Standard and scope
Design basis GB/T 584-2008, with CBM 1048/1051/1057-81 as compatible references.
Marine Cast Steel Flanged Stop Valve (GB/T584-2008) is designed to GB/T 584-2008 with flanged ends. Nominal size range is DN20-300; pressure ratings are 1.0 / 1.6 / 2.5 / 4.0 / 6.4 MPa; suitable media are freshwater, lubricating oil, fuel oil and steam. Confirm size, class, materials and documentation requirements with your inquiry.
Lead time and Incoterms confirmed by order; MTC 3.1 scope confirmed during RFQ
Marine Cast Steel Flanged Stop Valve (GB/T584-2008) is designed to GB/T 584-2008 with flanged ends. Nominal size range is DN20-300; pressure ratings are 1.0 / 1.6 / 2.5 / 4.0 / 6.4 MPa; suitable media are freshwater, lubricating oil, fuel oil and steam. Confirm size, class, materials and documentation requirements with your inquiry.
Design basis GB/T 584-2008, with CBM 1048/1051/1057-81 as compatible references.
A, B, AS and BS body types. Performance coverage is DN20-300 by pressure class; large-size dimensions are confirmed before quotation.
MTC, pressure testing, records, PMI, NDT and classification-society documents are confirmed by product and order requirement.
| Parameter | Value |
|---|---|
| Product | Marine Cast Steel Flanged Stop Valve |
| Design standard | GB/T 584-2008 |
| Body type | A / B / AS / BS |
| Body material | cast steel (ZG275-485) |
| End connection | Flanged |
| PN (MPa) | Nominal diameter DN (mm) | Applicable medium |
|---|---|---|
| 1.0 | 65-300 | Fresh water, lubricating oil, fuel oil, steam up to 300 °C |
| 1.6 | 65-250 | Fresh water, lubricating oil, fuel oil, steam up to 300 °C |
| 2.5 | 20-150 | Fresh water, lubricating oil, fuel oil, steam up to 300 °C |
| 4.0 | 65-100 | Fresh water, lubricating oil, fuel oil, steam up to 400 °C |
| 6.4 | 20-50 | Fresh water, lubricating oil, fuel oil, steam up to 400 °C |
| Part | Material |
|---|---|
| Body / bonnet | Cast steel (ZG275-485) |
| Disc | High-quality carbon steel (20) |
| Stem | Stainless steel (2Cr13) |
| Disc seal ring | Welded stainless steel (E410) |
| Body seal ring (PN≤2.5) | Welded stainless steel (E347) |
| Body seal ring (PN≥4.0) | Welded stainless steel (E347) |
For shipboard freshwater isolation, check or media-control duties.
Confirm cleanliness and sealing compatibility for lubricating-oil service.
Confirm pressure, temperature and sealing material for fuel-oil service.
Steam service is checked against temperature limits and pressure class.
Export packaging and protection are planned by product type, transport mode and order requirements; palletizing can be arranged.
Lead time, Incoterms and payment terms are confirmed with the specification, quantity, certificate scope and production schedule.
MTC, test records, PMI, NDT and class-certificate scope are confirmed by product and order requirement.
Customer-nominated classification society or third-party inspection can be arranged when specified in the order.
Short answers for procurement review. Technical data, project conditions, and document scope are confirmed before quotation.
It covers a marine cast steel flanged stop valve designed to GB/T 584-2008. The confirmed product range includes A, B, AS, and BS body types for freshwater, lubricating-oil, fuel-oil, and steam service after project confirmation.
The listed combinations are PN1.0 at DN65-300, PN1.6 at DN65-250, PN2.5 at DN20-150, PN4.0 at DN65-100, and PN6.4 at DN20-50. The exact body type, flange dimensions, and temperature basis are confirmed before quotation.
The body and bonnet are listed as cast steel ZG275-485, the disc as carbon steel grade 20, and the stem as stainless steel 2Cr13. Seal-ring materials are also listed by pressure class and must be reviewed with the complete order specification.
No. The listed media are freshwater, lubricating oil, fuel oil, and steam. Seawater service requires a separate material and application review rather than assuming the GB/T 584 cast-steel configuration is suitable.
Send body type, DN, pressure class, quantity, service medium and maximum temperature, flange details, destination or delivery term, certificate and inspection requirements, and required date. Attach a drawing when dimensions govern the selection.
EN 10204 3.1 MTC, pressure-test records, PMI, NDT, classification-society documents, and customer-nominated inspection are confirmed by product and order. They are not automatically included in every shipment.
