ISO 1461 hot dip galvanising: scope, limits and acceptance
ISO 1461 hot dip galvanising explained: minimum coating thickness and mass by steel thickness, how to verify a coating on receipt, and where the standard stops.
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Topic hub · 30 guides
Standards and compliance
Standards are only useful when you know their scope. ISO 2768 does not cover welded assemblies; ISO 13920 does. IEC 62208 covers an empty enclosure, IEC 61439 covers the assembly inside it. This cluster explains what each standard covers, where it stops, and the document a buyer should expect at first article and at audit.
Guides in this topic, page 3
Which standard applies, what it actually covers, and the evidence a buyer should ask for: ISO, IEC, EN, RDSO and material certification.
Mill certificates for sheet metal: what they prove
Mill certificates explained for sheet metal buyers: what a 3.1 certificate states, what it leaves out, and the four numbers that decide whether a coil forms.
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Surface finish symbols: scope, limits and what to ask for
What surface finish symbols fix on a drawing, why an Ra callout on a laser-cut edge cannot be measured, and the coating numbers that should replace it.
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ISO 5817 weld quality levels: scope, limits and what to ask for
ISO 5817 quality levels B, C and D explained: undercut, porosity and excess weld metal limits, the level to put on a drawing, and where the standard stops.
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RDSO approval for railway components: scope and limits
RDSO approval attaches to an item, a drawing revision and a specification, not to a company. Here is what the route covers, where it stops, and what to file.
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Mill certificate versus test certificate: what each proves
Mill certificate versus test certificate: who issues each one, what it proves about the lot, and which document to write into the purchase order.
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IEC 61439 for assemblies: scope, limits and what to ask for
IEC 61439 assemblies explained: who declares the rating, how design and routine verification differ, the temperature limits, and where the enclosure supplier's scope ends.
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PPAP for sheet metal parts: scope, levels and evidence
PPAP for sheet metal parts: the 18 elements that actually apply, what a Ppk of 1.67 demands of a tolerance, and the shorter pack industrial buyers can use.
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REACH chemical compliance: scope, limits and evidence
REACH chemical compliance for fabricated metal parts: the 0.1% article threshold worked through a coated panel, and the statement a buyer should hold.
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