Standard and scope
Standard, product family and subcategory can be checked before inquiry.
Marine Cast Iron Flanged Stop Valve (GB/T590-2008) is designed to GB/T 590-2008 with flanged ends. nominal size is DN50-300；65-250；20-50; pressure rating is 0.6 / 1.6 MPa; suitable media are seawater, freshwater, lubricating oil, fuel oil, steam; steam up to 220°C. 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 Stop Valve (GB/T590-2008) is designed to GB/T 590-2008 with flanged ends. nominal size is DN50-300；65-250；20-50; pressure rating is 0.6 / 1.6 MPa; suitable media are seawater, freshwater, lubricating oil, fuel oil, steam; steam up to 220°C. 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.
| Parameter | Value |
|---|---|
| Product | Marine Cast Iron Flanged Stop Valve |
| Design standard | GB/T 590-2008 |
| Body type | Type A/AS, Type B/BS |
| Body material | gray cast iron (HT200) |
| End connection | Flanged |
| Item | Specification |
|---|---|
| Nominal pressure | 0.6 / 1.6 MPa |
| Nominal size | DN50-300；65-250；20-50 |
| Suitable media | seawater, freshwater, lubricating oil, fuel oil, steam; steam up to 220°C |
| Part | Material |
|---|---|
| Body, Bonnet | gray cast iron (HT200) |
| Disc | cast tin bronze (ZCuSn5Pb5Zn5) |
| Seat | cast aluminum bronze (ZCuA19Mn2) |
| Stem | aluminum bronze (CuA19Mn2) |
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.
Short answers for procurement review. Technical data, project conditions, and document scope are confirmed before quotation.
It covers a marine cast iron flanged stop valve designed to GB/T 590-2008. Type A/AS and Type B/BS constructions are listed for seawater, freshwater, lubricating-oil, fuel-oil, and steam service after confirmation.
The listed pressure ratings are 0.6 and 1.6 MPa, with nominal-size references DN50-300, DN65-250, and DN20-50. The applicable combination is confirmed against body type, pressure class, and installation before quotation.
The body and bonnet are listed as HT200 gray cast iron, the disc as cast tin bronze ZCuSn5Pb5Zn5, and the seat and stem as aluminum bronze. The complete material list is confirmed with the order.
The listed scope includes seawater service and steam up to 220°C, but this does not remove the need to review pressure, temperature, flow velocity, installation position, and project acceptance requirements.
Send body type, DN, pressure class, quantity, medium and maximum temperature, flange details, destination or delivery term, certificate and inspection requirements, and required date.
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.
