Boiler Tube SA210 A1, Superheater Tube A213 T22

 Boiler Tube SA210 A1 is the standard covers seamless medium-carbon steel boiler and superheater tubes. Seamless medium carbon steel pipe for boiler tube and boiler flue pipe, including a minimum wall thickness of the security side, the dome and the support tube and superheater tubes.

Boiler tubes is tubes used for boiler systems, like boilers for civil use in life, general industrial boilers, locomotive boilers and thermal power boiler. According to different steam pressure, thermal power boilers are divided to low, medium, high pressure, high pressure, sub-critical pressure, supercritical pressure boilers, ultra-supercritical units. Production standards and materials for boilers tubes: BS3059 Steel boiler and superheater tubes
SA-210C (25MnG): It is the steel grade in ASME SA-210 standard. It is a small-diameter carbon-manganese steel tube for boiler and superheater. It is a pearlitic heat-resistant steel. China transplanted it to GB5310 in 1995, named 25MnG. Its chemical composition is simple. Except for the high content of carbon and manganese, its yield strength is about 20% higher than that of 20G, while its plasticity and toughness are similar to that of 20G. The steel has simple production process and good cold and hot working properties. Replacing 20G with it can reduce wall thickness, material consumption and heat transfer condition of boilers. Its working position and temperature are basically the same as 20G. It is mainly used for water wall, economizer, cryogenic superheater and other components whose working temperature is lower than 500 C.
ASTM A210/ASME SA210 Standard Specification for Seamless Medium-Carbon Steel Boiler and Superheater Tubes
Mechanical Properties:
Grade C(Max) Mn Si(Min) P(Max) S(Max)
A1 0.27 Max.0.93 0.10 0.035 0.035
C 0.35 0.29~1.06 0.10 0.035 0.035
Chemical composition:
Grade Tensile Strength(Mpa) Yield Strength(Mpa) Elongation (%)
A1 ≥ 415 ≥ 255 ≥ 30
C ≥ 485 ≥ 275 ≥ 30
Outside Diameter & Tolerance
Pcorcess Outside Diameter , mm Tolerance, %
Hot rolled OD≤101.6 +0.4/-0.8
101.6<OD≤127 +0.4/-1.2
Cold Drawn OD<25.4 ±0.10
25.4≤OD≤38.1 ±0.15
38.1<OD<50.8 ±0.20
50.8≤OD<63.5 ±0.25
63.5≤OD<76.2 ±0.30
76.2≤OD≤101.6 ±0.38
101.6<OD≤127 +0.38/-0.64
Wall thickness & Tolerance
Pcorcess Outside Diameter , mm Tolerance, %
Hot rolled OD≤101.6, WT≤2.4 +40/-0
OD≤101.6, 2.4<WT≤3.8 +35/-0
OD≤101.6, 3.8<WT≤4.6 +33/-0
OD≤101.6, WT>4.6 +28/-0
OD>101.6, 2.4<WT≤3.8 +35/-0
OD>101.6, 3.8<WT≤4.6 +33/-0
OD>101.6, WT>4.6 +28/-0
Cold Drawn OD≤38.1 +20/-0
OD>38.1 +22/-0
ASTM A210 / A210M Tube Wall Thickness Tolerance
Seamless, Cold-Finished Tubes
Outside Diameter
In. (mm) Wall thickness Tolerance %
Over (+) Under (-)
1 ½ (38.1) and under 20 0
Over 1½ (38.1) 22 0
ASTM A210 / A210M Tube Outside Diameter Tolerance
Cold-Finished Seamless Tubes
Outside Diameter
In. (mm) Permissible Variations In. (mm)
Over (+) Under (-)
Under 1 (25.4) 0.004 (0.10) 0.004 (0.10)
1 to 1 ½ (25.4 to 38.1), Incl 0.006 (0.15) 0.006 (0.15)
Over 11⁄2 to 2 (38.1 to 50.8), Excl 0.008 (0.20) 0.008 (0.20)
2 to 21⁄2 (50.8 to 63.5), Excl 0.010 (0.25) 0.010 (0.25)
21⁄2 to 3 (63.5 to 76.2), Excl 0.012 (0.30) 0.012 (0.30)
ASTM A210 / A210M Tube Cut Length Tolerance
 Cold-Finished Seamless Tubes
Outside Diameter,
In.(mm) Cut Length, in.(mm)
Over (+) Under (-)
All Sizes 3⁄16 [5] 0 [0]
Under 2 (50.8) 1⁄8 [3] 0 [0]
2 (50.8) and over 3⁄16 [5] 0 [0]
Under 2 (50.8) 1⁄8 [3] 0 [0]
2 (50.8) and over 3⁄16 [5] 0 [0]
These permissible variations in length apply to tubes before bending. They apply to cut lengths up to and including 24 ft [7.3 m]. For lengths greater than 24 ft [7.3 m], the above over-tolerances shall be increased by 1⁄8 in. [3 mm] for each 10 ft [3 m] or fraction thereof over 24 ft or 1⁄2 in. [13 mm], whichever is the lesser.
ASTM A210 / A210M Tube Hydrostatic Test Pressures
Each tube shall be subjected to the hydrostatic pressure test, or instead of this test, a nondestructive test may be used when specified by the purchaser.
Hydrostatic Test Pressures
Outside Diameter of Tube, in. [mm] Hydrostatic Test Pressure, psi [MPa]
Under 1 [25.4] 1000 [7]
1 to 11⁄2 [25.4 to 38.1], excl 1500 [10]
11⁄2 to 2 [38.1 to 50.8], excl 2000 [14]
2 to 3 [50.8 to 76.2], excl 2500 [17]
ASTM A210 / A210M Flattening Test
One flattening test shall be made on specimens from each end of one finished tube from each lot, but not the one used for the flaring test. Tears or breaks occurring at the 12 or 6 o’clock positions on Grade C tubing with sizes of 2.375 in. [60.3 mm] in outside diameter and smaller shall not be considered a basis for rejection.
Seamless pipe flaring test
ASTM A210 / A210M Flaring Test
One flaring test shall be made on specie- men from each end of the one finished tube from each lot, but not the one used for the flattening test.
Ordering Information
Orders for ASTM A210 / A210M, ASME SA210 should include the following, as required, to describe the desired material adequately:
Quantity (feet, meters, or number of lengths),
Name of material (seamless tubes),
Manufacture (hot-finished or cold-finished),
Size (outside diameter and minimum wall thickness),
Length (specific or random),
Optional requirements,
Test report required (see section on Certification of Specification A 450/A 450M),
Specification designation,
Special requirements.
When these products are to be used in applications conforming to ISO Recommendations for Boiler Construction, the requirements of Specification ASTM A 520 , shall supplement and supersede the requirements of this specification.
ASTM/ASME A/SA106GR, B/A/SA53B/A/SA179,A/SA333GR.6A/SA192A/SA210GR.A1,C,A519,API5L, EN10255P195TR1/TR2, EN110216-1P235TR1/TR2, EN10216-2195GH, P235GH, P265GH;
DIN17175,ST35.8/45.8,DIN1629,ST37.0/ST44.0/ST52.0,DIN2391,JISG3454,STPG 370/STPG410,JIS,G3461,STB340/STB410,SA213,T11,T12,P11,P22,BS3059-I,320BS3059-II 360,440,243,620.
1) Size: 6mm-168.3mm 
2) Length to: 16m. 
3) WT: 1MM-14MM.
The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining value from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unless the "m" designation of this specification is specified in the order.
Note: Mill test certificates will be issued according to EN10204.3 3.1 or 3.2
The tubes Shall be Seamless, and the testing shall be as per A 450 / A450M.
BS3605 Austenitic stainless steel pipes and tubes for pressure purposes
A192/A192M-91(1996) Specification for Seamless Carbon Steel Boiler Tubes for High-Pressure Service
A209 A209/A209M-98 Specification for Seamless Carbon-Molybdenum Alloy-Steel Boiler and Super heater Tubes
A210 A210/A210M-96 Specification for Seamless Medium-Carbon Steel Boiler and Superheater Tubes
A250 A250/A250M-95 Specification for Electric-Resistance-Welded Ferritic Alloy-Steel Boiler and Superheater Tubes
ASTM B622 Seamless ferritic and austenitic alloy-steel boiler, superheater, and heat-exchanger tubes
A213 A213/A213M-99a Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
A249 A249/A249M-98e1 Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes
low carbon steel tubes for heat exchanger and boilers 
ASTM A179, DIN17175, BS3602, NFA A49215, JIS G 3461, A192, A210 Grade A1,A210 Grade C, ASTM A556, A214, DIN17177, BS 3059, NFA A49242, JIS G3461, A226, GB3087, GB5310, ASME SA106, ASME SA333, ASME SA335, DIN17175, EN10216-2
Alloy steel tubes for heat exchanger and boilers alloy steel tubes used for boiler use
ASTM A209, T1,T1A, T1b 
ASTM A199,T4,T5,T9,T11,T21,T22,T91 
ASTM A213,T2, T5,T5b,T5c, T9, T11, T12, T17,T21,T22,T91,T92 
ASTM A334, Grade1,3,6,7,8,91,112. DIN17173, BS3603, JIS G3464 
BS3606, JIS G3462 
DIN17176, BS3604
ASME SA 333: SA333 Grade1, SA333 Grade 6
ASME SA335: SA335 P11, SA335 P12, SA335 P22, SA335 P5, SA335 P1, SA335 P9,
DIN 17175: St45.8, 15Mo3, 16Mo3, 13CrMo44, 10CrMo910, 14MoV6-3, X10CrMoVNb9-1 = T91 / P91
JIS G3461: STB 340, STB 410
EN 10216-1: P195 TR1, P235 TR2
ASME SA 106: SA 106B, SA 106C10, 20, 20G, 20MnG, 25MnG, 15CrMoG, 12Cr2MoG, 12Cr1MoVG, 10Cr9Mo1VNb, SA106B, SA106C, SA210A1, SA210C, SA333 I, SA333 VI, SA335 P5, SA335 P11, SA335 P12, SA335P22, SA335 P91, SA335 P92, 15NiCuMoNb5-6-4, 1Cr18Ni9 (TP304H, X6CrNi18-10), 1Cr19Ni11Nb (TP347H, X7CrNiNb18-10), TP321H, TP347HFG, CODE CASE 2328-1 (S30432), TP310HCbN, 20G, 12CrMoG, 15CrMoG, 12Cr1MoVG, 25MnG, 15MoG, 12Cr2MoGMechanical properties