Technical updates and company news.
Read updates on flange standards, material grades, certifications, dimensions and export preparation.
PN vs Class Pressure Ratings: How Flange Ratings Compare
Why a PN flange and a Class flange are not interchangeable, how the ratings roughly correspond, and what to check when a project mixes standards.
C22.8 (1.0460) Flange Raw Material: Specification and RFQ Checklist
Use the published C22.8 material tables as a reference, then confirm the governing specification, product form and project requirements for the actual order.
Flange Facing Types: RF, FF and RTJ Compared
The differences between raised face, flat face and ring type joint flanges, which gaskets they use, and where each facing is required.
Flange Coatings: Anti-Rust Oil, Paint and Hot-Dip Galvanizing
The surface protection options for carbon steel flanges, how long each protects, and what to check on threads and sealing faces after coating.
Carbon Steel Flange Materials: A105, P245GH, S235JR and More
The carbon steel grades used for flanges under ASTM, EN and JIS standards, and how to choose between them for pressure, temperature and general service.
ISO 9001, EU PED and ASME B16.5: Three Different Checks for Flange Orders
A practical guide to separating quality-system certification, EU pressure-equipment requirements and flange dimensional specifications in a forged flange RFQ.
Forged Flange Quality Inspection Before Export Shipment
A practical purchasing note about forged flange quality inspection: dimensions, facing, drilling, markings, surface treatment and packing.
Flange Material Certificates and Heat Number Traceability for Export Orders
A practical purchasing note about forged steel flange material certificates: material grade, heat number traceability, inspection and document control.
Weld Neck Flanges vs Slip-On Flanges: Choosing the Right Type
A practical purchasing note about weld neck and slip-on flanges: project pressure, welding method, piping service and cost planning.
EN 1092-1 Flange Supply: What Buyers Should Confirm Before Ordering
A practical purchasing note about EN 1092-1 flanges: type, PN rating, facing, material grade and inspection documents.
ASME B16.5 Forged Steel Flanges for Export Piping Projects: RFQ Checklist
Specify the flange standard, edition, class, material, facing, dimensions and inspection documents before requesting an export quotation.
How to Prepare a Flange RFQ for a Faster and More Accurate Quotation
A practical purchasing note about flange quotation requirements: standard, type, size, pressure rating, material, quantity and delivery destination.
ISO 9001 for Forged Flange Suppliers: What the Certificate Does and Does Not Show
Check the quality-system certificate and the separate order records needed to assess forged flange supply.
Why Certifications Matter When Selecting a Forged Flange Manufacturer
A practical purchasing note about certified forged flange supply: ISO 9001, PED, AD 2000, UKCA and Korea KS certification.
DIN Plate Flanges for Export Projects: PN Rating, Material and Documents
A practical purchasing note about DIN plate flanges: DIN standard, PN rating, facing, material and export packing.
Export Packing for Forged Steel Flanges: Pallets, Cases and Shipping Preparation
A practical purchasing note about flange export packing: rust prevention, plywood cases, pallets, markings and shipping documents.
Custom Forged Flanges by Drawing: A Practical RFQ Checklist
A practical purchasing note about custom forged flanges: drawings, dimensions, material, quantity, inspection and delivery expectations.
GOST Flanges for Export Supply: Ordering Information Buyers Should Prepare
A practical purchasing note about GOST flanges: standard number, pressure, size, material, coating and destination.
JIS B2220 Flanges: Key Information for an Accurate Quotation
A practical purchasing note about JIS B2220 flanges: K rating, nominal size, flange type, material and quantity.
DIN Plate Flanges for Export Projects: PN Rating, Material and Documents
A practical purchasing note about DIN plate flanges: DIN standard, PN rating, facing, material and export packing.
Practical flange purchasing and technical notes.
Article topics focus on standards, materials, certificates, dimensions and export preparation.