Standard and scope
Standard, product family and subcategory can be checked before inquiry.
Marine Cast Iron Flanged Packed Cock (GB/T593-93) is designed to GB/T 593-93 with flanged ends. nominal size is DN20-80; pressure rating is 0.6 MPa; suitable media are seawater, freshwater, lubricating oil, fuel oil. 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 Iron Flanged Packed Cock (GB/T593-93) is designed to GB/T 593-93 with flanged ends. nominal size is DN20-80; pressure rating is 0.6 MPa; suitable media are seawater, freshwater, lubricating oil, fuel oil. Confirm size, class, materials and documentation requirements with your inquiry.
Standard, product family and subcategory can be checked before inquiry.
Check valve configuration, connection and installation orientation against the structure drawing.
MTC, pressure testing, records and supplementary inspection scope are confirmed by product and order requirement.
This GB/T 593-93 variant uses gray cast iron (HT200) with flanged ends. The same DN20-80 and 0.6 MPa range does not make it interchangeable with the bronze variant.
| Decision field | This model | Confirmation boundary |
|---|---|---|
| Standard family | GB/T 593-93 flanged packed cock | Confirm the standard edition and product scope cited by the project |
| Material variant | Gray cast iron HT200 | Confirm medium compatibility, corrosion allowance, temperature and project acceptance before use |
| Connection and rating | Flanged, DN20-80, 0.6 MPa | Verify flange details, pipeline loads and installation position with the drawing |
Compare all six variants in marine plug valves and cocks, and confirm substitution limits through the pressure and flange guide.
| Parameter | Value |
|---|---|
| Product | Marine Cast Iron Flanged Packed Cock |
| Design standard | GB/T 593-93 |
| Body type | Type A/AS, Type L/LS, Type T/TS |
| Body material | gray cast iron (HT200) |
| End connection | Flanged |
| Item | Specification |
|---|---|
| Nominal pressure | 0.6 MPa |
| Nominal size | DN20-80 |
| Suitable media | seawater, freshwater, lubricating oil, fuel oil |
| Part | Material |
|---|---|
| Body | gray cast iron (HT200) |
Confirm material, flow velocity and installation position before seawater, ballast or sea-suction service.
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.
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.
