A335 Seamless Steel Pipe
Classification :
Carbon Steel Pipe
Keywords :
Carbon Steel Pipe
PRODUCT DETAILS
A335 Seamless Steel Pipe Description
ASTM A335 steel pipe may be hot finished or cold drawn and subjected to the following finishing heat treatment. The specification covers "chrome-molybdenum" seamless pipes with excellent corrosion resistance and high temperature tensile strength. Generally, ASTM A335 P11, P22, and P91 pipelines are used for power generation and downstream oil and gas, and P5 and P9 grades are used for refinery applications.
Product Parameters
|
Product Name |
A335 Seamless Steel Pipe |
|
|
Standard |
EN/DIN/JIS/ASTM/BS/ASME/AISI etc. |
|
|
Outer Diameter |
Seamless: 1/4"-36" |
Welding: 21.3mm-3620mm |
|
Round Tube: 1/2"-10" |
Square Tube/Rectangular Tube: 15x15mm-400x600mm |
|
|
Wall Thickness |
Seamless: 1.25mm-50mm |
Welding: 1.65mm-65mm |
|
Length |
3-12 meters, Support customization |
|
|
Surface Process |
Bright, Polished, Black |
|
|
Other Services |
Machining(cnc), Centerless Grinding(cg), Heat Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting, Bending, Small Machining, etc. |
|
Chemical Composition
|
A335 |
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 |
0.5 |
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 |
0.5 |
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 |
0.5 |
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 |
0.5 |
2.65~3.35 |
0.80~1.60 |
|
P22 |
K21590 |
0.05~0.15 |
0.30~0.60 |
0.025 |
0.025 |
0.5 |
1.90~2.60 |
0.87~1.13 |
|
P91 |
K91560 |
0.08~0.12 |
0.30~0.60 |
0.02 |
0.01 |
0.20~0.50 |
8.00~9.50 |
0.85~1.05 |
|
P92 |
K92460 |
0.07~0.13 |
0.30~0.60 |
0.02 |
0.01 |
0.5 |
8.50~9.50 |
0.30~0.60 |
Mechanical Properties
|
A335 |
UNS |
Yield Strength Ksi |
Tensile Strength Ksi |
Elongation % |
|
P1 |
K11522 |
30 |
55 |
30 |
|
P2 |
K11547 |
30 |
55 |
30 |
|
P5 |
K41545 |
40 |
70 |
30 |
|
P9 |
S50400 |
30 |
60 |
30 |
|
P11 |
K11597 |
30 |
60 |
20 |
|
P12 |
K11562 |
32 |
60 |
30 |
|
P22 |
K21590 |
30 |
60 |
30 |
|
P91 |
K91560 |
60 |
85 |
20 |
Scope of Application
The specification covers "chrome-molybdenum" seamless pipes with excellent corrosion resistance and high temperature tensile strength. Generally, ASTM A335 P11, P22, and P91 pipelines are used for power generation and downstream oil and gas, and P5 and P9 grades are used for refinery applications.
| USA | Japan | Germany | U.K. |
|
France | Italy | Spain | Switzerland | China | |
|
AISI/SAE |
JIS |
W‐nr. |
DIN |
BS |
EN |
AFNOR |
UNI |
UNE |
SS |
GB |
|
A570.36 |
STKM 12A |
1.0038 |
RSt.37‐2 |
4360 |
‐ |
E 24‐2 |
‐ |
‐ |
1311 |
15 |
|
- |
STKM 12C |
- |
- |
40 C |
- |
Ne |
- |
- |
- |
- |
|
1015 |
‐ |
1.0401 |
C15 |
080M15 |
‐ |
CC12 |
C15, C16 |
F.111 |
1350 |
15 |
|
1020 |
‐ |
1.0402 |
C22 |
050A20 |
2C |
CC20 |
C20, C21 |
F.112 |
1450 |
20 |
|
1213 |
SUM22 |
1.0715 |
9SMn28 |
230M07 |
1A |
S250 |
CF9SMn28 |
F.2111 |
1912 |
Y15 |
|
11SMn28 |
||||||||||
|
12L13 |
SUM22L |
1.0718 |
9SMnPb28 |
‐ |
‐ |
S250Pb |
CF9SMnPb28 |
11SMnPb28 |
1914 |
‐ |
|
‐ |
‐ |
1.0722 |
10SPb20 |
‐ |
‐ |
10PbF2 |
CF10Pb20 |
10SPb20 |
‐ |
‐ |
|
1215 |
‐ |
1.0736 |
9SMn36 |
240M07 |
1B |
S300 |
CF9SMn36 |
12SMn35 |
‐ |
Y13 |
|
12L14 |
‐ |
1.0737 |
9SMnPb36 |
‐ |
‐ |
S300PB |
CF9SMnPb36 |
12SMnP35 |
1926 |
‐ |
|
1015 |
S15C |
1.1141 |
Ck15 |
080M15 |
32C |
XC12 |
C16 |
C15K |
1370 |
15 |
|
1025 |
S25C |
1.1158 |
Ck25 |
‐ |
‐ |
‐ |
‐ |
‐ |
‐ |
25 |
|
A572-60 |
‐ |
1.890 |
StE380 |
4360 55 |
‐ |
‐ |
FeE390KG |
‐ |
2145 |
‐ |
|
1035 |
‐ |
1.0501 |
C35 |
060A35 |
‐ |
CC35 |
C35 |
F.113 |
1550 |
35 |
|
1045 |
‐ |
1.0503 |
C45 |
080M46 |
‐ |
CC45 |
C45 |
F.114 |
1650 |
45 |
|
1140 |
‐ |
1.0726 |
35S20 |
212M36 |
8M |
35MF4 |
‐ |
F210G |
1957 |
‐ |
|
1039 |
‐ |
1.1157 |
40Mn4 |
150M36 |
15 |
35M5 |
‐ |
‐ |
‐ |
40Mn |
|
1335 |
SMn438(H) |
1.1167 |
36Mn5 |
‐ |
‐ |
40M5 |
‐ |
36Mn5 |
2120 |
35Mn2 |
|
1330 |
SCMn1 |
1.1170 |
28Mn6 |
150M28 |
14A |
20M5 |
C28Mn |
‐ |
‐ |
30Mn |
|
1035 |
S35C |
1.1183 |
Cf35 |
060A35 |
‐ |
XC38TS |
C36 |
‐ |
1572 |
35Mn |
|
1045 |
S45C |
1.1191 |
Ck45 |
080M46 |
‐ |
XC42 |
C45 |
C45K |
1672 |
Ck45 |
|
1050 |
S50C |
1.1213 |
Cf53 |
060A52 |
‐ |
XC48TS |
C53 |
‐ |
1674 |
50 |
|
1055 |
‐ |
1.0535 |
C55 |
070M55 |
9 |
‐ |
C55 |
‐ |
1655 |
55 |
|
1060 |
‐ |
1.0601 |
C60 |
080A62 |
43D |
CC55 |
C60 |
‐ |
‐ |
60 |
|
1055 |
S55C |
1.1203 |
Ck55 |
070M55 |
‐ |
XC55 |
C50 |
C55K |
‐ |
55 |
|
1060 |
S58C |
1.1221 |
Ck60 |
080A62 |
43D |
XC60 |
C60 |
‐ |
1678 |
60Mn |
|
1095 |
‐ |
1.1274 |
Ck101 |
060A96 |
‐ |
XC100 |
‐ |
F.5117 |
1870 |
‐ |
|
W1 |
SK3 |
1.1545 |
C105W1 |
BW1A |
‐ |
Y105 |
C36KU |
F.5118 |
1880 |
‐ |
|
W210 |
SUP4 |
1.1545 |
C105W1 |
BW2 |
‐ |
Y120 |
C120KU |
F.515 |
2900 |
‐ |
Packing and delivery
Established in 2005, we are a key steel manufacturer boasting a 400,000㎡ production site and an annual output of 2.5 million tons. Our offerings span mild steel, alloy plates, coated steel coils, and welded pipes, serving industries like machinery, shipbuilding, and infrastructure.

Customer Visit
Our market reach covers 25+ nations, with a focus on building enduring client partnerships through consistent supply and responsive service. Dedicated to progress and eco-friendliness, we prioritize tech upgrades and low-carbon production to fuel sector development.
HONOR
Certified by ISO 9001, SGS, and API, we guarantee top-tier quality and safety. Our market reach covers 25+ nations, with a focus on building enduring client partnerships through consistent supply and responsive service.
APPLICATION
Ship
Chemical Industry
Electricity
Oil and gas transportation
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