Hunan Hengan Weiye Metal Products Co., Ltd.
| Standard | ASTM A182,EN 10222-5,JIS G3214 |
| Height | 50-1500mm |
| Delivery Time | 10–30 Working Days |
| OD | 10-6000mm |
| Grade | 304L,316L,310S,321,347,904L |
| Delivery conditions | Hot Forged / Ring‑Rolled, Solution Annealed, Water Quenched, Stress‑Relieved, Pickled |
| Packaging Details | Waterproof polybag + Export wooden pallet / wooden case |
| Payment Terms | T/T,L/C AT SIGHT |
| Thickness | 3-500mm |
| Place of Origin | China |
| Brand Name | HA Steel |
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Product Specification
| Standard | ASTM A182,EN 10222-5,JIS G3214 | Height | 50-1500mm |
| Delivery Time | 10–30 Working Days | OD | 10-6000mm |
| Grade | 304L,316L,310S,321,347,904L | Delivery conditions | Hot Forged / Ring‑Rolled, Solution Annealed, Water Quenched, Stress‑Relieved, Pickled |
| Packaging Details | Waterproof polybag + Export wooden pallet / wooden case | Payment Terms | T/T,L/C AT SIGHT |
| Thickness | 3-500mm | Place of Origin | China |
| Brand Name | HA Steel |
This series of austenitic stainless steel forged rings are manufactured by open-die forging and radial-axial ring rolling process. After full solution annealing and water quenching treatment, uniform stable austenite microstructure is formed without harmful precipitates.
316L is the universal molybdenum-bearing austenitic stainless steel, suitable for medium chloride, food and general chemical environments with balanced cost and corrosion resistance. 904L belongs to super austenitic stainless steel, featuring high Ni-Mo-Cu composite formula, outstanding tolerance to mixed sulfuric-phosphoric acid, high-concentration brine and industrial waste liquid, which cannot be satisfied by regular duplex and 316L steel. Seamless forged ring blanks save massive solid bar deep boring workload, commonly processed into pressure vessel flanges, heat exchanger tube sheet rings, reactor sealing rings and pipeline connecting annular components.
Low-carbon molybdenum austenitic stainless steel. Molybdenum improves resistance to pitting and crevice corrosion in seawater and weak acids; low carbon avoids welding intergranular corrosion; non-magnetic, easy forming and welding, cost-effective for most medium corrosive industrial scenarios.
High nickel-molybdenum-copper super austenitic alloy. Unique Cu addition enhances reducing acid resistance; extremely high PRE value resists high chloride SCC; stable service in hot sulfuric acid, phosphoric acid and pickling media, ideal heavy-duty chemical equipment blank.
| Grade | EN No. | C ≤ | Si ≤ | Mn ≤ | P ≤ | S ≤ | Cr | Ni | Mo | Cu | N ≤ | Fe |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 316L | 1.4404 | 0.03 | 1.00 | 2.00 | 0.045 | 0.030 | 16.5–18.5 | 10.0–13.0 | 2.0–2.5 | — | 0.11 | Balance |
| 904L | 1.4539 | 0.02 | 1.00 | 2.00 | 0.040 | 0.030 | 19.0–23.0 | 23.0–28.0 | 4.0–5.0 | 1.0–2.0 | 0.10 | Balance |
| Property | 316L Forged Ring | 904L Forged Ring |
|---|---|---|
| Delivery Condition | Hot Forged / Ring Rolled, Solution Annealed, Water Quenched, Stress‑Relieved, Pickled | |
| Minimum Tensile Strength | ≥485 MPa (70 ksi) | ≥490 MPa (71 ksi) |
| Minimum 0.2% Yield Strength | ≥170 MPa (25 ksi) | ≥215 MPa (31 ksi) |
| Minimum Elongation (50mm gauge) | ≥40 % | ≥35 % |
| Max Brinell Hardness | ≤217 HB | ≤220 HB |
316L for standard marine & food industry; 904L super austenitic solves strong mixed acid high-chloride corrosion issues that duplex steel cannot handle.
Both grades adopt ultra-low carbon formula, no carbide precipitation during welding or long heating, welded rings keep full corrosion resistance without post heat treatment.
Single-phase austenite non-magnetic matrix, great ductility for turning, milling, bending and all complex forming processes.
Continuous metal fiber improves fatigue and pressure resistance of annular forgings, suitable high-pressure vessel flange blanks.
Smooth non-porous surface easy to clean, meet strict hygiene standards for food & pharmaceutical production equipment.
We provide integrated open-die forging & seamless ring rolling production, full CNC precision machining per customer CAD/PDF drawings:
We supply 316L & 904L austenitic forged rings, flanges and tube sheet blanks for food, marine, pharmaceutical and heavy chemical global clients.
Mill Test Certificate EN 10204 3.1 can be issued and delivered with shipment documents before delivery.
- Inner layer: Waterproof anti-rust plastic full wrap + separate plastic protective sleeves
- Outer layer: Reinforced fumigated wooden pallet / wooden case with separation blocks to avoid collision deformation
- Custom heavy-duty export packaging available upon customer request
Normally 10 – 45 working days after receiving advance payment. Exact lead time depends on ring OD/ID size, height, order quantity and custom machining demands.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler
Year Established:
1998
Total Annual:
>1-2 billion
Employee Number:
>200+
Ecer Certification：
Verified Supplier
HengAn Weiye Steel Group (HA Group) is a leading Chinese supplier of special steel, alloy materials, and precision machining services, with nearly 30 years of industry experience. The company integrates material sourcing, manufacturing, processing, and international trade, providing one-stop solutio... HengAn Weiye Steel Group (HA Group) is a leading Chinese supplier of special steel, alloy materials, and precision machining services, with nearly 30 years of industry experience. The company integrates material sourcing, manufacturing, processing, and international trade, providing one-stop solutio...
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