A213 T22 Seamless Pipe

QS Pipe: Wuxi A213 T22 Seamless Pipe

A213 T22 Cr-Mo seamless pipe, 89 mm diameter and 9 mm wall with red finish for boiler, superheater and heat exchanger service.

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One-Minute Overview

A213 T22 seamless pipe, 89 mm outside diameter with 9 mm wall for boiler duty.
2.25Cr-1Mo steel for superheaters and exchangers running at high temperature.
Seamless tubular structure free of weld defects under high pressure.
Normal red surface marking the T22 grade through transport and storage.

The A213 T22 seamless pipe is the heavier Cr-Mo cousin of T12, built for the hottest rows of the boiler. T22 carries roughly 2.25 percent chromium and 1 percent molybdenum, chemistry chosen for creep strength — the resistance to slowly stretching under load at temperature. With an 89 mm outside diameter and a 9 mm wall, this pipe is a pressure section for superheaters, heat exchangers and boiler tubes where steam conditions punish ordinary steel. The seamless construction is non-negotiable in this service: piercing a solid billet and rolling the shell eliminates weld defects such as porosity or lack of fusion from the pressure envelope entirely.

Name: A213 T22 Seamless Pipe
Type: Seamless
Size: Φ89 mm
Material: A213 T22
Standard: ASTM
Wall Thickness: 9 mm
Surface: Normal Red
Application: Used for Boilers, superheaters and heat exchangers and other fields

Manufacture tells the story of this pipe. The process starts with billets heated to the austenitising range, then piercing converts the solid into a hollow shell and multi-stand rolling brings it to the target dimension — the wall thickness tolerance tightens as the shell is worked down. With no weld in the section, inspection focuses on wall soundness along the length and on the chemistry that carries the creep promise. The normal red finish is the protective paint that identifies the alloy tube and protects it in transit; it is removed at weld preparation. In service, T22 rewards the same discipline it demands in fabrication: proper preheat, matching consumables and post-weld heat treatment where the code calls for it.

Select the grade against your steam data rather than the catalogue name, and confirm wall and diameter against the drawing before release. Size and wall thickness are confirmed per inquiry, and a detailed specification sheet is available on request.

FAQ

Q1. How is T22 different from T12?

More chromium and more molybdenum, so more creep strength at higher temperature. T12 covers moderate superheat duty; T22 goes where steam conditions are harsher and the tube needs a bigger margin against slow deformation under load. Both are Cr-Mo seamless, sized by the same family logic.

Q2. Why does the seamless process matter for creep service?

Creep damage likes discontinuities — a weld line, a heat affected zone, a wall that varies around the circumference. Seamless starts from a pierced billet and works the wall uniformly, so there is no built-in weak line for a crack to follow during years of thermal service.

Q3. What does the red finish do?

It is protective identification paint for alloy tube: it keeps the surface from rusting in transit and storage and marks the grade for the shop floor. It is removed before weld preparation, and at temperature the oxidation resistance comes from the chromium in the steel itself.

Q4. How long will production take for T22 boiler tube?

Standard sizes are typically ready within 30 days, and in-stock items ship immediately. Larger or custom orders get a confirmed date per order, because the schedule depends on quantity, material, the bolt pattern you specify, and how busy production is at the moment you order.

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