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Alloy Steel Seamless Pipe

ASME SA335 T91/P91 T92/P92 Superheater Pipe

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Are you searching for a high-performance piping solution that delivers decades of reliable service in the most demanding power plant environments? Our ASME SA335 T91/P92 Super Alloy Boiler Tubes​ are the premier product specifically engineered for the critical high-temperature sections of supercritical and ultra-supercritical coal-fired power plants.

This is not ordinary steel pipe. It is the key to unlocking next-generation power plant efficiency.

Designed for the most extreme service conditions within boiler systems—specifically for superheaters, reheaters, and main steam lines—these tubes continuously withstand temperatures exceeding 600°C (1112°F)​ and immense pressure. Where conventional materials would rapidly succumb to creep and failure, our T91/P92 tubes, with their advanced 9% Chromium alloy steel composition, offer unmatched high-temperature strength, exceptional creep resistance, and superior oxidation/corrosion resistance.

Primary Applications:
Superheater and reheater tubes for Supercritical (SC) & Ultra-Supercritical (USC) power plant boilers
Main steam pipelines and high-temperature headers
Piping for other energy and chemical processing equipment operating at high parameters

Every tube we supply is manufactured in strict compliance with the ASME SA335​ international standard, ensuring full traceability and absolute reliability from chemical composition to mechanical properties. If you are designing or upgrading efficient, clean-generation assets, this is the foundational material you need.
At 630°C/30MPa critical steam parameters, 0.1mm spalling oxide scale clogs thousands of pipelines, crippling systems.Our T91/T92 seamless tubes—forged with 9% Cr-W-V alloy—serve as the steel lifeblood of 300+ global ultra-supercritical units, proven unrivaled in extreme conditions.

Get a free quote today or send us your specifications — fast response and competitive pricing guaranteed!

Product Parameters

Process Cold Rolled / Hot Rolled
Material Grade API, ASTM, BS, DIN, GB, JIS
Certificates RoHS, SNI, BIS, SASO, SONCAP, API, ISO
Trade Terms EXW, CFR, CIF
Payment Terms 30% T/T deposit, 70% final payment
Available Sizes Seamless steel pipe with outer diameter from 1/8" (10.3mm) to 56" (1422.4mm), wall thickness up to 5.91" (150mm)
Payment Clause 30% T/T, 70% final payment
Application Waterworks, Petrochemical, Power Industry, Agricultural Irrigation, Urban Construction
Surface Treatment Galvanized, PVC Coating, Black and Color Paint, Clear Oil, Anti-rust Oil as per customer requirement
Company Advantages 1. Complete specifications and customization available
2. Strict material selection and precise cutting
3. Factory visits supported — we welcome all partners to visit and explore win-win cooperation

About Us

factory
Dexin Steel Tube (China) Co., Ltd is one of the leading seamless steel pipe manufacturers in China with ISO9001 certification, specializing in the production and export of various seamless steel pipes. Dexin has the most advanced production equipment to ensure the best product quality. It has a complete production process and related equipment including coking, sintering, steelmaking and rolling, including related energy and power systems. At the same time, we have also achieved the integrity and systematization of modern steel industry production technology.

Our products are exported to North America, Europe, the Middle East, South America, Southeast Asia, Africa, Australia and other countries and regions with high quality and service. After 30 years of development, Zhentong Steel Pipe has become a domestic competitive steel enterprise group. Our company aims to provide customers with high-quality and low-cost seamless steel pipes and strive to create value for customers. Overseas customers are welcome to visit!
Partners

FAQ

Q1. Are you a trading company or a manufacturer?
A: We are a professional seamless steel pipe manufacturer based in Wuxi, Jiangsu Province, China. Our factory, workshop, and warehouse are all located here. We warmly welcome all clients to visit our facilities.

Q2. Can I visit your factory?
A: Absolutely! We welcome customers from all over the world to tour our factory and inspect our production process and quality system.

Q3. How can I get a quotation from you?
A: You can leave us a message on the website — we reply to every inquiry promptly. You may also chat with us via Trade Manager or find our contact information on the Contact Us page.

Q4. How is your pricing?
A: As a factory, our prices are very competitive. If you are interested in our products, feel free to reach out for a quote.

Q5. Do you offer custom product services?
A: Yes, we can manufacture based on your drawings or detailed specifications.

Q6. What is your delivery time?
A: Normally, the delivery time is around one month for a 40-foot container. For stock items, we can ship within 3 days.

Q7. What payment terms do you accept?
A: We accept T/T, 100% L/C at sight, cash, and Western Union. Other payment methods can be discussed as well.

Q8. What information should I provide to purchase seamless steel pipes?
A: Please specify the steel grade, outer diameter, length, quantity, and whether any coating is required — this helps us offer an accurate quote quickly.

Q9. How do you handle defective products?
A: Replacements are guaranteed. If any items are found defective, we will either credit them to your next order or send replacements free of charge.
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