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F316L stainless steel forgings are the ideal material for manufacturing highly reliable industrial valves. Designed specifically for pressure-bearing valve components, these products encompass a wide range of structural configurations, including valve bodies, valve covers, valve discs, and flanges.
Thanks to the superior properties of 316L ultra-low-carbon austenitic stainless steel, the finished forgings deliver outstanding performance in terms of corrosion resistance, high-temperature strength, and machinability, and are widely used in demanding operating conditions across industries such as chemicals, petroleum, natural gas, power generation, and offshore engineering.
Our F316L valve forgings strictly comply with the Chinese national standard GB/T 35741-2017, “Technical Requirements for Stainless Steel Forgings for Industrial Valves.” Their material grades and chemical compositions conform to leading international standards and can meet the diverse specification requirements of customers worldwide:
Standard | Grade | Remark |
ChinaGB | 022Cr17Ni12Mo2 | S31603 |
America ASTM / ASME | 316L | A182 F316(L) |
America UNS | S31603 | |
Japan JIS | SUS316L | |
European / Germany DIN | 1.4404 / X2CrNiMo17-12-2 | |
Korea KS | STS316L |
Element | C | Si | Mn | P | S | Cr | Ni | Mo |
Standard | ≤0.03 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 16.00 ~ 18.00 | 10.00 ~ 14.00 | 2.00 ~ 3.00 |
Grade | Nominal thickness mm | Heat Treatment | Tensile strength MPa | Yield strength MPa | Elongation % | Hardness HBW |
022Cr17Ni12Mo2 (316L) | ≤150 | solution treatment 1010~1150℃ | ≥480 | ≥175 | ≥35 | — |
>150~300 | ≥460 | ≥175 | ≥35 | — |
All processes, including forging, heat treatment, machining, and inspection, are carried out in-house at our facility.
Forging Ratio Control: When using steel billets for forging, the forging ratio of the main cross-section shall be no less than 3; when using rolled stock, it shall be no less than 2, to ensure a uniform and dense microstructure.
Heat Treatment Specifications: Strictly follow the solution treatment process recommended by the standard, and perform rapid cooling at 1010°C to 1150°C to achieve optimal corrosion resistance and mechanical properties.
We offer complete stainless steel machining services – from rough turning to precision finishing – with in-house inspection to guarantee dimensional accuracy on every batch.
Metallography and Non-Destructive Testing: Grain size: not less than Grade 7; Non-metallic inclusions: sulfides and alumina-type inclusions ≤ Grade 1.0, silicate-type inclusions ≤ Grade 1.5, spheroidal oxide-type inclusions ≤ Grade 2; Ultrasonic testing (UT)
Type | Application | Characteristics |
Hollow Forging | Valve chamber, branch pipe | Suitable for hollow components whose axial length is greater than their outer diameter. |
Ring Forging | Connection pipe | Suitable for hollow components whose axial length does not exceed their outer diameter. |
Disk Forging | Valve disc, valve cover | Suitable for solid disc-shaped parts. |
Neck Flange Forging | Valve cover and flange connection | Suitable for forgings with a necked flange design. |
Bar Forging | Valve stem | Suitable for solid, elongated components with circular or rectangular cross-sections. |
Valve Forging | T-shaped valve body, with/without flange die-cast valve body | Valve body forgings that can be customised to complex shapes. |
Why choose our 316L valve forgings?
1 Compliance with Standards: Products are manufactured, inspected and delivered in strict accordance with the GB/T 35741-2017 standard, and complete quality certification documentation is provided.
2 Material Guarantee: High-quality 316L stainless steel is used, with chemical composition and mechanical properties meeting the standard 100 per cent; material re-inspection reports are provided.
3 Reliable Manufacturing Processes: Mature forging and heat treatment processes, combined with rigorous intergranular corrosion testing and macrostructural inspection, ensure the long-term reliability of the products in harsh environments.
4 Traceability: Each forging is marked with the manufacturer’s code, material, furnace number and forging grade, enabling traceability throughout its entire lifecycle.
