Black coating , oil/varnish ,FBE,2PE,3PE, galvanized etc Packaging Detail: Packing in bundles or for the client’s requirementASTM A335–for Seamless Ferritic Alloy-Steel Pipe for High-Temperature ServiceASTM A519–for Seamless Carbon and Alloy Steel Mechanical TubingASTM A213–for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Super heater, and Heat-Exchange TubesASTM ASME (S)A-335/(S)A-335M Grade and Chemical CompositionOD:6-720MMWT:0.5-120MMLength:3-16MApplication:Petroleum, Chemical Engineering, Electricity, BoilerStandard:ASTM A335/A335M, ASTM A213/213M, DIN17175-79, JIS3467-88,GB5310-95Material:P5,T5,P11,P12,STFA22, P22, T91, T9,WB36Alloy pipe is a kind of seamless steel pipe, its performance is much higher than that of general seamless steel pipe, because this type of steel pipe contains more Cr, its high temperature resistance, low temperature resistance, corrosion resistance performance is much better than other Steel pipe , so the alloy pipe is widely used in petroleum, aerospace, chemical, electric power, boiler, military and other industries.Alloy tube refers to the use of alloy extrusion processing into a metal tubular material, which can have one or more closed through holes, wall thickness and uniform cross section, used in automobiles, ships, aerospace, aviation, electrical, agricultural, electro mechanical, home and other industries. Chemical Composition
C, %
Mn, %
P, %
S, %
Si, %
Cr, %
Mo, %
0.05-0.15
0.30-0.60
0.025 max
0.025 max
0.50-1.00
1.00-1.50
0.44-0.65
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
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
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
Note: (S)A335 P91 other chemical composition are : V 0.18~0.25; N 0.030~0.070; Ni ≤ 0.40; Al ≤ 0.04 ; Nb 0.06~0.10(S)A335 P92 other chemical composition are : V 0.15~0.25; N 0.030~0.070; Ni ≤ 0.40; Al ≤ 0.04 ; Nb 0.04~0.09; W 1.5~2.00 ; B 0.001~0.006
OD:6-720MM WT:0.5-120MM Length:3-16M Application:Petroleum, Chemical Engineering, Electricity, Boiler Standard:ASTM A335/A335M, ASTM A213/213M, DIN17175-79, JIS3467-88,GB5310-95 Material:P5,T5,P11,P12,STFA22, P22, T91, T9,WB36 Alloy pipe is a kind of seamless steel pipe, its performance is much higher than that of general seamless steel pipe, because this type of steel pipe contains more Cr, its high temperature resistance, low temperature resistance, corrosion resistance performance is much better than other Steel pipe , so the alloy pipe is widely used in petroleum, aerospace, chemical, electric power, boiler, military and other industries. Alloy tube refers to the use of alloy extrusion processing into a metal tubular material, which can have one or more closed through holes, wall thickness and uniform cross section, used in automobiles, ships, aerospace, aviation, electrical, agricultural, electro mechanical, home and other industries. Chemical Composition 
Note: (S)A335 P91 other chemical composition are : V 0.18~0.25; N 0.030~0.070; Ni ≤ 0.40; Al ≤ 0.04 ; Nb 0.06~0.10 (S)A335 P92 other chemical composition are : V 0.15~0.25; N 0.030~0.070; Ni ≤ 0.40; Al ≤ 0.04 ; Nb 0.04~0.09; W 1.5~2.00 ; B 0.001~0.006
