Carbon Steel Pipes
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BS 3059-2 360
BS 3059-2 440
BS 3059-2 243
BS 3059-2 620-460
BS 3059-2 622-490
BS 3059-2 629-470
BS 3059-2 629-590
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BS 3059 Standard Specification for Steel Boiler and Superheater Tubes Part 2. Carbon, Alloy and Austenitic Stainless Steel Tubes with Specified Elevated Temperature Properties
Standard: BS 3059-2
Equivalent Standards: EN 10216-2, DIN 17175, NF A 49-213, NBR 5594, GB 3087, GB 5310, JIS G3461
Material: 629-470
Equivalent Materials: T91, K90901, X10CrMoVNb9-1, 1.4903, P91, K91560
Chemistry Composition
C, %
Mn, %
Si, %
P, %
S, %
Cr, %
Mo, %
0.15 max
0.30-0.60
0.25-1.00
0.030 max
0.030 max
8.00-10.0
0.90-1.10
Mechanical Properties
Tensile Strength , MPa
Yield Strength , MPa
Elongation, %
470-620
185 min
20 min
Outside Diameter & Tolerance
Type
Outside Diameter, mm
Tolerance, mm
Seamless class 1 (S1)
OD≤127
±0.50% or min ±0.10
Seamless class 2 (S2)
OD≤127
±0.75% or min ±0.30
Wall thickness & Tolerance
Type
Outside Diameter, mm
Tolerance, %
Seamless class 1 (S1)
OD≤127
±7.5
Seamless class 2 (S2)
OD≤127
±10.0
BS 3059-2 specifies requirements for plain end, seamless and welded, carbon and alloy steel tubes and for cold finished seamless austenitic steel tubes, not exceeding 127mm outside diameter and not exceeding 12.5mm thickness for use in boilers and superheaters. Tubes manufactured in accordance with BS 3059-2 have specified room temperature properties and specified proof stress values at elevated temperatures.
Manufacture: the tubes made by cold drawn process.
Heat Treatment: the tubes are heat treated by annealed temperature 850-950°C.
Delivery Condition: black or nitrogen protection.
Inspection & Test: chemistry composition analysis, tensile test, flattening test, flaring test, NDT, surface inspection and dimension check.
Length: 5800mm; 6000mm; 6096mm; 7315mm; 11800mm; and so on.
Max length: 30000mm, U bending can be offered, also see the fin tubes.
Download BS 3059-2 629-470 Product Manual
Keyword: boiler steel pipes, superheater tubes, BS 3059-2
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