Alloy Steel Pipes
ASTM A335/A335M P1
ASTM A335/A335M P2
ASTM A335/A335M P5
ASTM A335/A335M P5b
ASTM A335/A335M P5c
ASTM A335/A335M P9
ASTM A335/A335M P11
ASTM A335/A335M P12
ASTM A335/A335M P22
ASTM A335/A335M P23
ASTM A335/A335M P36
ASTM A335/A335M P91
ASTM A335/A335M P92
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ASTM A335/ASME SA335 Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
Standard: ASTM A335, ASME SA335
Equivalent Standards: EN 10216-2, ASTM A213, ASME SA213, GOST 550-75, NBR 5603
Material: P5c, K41245
Equivalent Material: T5c
Chemistry Composition
C, %
Mn, %
P, %
S, %
Si, %
Cr, %
Mo, %
Ti, %
0.12 max
0.30-0.60
0.025 max
0.025 max
0.50 max
4.00-6.00
0.45-0.65
4*C-0.7
Mechanical Properties
Tensile Strength , MPa
Yield Strength, MPa
Elongation, %
415 min
205 min
30 min
Outside Diameter & Tolerance
ASTM A450
Hot rolled
Outside Diameter, mm
Tolerance, mm
OD≤101.6
+0.4/-0.8
101.6<OD≤190.5
+0.4/-1.2
190.5<OD≤228.6
+0.4/-1.6
Cold Drawn
Outside Diameter, mm
Tolerance, mm
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≤190.5
+0.38/-0.64
190.5<OD≤228.6
+0.38/-1.14
ASTM A530 & ASTM A335
NPS
Outside Diameter, inch
Tolerance, mm
1/8≤OD≤1-1/2
±0.40
1-1/2<OD≤4
±0.79
4<OD≤8
+1.59/-0.79
8<OD≤12
+2.38/-0.79
OD>12
±1%
Wall thickness & Tolerance
ASTM A450
Hot rolled
Outside Diameter, mm
Tolerance, %

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
Outside Diameter, mm
Tolerance, %
OD≤38.1
+20/-0
OD>38.1
+22/-0
ASTM A530
NPS
Outside Diameter, inch
Tolerance, %
1/8≤OD≤2-1/2
+20.0/-12.5
3≤OD≤18, WT/OD≤5%
+22.5/-12.5
3≤OD≤18, WT/OD>5%
+15.0/-12.5
OD≥20, WT/OD≤5%
+22.5/-12.5
OD≥20, WT/OD>5%
+15.0/-12.5
ASTM A335/A335M specification covers nominal wall and minimum wall seamless ferritic alloy-steel pipe intended for high temperature service. Pipe ordered to ASTM A335/A335M specification shall be suitable for bending, flanging (vanstoning), and similar forming operations, and for fusion welding.
Manufacture: pipes shall be made by the seamless process and shall be either hot finished or cold drawn with the finishing treatment.
Heat Treatment: full or isothermal anneal, normalize and temper.
Inspection & Test: chemistry composition analysis, tensile test, hardeness test, flattening test, flaring test, NDT, surface inspection and dimension check.
Length: 5800mm; 6000mm; 6096mm; 11800mm; 12000mm; and so on.
Max length: 16000mm; Max outside diameter: 1750mm; Max wall thickness: 150mm; finning and studded process can be provided.
Option: shot blasting on the outside surface to remove mill scale, make the surface matte colour; surface polishing as preparation work done for further processing, for instance finning.
Keyword: Seamless Ferritic Alloy Steel Pipe, High Pressure Steel Pipe, Boiler Steel Pipe, ASME SA335, P5c, ASTM A335
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