Seamless Alloy Steel Tube
Type: Alloy Pipe, Alloy Tube, Alloy Steel Pipe, Alloy Steel Tube
Application: In Petroleum, Aerospace, Chemical, Power, Boilers, Military Industry
Specification: Outside Diameter: 1/8'' ~ 26''
Wall Thickness: SCH 30, 30, 40, 60, 80, 120, 140, 160, XS, XXS, STD
Length: Single Random, Double Random, Cut Length max to 23m
Standard & Grade: ASTM A333, A335 P5/P9/P11/P22/P91, DIN 17175, JIS G3458
End: Plain End, Beveled End, Thread End
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.
| Product |
SEAMLESS / ERW / SAW ALLOY STEEL PIPE |
| Dimension |
6 mm - 1080 mm |
| Thickness |
1mm - 135 mm |
| Length |
3 m - 12 m or according to the requirements of clients |
| Standard |
ASTM GB DIN |
| Steel grade |
A106/53/179/214/192/210 A/B/C
ST37.2/35.4/35.8/52/52.3/52.4/42/45
10# 20# 45#
P2, P12, P11, P22, P5, P9, P91
T2, T11,T5,T9,T22, 4140, 12CrMo, 15CrMo, 12Cr2Mo, 1Cr5Mo, 2CrMo4, 1Cr9Mo, 10CrMo910, etc. |
| Trade terms |
FOB/CIF/CFR |
| Payment terms |
T/T, L/C |
| Delivery time |
10 or according to the real quantity of the tubes |
| Surface treatment |
Black painting
Varnish painting
3PE
Hot galvanized
or other coating according to your requirements
Bare tube |
| End of tubes |
Beveled, plain, thread, plastic caps |
| Inspection |
Ultrasonic examination, eddy inspection, hydrosttic testing etc. |
| Package |
Bundles, lossen or according to your requirements |
| Certificate |
API 5L/5CT, ISO, PED etc. |
Technical data
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 |
| 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 |
Standard
ASTM A335--for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
ASTM A519--for Seamless Carbon and Alloy Steel Mechanical Tubing
ASTM A213--for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
ASTM ASME (S)A-335/(S)A-335M Grade and Chemical Composition
| Grade |
UNS |
C≤ |
Mn |
P≤ |
S≤ |
Si≤ |
Cr |
Mo |
| P1 |
K11522 |
0.10~0.20 |
0.30~0.80 |
0.025 |
0.025 |
0.10~0.50 |
- |
0.44~0.65 |
| P2 |
K11547 |
0.10~0.20 |
0.30~0.61 |
0.025 |
0.025 |
0.10~0.30 |
0.50~0.81 |
0.44~0.65 |
| P5 |
K41545 |
0.15 |
0.30~0.60 |
0.025 |
0.025 |
0.50 |
4.00~6.00 |
0.44~0.65 |
| P5b |
K51545 |
0.15 |
0.30~0.60 |
0.025 |
0.025 |
1.00~2.00 |
4.00~6.00 |
0.44~0.65 |
| P5c |
K41245 |
0.12 |
0.30~0.60 |
0.025 |
0.025 |
0.50 |
4.00~6.00 |
0.44~0.65 |
| P9 |
S50400 |
0.15 |
0.30~0.60 |
0.025 |
0.025 |
0.50~1.00 |
8.00~10.00 |
0.44~0.65 |
| P11 |
K11597 |
0.05~0.15 |
0.30~0.61 |
0.025 |
0.025 |
0.50~1.00 |
1.00~1.50 |
0.44~0.65 |
| P12 |
K11562 |
0.05~0.15 |
0.30~0.60 |
0.025 |
0.025 |
0.50 |
0.80~1.25 |
0.44~0.65 |
| P15 |
K11578 |
0.05~0.15 |
0.30~0.60 |
0.025 |
0.025 |
1.15~1.65 |
- |
0.44~0.65 |
| P21 |
K31545 |
0.05~0.15 |
0.30~0.60 |
0.025 |
0.025 |
0.50 |
2.65~3.35 |
0.80~1.60 |
| P22 |
K21590 |
0.05~0.15 |
0.30~0.60 |
0.025 |
0.025 |
0.50 |
1.90~2.60 |
0.87~1.13 |
| P91 |
K91560 |
0.08~0.12 |
0.30~0.60 |
0.020 |
0.010 |
0.20~0.50 |
8.00~9.50 |
0.85~1.05 |
| P92 |
K92460 |
0.07~0.13 |
0.30~0.60 |
0.020 |
0.010 |
0.50 |
8.50~9.50 |
0.30~0.60 |
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
