ASTM A335 GRADE P11 HOT ROLLED ALLOY STEEL SEAMLESS PIPES/TUBES
ASTM A335 Pipe (ASME S/A335, Chorme-Moly) is a seamless ferritic
Alloy-Steel Pipe for high temperature service. Pipe ordered to this specification shall be suitable for bending,
flanging (vanstoning), and similar forming operations, and for
fusion welding. Sometimes referred to as “P Grade”, chome moly pipe
is popular in P-Grades P5, P9, P11, P22, and P91. The most common use of grades P11, P22, and P91 is in the power
industry and petro-chemical plants, Grades P5 and P9 are commonly
used in refineries.
Chromium and molybdenum are important elements of P11. Chromium, or
chrome, improves high-temperature strength, increases oxidation
resistance and raises the tensile, yield and hardness at room
temperatures. Molybdenum increases the strength, elastic limit,
resistance to wear, impact qualities and hardenability. It
increases the resistance to softening, restrains grain growth and
makes chromium steel less susceptible to embrittlement. Moly is
also the most effective additive for increasing high temperature
creep strength, or creep resistance. It also enhances the corrosion
resistance of steel and inhibits pitting.
Due to the ferrimagnetic characteristics of iron, a few steel
alloys in A335 P11 pipes can be used in applications where their
reactions to magnetism are important. This includes transformers
and electric motors. P11 is also a popular grade for many different
applications such as:
- Turbine blades of jet engines
- Nuclear reactors
Enhanced properties of A335/SA335 P11
- Wear resistance
- Hot hardness
- Corrosion resistance
|Pipe End||Plain / Beveled / Vanished / Plastic Caps|
|Coating||Black / Galvanised / 3LPE / Turned / Peeled / Grinded / Polished /
Anti – Corrosion Oil|
|Length||15 Mtr max Cut to Length available|
|Heat Treatment||Spheroidizing / Full Annealing / Process Annealing / Isothermal
Annealing / Normalizing / Quenching / Martempering (Marquenching) /
Quench And Tempering / Austempering|
|Application||Oil & Gas / Hydro Carbon Process / Automotive / Boiler, Heat
Exchanger / Plumbing, HVAC & Firefighting / Structural /
General Engineering / Railways / Sewage & Waterwell|
|Quality Inspection||Third Party inspection is acceptable (SGS, BV etc.)|
TOLERANCE FOR SEAMLESS TUBING
|I.D tolerance (mm)||O.D tolerance (mm)||Straightness (mm)|
Relevant Standard & Grades Equivalency
-ASTM A335 Standard Specification for Seamless Ferritic Alloy Steel
Pipe for High -Temperature Service
-EN 10297-1 Seamless Circular Steel Tubes for Mechanical and
General Engineering Purpose
-DIN2391 Seamless Precision Steel Tubes
-JIS G3441 Alloy Steel Tubes for Machine Purposes
Chemical Requirements, Composition, %
|ASTM A335||P11||0.05-0.15||0.50-1.00||0.30-0.60||0.025 max||0.025 max||1.00-1.50||0.44-0.65|
|Standard||Steel Grade||Yield strength MPa (>=)||Tensile strength MPa (>=)|
Pipe may be either hot finished or cold drawn with the finishing
heat treatment noted below.
Heat treating can be required to achieve some of the above
What we can offer?
-We offer a wide range of steel products in a wide variety of
dimensions and executions, according to the common international
specifications or customize.
-Machining and heat treatment are available.
-Also, we advise you in choosing the right materials.
Below inspection will be done in the production.
(1) ray detection---RT;
(2) ultrasonic testing---UT;
(3) Magnetic Particle Testing-MT;
(4) penetration testing-PT;
(5) eddy current flaw detection-ET
In standard export packing and seaworthy material with hexagon shape bundle, covered with tarpaulin, in containers or in bulk, or
Payment & Delivery
1. Both T/T and L/C will be acceptable
2. Trade Terms: FOB, CIF, CFR
3. The delivery will be in 10-15 days if have stock; For customized
items, the delivery will be negotiated by both parties
4. Shipping by sea freight from Shanghai Port (PRC) for Bulk orders, by airfreight or express for samples
Shanghai Unite Steel Trading Co., Ltd
We are committed to integrate engineering steel resources in china
and serve the global engineering steel market. Our company has more
than 15 years of experience in steel researching, production,
managing and sales. And our team mostly are based on and worked in
national famous steel enterprise.
In the aspect of resources and information, we have established
cooperative and stronger relationship with nearly hundred
enterprises, either state-owned or private owned in china.
What’s more, we have built long, deep and close business
relationship with dozens of steel company, Sharing and holding
equities with several steel enterprises. Because of the close
cooperation with steel companies and our pioneering spirit, which
can ensure us stay at the top competition, and ensure our customers
get what they really want!
Q: Are you a manufacturer or merely a trader?
A: We are group of companies and owned manufacturer bases and
trading company. We specialized in special steel which include
alloy structural steel and carbon steel and stainless steel, etc.
All material are with high quality and competitive price.
Q: How do you guarantee the quality of your product?
A: Firstly, we can provide the certificates from the third party,
such as TUV, CE, if you need. Secondly, we have a complete set of
inspection system and every process is checked by QC. Quality is
the lifeline of enterprise survival.
Q: Delivery time?
A: We have ready stock for most of material grades in our
warehouse. If the material doesn't have stock, the delivery lead
time is about 5-30 days after receiving your prepayment or firm
Q: What is the payment term?
A: T/T or L/C.
Q: Can we visit your company and factory?
A: Yes, warmly welcome! We can book the hotel for you before you
come to China and arrange our driver to our airport to pick you up
when you come.