for abrasive slurries and corrosive service: wear, vacuum, and CPT limits.
3 min read
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Duplex & high-alloy
Specify Inconel 625 (UNS N06625) seamless pipe to ASTM B444 by separating Grade 1 annealed and Grade 2 solution annealed conditions, chemistry, and testing.
5 min read
Read guideSourcing & RFQ
Check legal identity, ISO 9001 scope, equipment evidence and document control before shortlisting a Chinese seamless stainless pipe mill.
7 min read
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Sourcing & RFQ
Specify end protection, marking, packing-list identity and the Incoterms rule before a stainless pipe shipment leaves the mill.
6 min read
Read guideTubing & fabrication
Specify the cold-drawn or cold-rolled route, finished size, heat treatment and inspection when ordering seamless stainless pipe.
7 min read
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Tubing & fabrication
Write a heat-exchanger tube enquiry from the bundle: straight, U-tube or rectangular, with standard, wall basis and inspection.
6 min read
Read guideDuplex & high-alloy
Frame a seawater pipe enquiry by service conditions, then compare duplex and nickel-alloy catalogue groups without a name-only approval.
6 min read
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Standards & sizing
A military-standards catalogue label is not a project approval. Name the governing specification, grade, inspection and documents first.
6 min read
Read guideSourcing & RFQ
Build a clear Junda Pipe RFQ from product, grade, dimensions, inspection and destination, with an illustrative request and quotation comparison method.
3 min read
Read guideSurface & finish
Separate cleaning, descaling, pickling and passivation requirements, and agree surface acceptance without relying on appearance alone.
3 min read
Read guideInspection & documents
Review material certificates, inspection reports and markings as one traceability chain, with a discrepancy log and shipment reconciliation steps.
3 min read
Read guideInspection & documents
Compare the questions addressed by UT, ET and hydrostatic testing, then define method, coverage and acceptance without assuming interchangeability.
3 min read
Read guideInspection & documents
Review eddy current testing scope, reference standards and coverage for stainless tubing, and distinguish equipment capability from batch acceptance.
3 min read
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Tubing & fabrication
Define a rectangular tube profile with corner radii, wall and flow dimensions. Includes a bounded hydraulic-diameter example for comparison.
3 min read
Read guideTubing & fabrication
Define U-tube bend radius, leg spacing, lengths and final inspection, with an illustrative centreline geometry calculation for a semicircular bend.
3 min read
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Tubing & fabrication
Compare continuous long tubes with joined lengths using an illustrative joint count, then define straightness, inspection and transport requirements.
3 min read
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Tubing & fabrication
Use finished OD, bore and machining allowances to define thick-wall stainless pipe stock, with an illustrative geometry calculation.
3 min read
Read guideTubing & fabrication
Prepare thin-wall tubing requirements for geometry, end condition, inspection coverage and packaging, with a receiving inspection sequence.
3 min read
Read guideTubing & fabrication
Define OD, ID, wall, ovality and straightness for precision stainless tubing, with an illustrative tolerance stack and drawing review checklist.
3 min read
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Heat-resistant grades
Compare 800-series designations using the original alloy bulletin and learn why a catalogue label such as 800T needs written confirmation.
3 min read
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Duplex & high-alloy
Read C-276 corrosion charts with their concentration, temperature and laboratory limits, then prepare a process-specific material enquiry.
3 min read
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Material selection
Compare 904L and a 254SMo enquiry by confirmed designation, corrosion evidence and fabrication scope, with a practical two-offer review table.
3 min read
Read guideMaterial selection
Assess 904L pipe using acid identity, concentration, temperature and contaminants. Includes an exposure matrix and corrosion-data review method.
3 min read
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Duplex & high-alloy
Compare high-alloy austenitic and super duplex pipe by service evidence, fabrication and inspection instead of ranking them by alloy name alone.
3 min read
Read guideInspection & documents
Build a duplex pipe inspection request around heat treatment, sampling and applicable A923 methods, with a traceability review table.
3 min read
Read guideDuplex & high-alloy
Calculate PREN from an illustrative stainless steel chemistry and understand why it cannot replace corrosion testing or material approval.
3 min read
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Duplex & high-alloy
Compare standard duplex 2205 with super duplex 2507 using traceable material references, and learn how to handle an ambiguous catalogue designation.
3 min read
Read guideDuplex & high-alloy
Prepare an S32750 super duplex tubing enquiry with the correct product standard, wall basis, service conditions and inspection requirements.
3 min read
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Inspection & documents
Review a 347H tube offer through a document trail linking the order, heat, inspection records and delivered pieces, including Japan project requirements.
3 min read
Read guideSourcing & RFQ
Review SUS 347 pipe sourcing for Japan by separating material compliance, manufacturing origin and supplier location, with an evidence checklist.
3 min read
Read guideHeat-resistant grades
Prepare a 347H pipe enquiry with design temperature, duration, cycling, material condition and inspection requirements instead of a temperature label alone.
3 min read
Read guideStandards & sizing
Separate grade names from product standards when reviewing SUS 347 and UNS S34700. Includes a designation cross-check and discrepancy workflow.
3 min read
Read guideHeat-resistant grades
Understand why 347 and 347H need separate purchase requirements, and review creep duty, product form and certificates before substitution.
3 min read
Read guide
Material selection
Compare the material basis of 316L and 317L, then assess corrosion evidence, fabrication and quotation scope before approving a substitution.
3 min read
Read guideMaterial selection
Review 316L for welded piping without confusing low carbon with universal corrosion resistance. Includes service and fabrication review steps.
3 min read
Read guideStandards & sizing
Compare the published scopes of A312, A269 and A213 and turn a stainless pipe or heat-exchanger tube request into a clear purchase description.
3 min read
Read guideStandards & sizing
Understand NPS, outside diameter and wall thickness before ordering stainless steel pipe or tube. Includes an illustrative bore calculation.
3 min read
Read guideMaterial selection
Choose an austenitic stainless steel pipe by service conditions, product standard and inspection needs, with a practical material screening table.
3 min read
Read guideSend the grade, dimensions, quantity and required documents with your enquiry.
