Hot rolling STBA25 STBA22 STBA24 STBA20 STBA23 STBA26 convenient installation Carbon steel seamless steel pipe tube
ASTM A335 / ASME SA335 / ASTM A213 / ASME SA213
Hot Rolled / Cold Drawn
Outer Diameter Size
A335 - 3/8" NB To 30" NB (Nominal Bore Size), A213 -3/8"OD To 5"OD
Schedule 20 To Schedule XXS (Heavier On Request) Up to 250 mm Thickness
5 To 7 Meters, 09 To 13 Meters, Single Random Length, Double Random Length And Customize Size.
All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM, ASME, API.
Plain Ends / Beveled Ends / Coupling
Value Added Services
Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Galavanizing / Heat Treatment
Description of application effectAlloy steel is steel that is alloyed with a variety of elements in total amounts between 1.0% and 50% by weight to improve its mechanical properties. Alloy steels are broken down into two groups: low-alloy steels and high-alloy steels. The difference between the two is somewhat arbitrary: Smith and Hashemi define the difference at 4.0%, while Degarmo, et al., define it at 8.0%.Most commonly, the phrase "alloy steel" refers to low-alloy steels.Strictly speaking, every steel is an alloy, but not all steels are called "alloy steels". The simplest steels are iron (Fe) alloyed with carbon (C) (about 0.1% to 1%, depending on type). However, the term "alloy steel" is the standard term referring to steels with other alloying elements added deliberately in addition to the carbon. Common alloyants include manganese (the most common one), nickel, chromium, molybdenum, vanadium, silicon, and boron. Less common alloyants include aluminum, cobalt, copper, cerium, niobium, titanium, tungsten, tin, zinc, lead and zirconium. This specification2 covers nominal wall and minimum wall seamless ferritic alloy-steel pipe intended for high temperature service. Pipe ordered to this specification shall be suitable for bending, flanging (vanstoning), and similar forming operations, and for fusion welding. Selection will depend upon design, service conditions, Mechanical Properties, and high-temperature characteristics. 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”, Chrome 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. A335 is often called chrome moly pipe because of the chemical makeup of Molybdenum (Mo) and Chromium (Cr). Molybdenum increases the strength of steel as well as the elastic limit, resistance to wear, impact qualities, and hardenability. Moly increases the resistance to softening, restrains grain growth and makes chromium steel less susceptible to embrittlement. Moly is the most effective single additive that increases high temperature creep strength. It also enhances the corrosion resistance of steel, and inhibits pitting. Chromium (or chrome) is the essential constituent of Stainless Steel. Any steel with 12% or more Chrome is considered stainless. Chrome is virtually irreplaceable in resisting oxidation at elevated temperatures. Chrome raises the tensile, yield, and hardness at room temperatures. The composition chrome moly alloy steel pipe make it ideal for use in power plants, refineries, petro chemical plants, and oil field services where fluids and gases are transported at extremely high temperatures and pressures. stocks a full range of the following A335 pipe grades: ASTM A213 seamless pipes tubes Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes This specification covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes. Grades containing the letter H in their designation have requirements different from those of similar grades not containing the letter H. These different requirements provide higher creep-rupture strength than normally achievable in similar grades without these different requirements. The tubes shall be made by the seamless process and shall be either hot finished or cold finished, as specified. Grade TP347HFG shall be cold finished. Heat treatment shall be done separately and in addition to heating for hot forming. The ferritic alloy and ferritic stainless steels shall be reheated. On the other hand, austenitic stainless steel tubes shall be furnished in the heat-treated condition. Alternatively, immediately after hot forming, while the temperature of the tubes is not less than the minimum solution temperature, tubes may be individually quenched in water or rapidly cooled by other means. Tension test, hardness test, flattening test, and flaring test shall be done to each tube. Also, each tube shall be subjected to the nondestructive electric test or hydrostatic test.
0.05 – 0.15
0.05 – 0.15
0.08 – 0.12
V at 0.18 – 0.25
0.30 – 0.60
0.30 – 0.60
0.30 – 0.60
0.30 – 0.60
0.30 – 0.60
N at 0.030 – 0.070
Ni at 0.40 max
Al at 0.02 max
0.25 – 1.00
0.50 – 1.00
Cb at 0.06 – 0.10
4.00 – 6.00
8.00 – 10.00
1.00 – 1.50
1.90 – 2.60
8.00 – 9.50
Ti at 0.01 max
0.90 – 1.10
0.44 – 0.65
0.87 – 1.13
0.85 – 1.05
Zr at 0.01 max
We are manufacture,we have 12 years experience for supply Metal material and products in domestic.
2.Can you supply what is the service?
We can supply the kinds of metal materials and products,and we also can supply other process services.
3.Can you supply the free sample?
We can supply the free sample,but the sample express freight should be by you.
4.What about your the fast lead time if we place order?
It is normal 7-10 days after receive your deposit.
5.Which payment terms can you accept?
We can accept the TT,Western Union now or Negotiation.
Contact us if you need more details on Hot Rolling Stba25 Stba22 Stba24 Stba20 Stba23 Stba26 Steel Seamless Steel Pipe. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Convenient Installation Carbon Steel Seamless Steel Pipe、Hot Rolling Carbon Steel Seamless Steel Pipe. If these products fail to match your need, please contact us and we would like to provide relevant information.
Product Categories : Seamless Steel Pipe
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