In industrial equipment, cover plate forgings often face hidden dangers such as poor sealing, insufficient pressure resistance, and short service life. The cover plate forgings produced by Jianing rely on the open-die forging process to control microstructure density and mechanical properties from the source, helping each product maintain continuous operation under harsh conditions such as high pressure, high temperature, and frequent start-stop.
In industrial equipment, cover plate forgings often face hidden dangers such as poor sealing, insufficient pressure resistance, and short service life. The cover plate forgings produced by Jianing rely on the open-die forging process to control microstructure density and mechanical properties from the source, helping each product maintain continuous operation under harsh conditions such as high pressure, high temperature, and frequent start-stop.
Cover plate forgings (head cover plate forgings) are key sealing and load-bearing components for pressure vessels, pipelines, valves, and other equipment. Jianing Forging uses high-quality alloy steel or stainless steel billets and is forged as a whole through the open-die forging process. After fine heat treatment and machining, the product has no internal casting defects such as pores or segregation, offers high dimensional accuracy, and has a smooth sealing surface, making it suitable for direct welding or bolted connections.
Open-die forging process: Using hydraulic presses or air hammers for free-forging to fully break up the casting structure, obtain fine grains and streamlined distribution, and enhance strength and toughness.
Customized design: Adjust materials, dimensions, and sealing structures according to user drawings or working condition requirements, supporting various shapes such as non-standard head cover plates, flange covers, blind plates, and more.
Strict quality control: Every product undergoes ultrasonic testing (UT) and magnetic particle testing (MT), ensuring no internal cracks, slag inclusions, and other defects, meeting standards such as NB/T 47008 and JB/T 4726.
Surface post-treatment: We can provide rough machining, fine machining, drilling, tapping, anti-rust paint, or galvanizing treatments, with delivery conditions directly meeting customer assembly requirements.
Cover plate forgings are customized products, and their price is affected by factors such as material, size, quantity, and subsequent machining requirements. We offer one-on-one technical communication and quotation services. Please provide drawings or technical condition documents, and Jianing Forging will provide a reasonable quotation within 24 hours.
All products are inspected according to drawing requirements, and material certificates, flaw detection reports, and heat treatment curves can be provided.
Delivery times are controllable; regular items take 15-20 working days, urgent shipments can be negotiated and scheduled.
After-sales Service: If defects are caused by our company's manufacturing, we will provide free returns, exchanges, or repairs, and bear corresponding responsibilities.
Technical consultation: Senior forging engineers provide free assistance to optimize designs and reduce processing costs.
| Parameter items | Scope/Description |
|---|---|
| Material | Q345R, 16Mn, 20MnMo, 304, 316L, F304, F316, etc |
| Nominal diameter DN | DN200 ~ DN3000 (customizable for special sizes) |
| Thickness | 20mm ~ 300mm (designed according to pressure rating) |
| Machining accuracy | Outer diameter/inner hole tolerance IT8~IT10, flatness ≤0.5mm (reference) |
| Implement standards | NB/T 47008-2017, JB/T 4726, ASME SA-105, etc |
