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Your Reliable Supplier of Seamless Boiler & Heat Exchanger Tubes

CHANGZHOU FYN METAL TECHNOLOGY CO., LTD. supplies carbon steel, alloy steel, and stainless steel seamless tubes for boilers, heat exchangers, and pressure equipment, in accordance with ASTM/ASME, EN, DIN, and JIS standards. With approximately 30,000 tons in annual sales, TÜV-certified management systems, PED certification, and full material traceability, we provide reliable tube supply and processing services to meet customers' technical and project requirements.
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30,000

Tons In Annual Sales

40

Maximum Tube Length

100%

Material Traceability

3

TÜV-Certified ISO Management Systems

Automotive field

We are experts in metal parts, for example Forging parts (hot forging and cold forging), casting parts (precision casting and die casting),Metal stamping parts, CNC machining parts, metal injection molding (MIM) parts,Plastic injection parts, sanitary valves, various hardware products, etc.

Industrial field

Electronics & Medical care

Our Prodcuts

Explore our range of seamless boiler and heat exchanger tubes in carbon steel, alloy steel, and stainless steel. Supplied to ASTM/ASME, EN, DIN, and JIS standards, with a wide selection of grades, sizes, and processing options to meet your specific requirements.

ASTM A179 Seamless Cold-Drawn Low-Carbon Steel Heat Exchanger & Condenser Tubes

ASTM A179 seamless cold-drawn low-carbon steel tubes are designed for tubular heat exchangers, condensers and similar heat-transfer equipment. Manufactured by the seamless cold-drawn process and heat treated after final drawing, A179 tubes provide controlled dimensions, low hardness and reliable formability for tube expansion, flaring and heat exchanger fabrication.

ASTM A210 Seamless Medium-Carbon Steel Boiler & Superheater Tubes

ASTM A210/A210M seamless medium-carbon steel tubes are designed for boiler tubes, boiler flues, superheater flues and safe ends. Available in Grade A-1 and Grade C, FYN supplies cold-drawn and cold-rolled tubes with project-specific heat treatment, testing, inspection and documentation.

ASTM A213 Seamless Alloy Steel Boiler, Superheater & Heat Exchanger Tubes

ASTM A213 covers seamless ferritic and austenitic alloy-steel tubes for boilers, superheaters and heat exchangers. Available in a wide range of ferritic and austenitic grades, FYN supplies cold-finished tubes with grade-specific heat treatment, testing, inspection and documentation to project requirements. Material: Ferritic & Austenitic Alloy Steel Typical Grades: T5 / T9 / T11 / T12 / T22 / T91 / T92 / TP304 / TP304H / TP316 / TP316H / TP321 / TP347 / TP347H

EN 10216-2 Seamless Steel Tubes for Pressure Purposes

EN 10216-2 seamless steel tubes are designed for pressure equipment requiring specified elevated-temperature properties. Available in non-alloy and alloy grades including P235GH, P265GH, 16Mo3, 13CrMo4-5 and 10CrMo9-10, FYN supplies cold-finished tubes with grade-specific heat treatment, inspection and documentation to project requirements.

ASTM B338 Titanium Heat Exchanger & Condenser Tubes

Titanium & Titanium Alloys · Seamless / Welded · Condensers, Evaporators & Heat Exchangers ASTM B338 titanium and titanium-alloy tubes are designed for surface condensers, evaporators, and heat exchangers. The standard covers seamless and welded tubing across multiple titanium grades, including commercially pure titanium and corrosion-resistant alloyed grades. Material selection is based on titanium grade, manufacturing method, service medium, and equipment operating conditions.

DIN 17175 Seamless Heat-Resistant Steel Tubes

DIN 17175 seamless heat-resistant steel tubes were specified for elevated-temperature boiler, steam and pressure applications. Although DIN 17175 is now withdrawn and superseded by EN 10216-2, FYN can review legacy requirements for grades such as St35.8, St45.8, 15Mo3, 13CrMo44 and 10CrMo910 for replacement and existing-equipment projects.

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