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| Property | Parameter | Description |
|---|---|---|
| Product Name | Boiler Tube | Seamless steel tube designed for high-temperature and high-pressure boiler applications |
| Material Grade | ASTM A106 Gr.B / SA210 Gr.A1 / SA213 T11 / T22 / T91 | Equivalent to EN 10216-2 16Mo3, 13CrMo4-5; JIS G3461 STB340; GB 5310 20G, 15CrMoG |
| Standard Compliance | ASTM A106 / A210 / A213 / EN 10216-2 / JIS G3461 / GB 5310 | International standards for seamless boiler tubes and superheater tubes |
| Carbon (C) | 0.10 – 0.30% | Varies by grade; e.g., A106 Gr.B: ≤0.30%, SA210 A1: 0.17–0.27% |
| Manganese (Mn) | 0.29 – 1.06% | Enhances strength and hardenability; per ASTM specification |
| Chromium (Cr) | 0 – 9.50% | Present in alloy grades such as T11 (1.00–1.50%), T22 (1.90–2.60%), T91 (8.00–9.50%) |
| Molybdenum (Mo) | 0 – 1.10% | Improves high-temperature creep resistance; T11: 0.44–0.65%, T22: 0.87–1.13% |
| Phosphorus (P) / Sulfur (S) | P ≤0.035% / S ≤0.035% | Controlled to ensure weldability and toughness per applicable standards |
| Tensile Strength | 415 – 620 MPa | A106 Gr.B: ≥415 MPa; SA213 T91: ≥585 MPa per ASTM requirements |
| Yield Strength | 205 – 415 MPa | A106 Gr.B: ≥240 MPa; SA213 T91: ≥415 MPa (min) per ASTM requirements |
| Elongation | ≥20% | Minimum elongation in 50 mm gauge length; varies by grade and wall thickness |
| Outer Diameter (OD) | 10.3 – 660 mm (1/8'' – 26'') | Customizable per project requirements; standard and non-standard sizes available |
| Wall Thickness (WT) | 1.0 – 60 mm | Scheduled thickness from SCH20 to SCH160 or custom specifications |
| Length | 4,000 – 12,000 mm | Fixed length, random length, or cut-to-length as per customer request |
| Surface Finish | Black painted / Oiled / Varnished / Bare | Anti-corrosion coating applied; bevel ends or plain ends available |
| Application | Power plant boilers, superheaters, economizers, petrochemical heat exchangers | Suitable for medium and high-pressure service at elevated temperatures up to 650°C |
| Certification | ISO 9001, PED 2014/68/EU, TÜV, Lloyd's, BV, ABS | Mill test certificate EN 10204 3.1 / 3.2 provided with each shipment |
| Packaging | Bundled with steel strips, plastic caps on ends, waterproof wrapping | Seaworthy export packaging; customized marking and labeling supported |
Quality Was Fine — Packaging Issue on Arrival, Resolved Promptly
Ordered 4 tons of SA192 boiler tubes, 33.4mm OD x 3.38mm WT, for a boiler maintenance project. The tubes themselves were good — hydrostatic tested, correct dimensions, clean surface finish. However, some bundles had damaged packaging on arrival in Melbourne, and a few tube ends had minor surface scratches. Reported it to Kuaima and they responded within 24 hours, issued a credit for the affected pieces, and shipped replacements at no charge. Problem handled professionally, so I'd still consider them for future orders.
Ordered 4 tons of SA192 boiler tubes, 33.4mm OD x 3.38mm WT, for a boiler maintenance project. The tubes themselves were good — hydrostatic tested, correct dimensions, clean surface finish. However, some bundles had damaged packaging on arrival in Melbourne, and a few tube ends had minor surface scratches. Reported it to Kuaima and they responded within 24 hours, issued a credit for the affected pieces, and shipped replacements at no charge. Problem handled professionally, so I'd still consider them for future orders.
