Beyond SA106 Gr.B, global boiler and power station projects also frequently specify a complete portfolio of ASME boiler tube grades to match different temperature and pressure working conditions. This article will break down 2026 price drivers, supply & demand changes, and future market outlook for SA106 Gr.B and mainstream US-standard boiler pipe materials.

Main American Standard High Pressure Boiler Tube Grades

For high pressure boiler service, two major ASME specification families dominate international procurement lists: carbon steel SA106 series and alloy steel SA335 series.

1. SA106 Gr.A / Gr.B / Gr.C (Carbon Steel Boiler Tube)

SA106 Gr.B remains the mainstream commodity grade for medium-high temperature systems below 450°C, with balanced tensile strength and excellent weldability. SA106 Gr.C offers higher mechanical strength for heavier wall boiler components.

2. SA335 P11, P12, P22 (Cr-Mo Low Alloy Boiler Tube)

P11 and P22 are classic chrome-moly seamless tubes, widely used for superheater, reheater and header piping of thermal power boilers under 595℃ working temperature.

3. SA335 P91, P92 (Martensitic Heat-resistant Alloy Tube)

P91 and P92 belong to high-end high-pressure boiler pipes for ultra-supercritical power units, requiring strict normalized & tempered heat treatment and 100% NDT inspection, with higher raw material and manufacturing cost compared with SA106 Gr.B.

Other frequently requested boiler tube materials also include SA179, SA192, SA210A1 and SA210C for boiler heating surface tubes. Our mill can manufacture all above grades and provide official MTR material test reports for export.

2026 SA106 Gr.B Price Trend

SA106 Gr.B FOB China price kept fluctuating moderately in the first half of 2026. The quotation is mainly determined by steel billet raw material cost, OD, wall thickness, schedule, inspection requirement and order tonnage.

• Thin-wall & small OD SA106 Gr.B (SCH40, NPS1/2”–2”): higher unit price due to cold drawn production process

• Large OD medium wall SA106 Gr.B (NPS6”–12”, SCH40): the largest-volume export segment with competitive FOB price

Major factors affecting SA106 Gr.B price movement in 2026:

1. Steel billet and iron ore price volatility

2. Ocean freight fluctuation for Asia, Middle East, South America and Africa export

3. Tight supply of heavy-wall seamless tube capacity

4. Increased inspection cost for ASME third-party witness test requested by overseas EPC contractors

Price note: SA106 Gr.B carbon boiler tube is generally much cheaper than SA335 P91 / P92 alloy boiler tubes, which is a key reason why SA106 Gr.B occupies the largest market share in general boiler piping.

Supply & Demand Changes in 2026 Global Boiler Tube Market

Global demand for American standard high pressure boiler tubes shows structural growth in 2026:

• Power plant retrofit & new unit construction: India, Southeast Asia, Middle East and Latin America continue thermal power station expansion and old boiler renovation, generating steady inquiries for SA106 Gr.B, P11 and P22 seamless tubes.

• Petrochemical and refinery projects: Refinery revamp projects create demand for high-temperature seamless piping.

• Market supply side: Many seamless pipe mills focus more on high-margin alloy tube production, which sometimes tightens delivery of standard SA106 Gr.B and extends lead time during peak season.

Future Market Outlook

Looking forward, two trends will reshape the boiler tube export market:

1. Dual demand structure: Large-volume commodity SA106 Gr.B will maintain stable basic demand, while high-alloy grades P91/P92 will enjoy faster growth driven by high-parameter ultra-supercritical power units.

2. Higher quality and certification requirements: Buyers pay more attention to ASME compliance, UT / ET hydrostatic test, full MTR documentation and traceability of boiler tubes.

Our Capability

We are a dedicated manufacturer of ASME high pressure boiler tubes.

✅ Full grade supply: SA106 Gr.B / Gr.C, SA335 P11, P22, P91, P92, SA210 etc.

✅ Custom production: custom outer diameter, wall thickness, fixed length, special schedule as per customer drawings

✅ Flexible lead time: arrange production according to customer project schedule for both big bulk order and trial small lots

✅ Complete export package & mill test certificate for international engineering projects

Contact our sales team now to get your latest quotation of SA106 Gr.B high pressure boiler tube.

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