Boiler Tube

Boiler tube is installed inside boiler to heat water in order to generate seam, boiler is a a closed pressure vessel consist of varieties of types, water tube boiler and fire tube boiler are main types.

Tubes inside boiler withstand water and steam pressure, in order to prevent tubes leak in damage, quality boiler tubes are necessary as per standard, and qualified by inspection and testing.

Standard Specifications

ASTM A213 and A249 are main specifications for stainless steel boiler tubes, covering seamless tubes as well as welded tubes.

Tubes are processed by cold drawn, heat treated and pickling finishes, cleaning and smooth surface inside and outside should be made, quality tubes have the capacity of standing in high pressure and high temperature conditions.

Stainless Steel Grades

Boiler tube material selection is definitely important, different grades suit to different type of boilers, tubes have to meet complex boiler environments, like Heat Pass location and flow direction, boiler pressure, temperature, steaming rate, and boiler material etc.

Custom grades: TP304/TP304L, TP316/316L, TP321, 2205.

Heat resisting grades: 310S, 309S, TP321H, TP304H.

These stainless steels have high strength and good corrosion resistance in high temperate condition, good properties result from varieties addition of alloy, stainless steel boiler tube can meet high pressure and temperature requirement.

Boiler Tube Sizes and Dimensions

Tube outside diameter: 12.7 mm, 25.88 mm, 19.05 mm, 25.4 mm, 31.8 mm, 38.1 mm, and smaller or larger.

Tube wall thickness: 0.71 mm, 0.8 mm, 1.0 mm, 1.2 mm, 1.5 mm, 1.65 mm, and average wall or minimum wall.

Length is random, up to 30 meters.


Outside diameter: plus / minus 0.1 mm.

Wall thickness: plus / minus 5%.

Tolerances of OD and wall are as per standard or on request.

Quality Assurance

We have capability and capacity to ensure boiler tube in superior condition, with advanced inspection and testing procedures, standard tests include dimensional examination, visual checking, chemical composition, mechanical properties as well as non destructive test, 100% eddy current test.

A249 304L Stainless Steel Welded Tube ASTM A249 TP304L Stainless Steel Welded Tube

DONGSHANG stainless is a supplier of A249 304L stainless steel welded tube, A249 specification, 304L stainless steel grade, bright annealing finishing.

A213 904L Seamless Stainless Steel Tube ASTM A213 904L Seamless Stainless Steel Tube

DONGSHANG Stainless offer ASTM A213 904L seamless stainless steel tube for various applications, used in harsh environments because of 904L characters.

A213 TP321 Seamless Stainless Steel Tube ASTM A213 TP321 Seamless Stainless Steel Tube

DONGSHANG Stainless produce ASTM A213 TP321 seamless stainless steel tube, annealing and pickling finishing, applied for boiler, heat exchanger.

SA213 T9 T11 T12 T22 Seamless Stainless Steel Tube ASTM A213 T9 T11 T12 T22 Seamless Steel Tube

DONGSHANG Stainless is a manufacture in ASTM A213 T9 T11 T12 T22 seamless steel tube in China, applied in boiler tubes, superheater tubes, heat exchanger tubes.

A213 TP316L Seamless Stainless Steel Tube ASTM A213 TP316L Seamless Stainless Steel Tube

DONGSHANG Stainless produce A213 TP316L seamless stainless steel tube, heat treatment and pickling finishing, tube furnished to ASTM A213.

316L Stainless Steel Boiler Tube A249 A269 316L Stainless Steel Boiler Tube A249 / A269

DONGSHANG Stainless produce welded stainless steel boiler tube as ASTM A249 and ASTM A269 specification, 316/316L stainless steel grade and others.

astm a249 304-304l welded stainless steel tube ASTM A249 Welded Stainless Steel Tubing

We are a supplier in ASTM A249 welded stainless steel tubing many years, 304/304L, 316/316L stainless steel grade conforming to A249 specification.

TIG welding stainless steel tubing TIG Welding Stainless Steel Tubing

DONGSHANG STAINLESS produce TIG welding stainless steel tubing for boiler, heat exchanger, condenser, excellent performance in corrosive environment.