Welding Neck Flanges vs Slip On Flanges: Choosing the Right Type

For international piping projects, a clear request for quotation helps buyers receive a more accurate flange offer and a practical delivery plan. This technical note explains the main purchasing points for welding neck and slip on flanges.

Information to confirm before quotation

Please identify the required project pressure, welding method, piping service and cost planning. A drawing, specification sheet or item list is helpful when dimensions, drillings or facings are project-specific.

• Applicable flange standard and flange type
• Nominal size and pressure rating
• Material grade, facing and surface treatment
• Quantity, inspection requirement and destination

Supply and quality control

Shandong Hyupshin Flanges Co., Ltd manufactures and supplies forged steel flanges for export orders. Available supply capabilities include:

• ANSI ASME B16 Forged Steel Flanges ASTM A105
• EN1092-1 Type 12 13 PN16 Slip on Boss Threaded Flanges Steel S235JR
• DIN 2633 DIN 2527 DIN 2576 DIN 2642 Flanges Mild Steel Carbon Steel

Depending on the order requirements, documentation can include material traceability, inspection records and relevant certification references such as ISO 9001, Korea KS, CE PED, UKCA, AD 2000, LRQA.

Send your flange requirements

For a project quotation, review the related welding neck and slip on flanges information and send your RFQ, drawing or item list. Our sales team will review the details and reply with an export supply proposal.