Description
Diameter:16-1016mm
Thickness: 2—120mm
Steel Grade: P1 P2 P5 P9 P11 P12 P22
Surface: Oiled, Black Painted To Prevent Rust
Application Fileds:Industrial Boilers, Power Plants, Nuclear Plants
How To Define Alloy Pipes?
Alloy Pipes Are Tubular With Higher Percentages, Than Standard Carbon Steel Pipes, Of Alloying Elements As Molybdenum (Mo), Chromium (Cr), Nickel, Etc. Actually, The Astm A335 Covers “Low-Alloy” Steel Pipes, I.E. Pipes That Have A Total Amount Of Alloying Elements Below 5%. The Addition Of Higher Percentages Of Alloying Elements (For Example Nickel And Chromium) Transforms The Steel Into Higher Alloys, Like Stainless Steel, Duplex, Up To Super-Alloyed Materials Like Inconel, Hastelloy, Monel, Etc.
Alloy Steel Pipes Are Used In The Energy Industry For High Temperature And Very Low-Temperature Service (Cryogenic), Or Applications With Very High Pressures.
Astm A335 Alloy Steel Pipes Fit Astm A234 Wpx Series Buttweld Fittings (Wp5, Wp9, Wp91) And A182 Fx Forged Fittings And Flanges (A182 F5, F9, F11, F22, F91). All These Materials Have Similar Chemical And Mechanical Properties And Can Be Joined Or Welded.
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
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.
Alloy Steel Seamless Pipes (Ibr Approved)
Alloy Steel Seamless Pipes (Ibr) Offered By Us Is Made Of Alloy Steel And Feature Exceptional Performance Properties. These Are Developed For Energy-Related Applications Involving Oil & Gas Drilling And Therefore Are Subjected To Stresses In Machine Parts. Further, Alloy Steel Tubes Are Also Used In Domestic, Professional Or Industrial Areas. Alloy Steel Seamless Pipes (Asme Sa335 Grade P5)
Alloy Steel Seamless Pipes (Asme Sa335 Grade P5) Offered By Us Are Made Available In Asme Sa335 As Well As P1, P5, P9, P11, P12, P91 Grades. Our Expertise Lies In Offering These In Different Sizes & Schedules, With Ibr & Latest Edition Nace Mr 0175 Reports.
Asme Alloy Steel Seamless Tubes/ Pipes (Sa335 Grade P9)
Asme Alloy Steel Seamless Tubes/ Pipes (Sa335 Grade P9) Manufactured, Supplied And Exported By Us Are Used For Various Industrial Applications. Our Specialization In Offering Precision Engineered Alloy Steels Allow Us To Deliver These For Various Engineering Applications In Various Grades Like A-387 Gr. P1, P5, P9, P11, P12, P22, P91, Astm A-335 And Others. The Other Specifications Include:
Alloy Steel Pipes (Astm A335 P11)
Alloy Steel Pipes (Astm A335 P11) Offered By Us Are Made As Per Ibr Standards And Are Used Mainly For Boiler Operations. We Source These Seamless Pipes In Varied Size Range. Further, We Can Also Get These Customized As Per Boiler Piping Requirements. For Ensuring In Them Optimum Quality Standards, We Source These From Quality Manufacturers. We Also Offer Clients Of Having Their Own Mark On Them.
Alloy Steel Pipes (Astm A335 P12)
Alloy Steel Pipes (Astm A335 P12) Offered By Us Are Available With Astm A335 P12 Standard And Finds Application In Industries Like Petrochemicals, Refineries, Fertilizers, Pharmaceuticals And Others. We Can Source These Seamless Pipes In Size Range Of Up To 26 Inches.
Alloy Seamless Pipes (Astm A335 Grade P91 Nace)
Alloy Seamless Pipes (Astm A335 Grade P91 Nace) Offered By Us Are Made Available In Astm A335 Grades. Made As Per Ibr Standards, These Are Mainly Used In Boiler Operations. Further, Our Expertise Lies In Offering These Pipes In Various Size Range As Well As In Customized Parameters As Per Boiler Piping Requirements. Sourced From Quality Conscious Manufacturers, We Also Offer Our Clients The Option Of Adding Their Own Mark On Them.
Specification
astm a335 steel pipe chemical composition:
| material | c | si | mn | p | s | mo | cr |
| % | % | % | % | max | % | max | |
| a335 grade p1 | 0.10—0.20 | 0.10—0.50 | 0.30—0.80 | 0.025 | 0.025 | 0.440.65 | |
| a335 grade p5 | max 0.15 | max 0.50 | 0.30—0.60 | 0.025 | 0.025 | 0.450.65 | 4.006.00 |
| a335 grade p11 | 0.05—0.15 | 0.5—1.0 | 0.30—0.60 | 0.025 | 0.025 | 0.450.65 | 1.001.50 |
| a335 grade p12 | 0.05—0.15 | max 0.50 | 0.30—0.61 | 0.025 | 0.025 | 0.450.65 | 0.801.25 |
| a335 grade p22 | 0.05—0.15 | max 0.50 | 0.30—0.60 | 0.025 | 0.025 | 0.871.13 | 1.902.60 |
astm a335 steel pipe mechanical properties:
| material | tensile n/mm2 | strength min n/mm2 | yield %min |
| a335 grade p1 | min380 | 205 | 30 |
| a335 grade p5 | min415 | 205 | 30 |
| a335 grade p11 | min415 | 205 | 30 |
| a335 grade p12 | min415 | 205 | 30 |
| a335 grade p22 | min415 | 205 | 30 |
stm a335 steel pipe may be either hot finished or cold drawn with the finishing heat treatment noted below.
| astm a335 grade | heat treatment type | normalizing temperature range f [c] | subcritical annealing or tempering temperature range f [c] |
| p5 (b,c) | full or isothermal anneal | ||
| normalize and temper | – | 1250 [675] | |
| subcritical anneal (p5c only) | – | 1325 – 1375 [715 – 745] | |
| p9 | full or isothermal anneal | ||
| normalize and temper | – | 1250 [675] | |
| p11 | full or isothermal anneal | ||
| normalize and temper | – | 1200 [650] | |
| p22 | full or isothermal anneal | ||
| normalize and temper | – | 1250 [675] | |
| p91 | normalize and temper | 1900-1975 [1040 – 1080] | 1350-1470 [730 – 800] |
| quench and temper | 1900-1975 [1040 – 1080] | 1350-1470 [730 – 800] |
Standard
CHEMICAL COMPOSITION
The types of alloy steel covered by the ASTM A335 – ASME SA335 specification are designed with a “P” prefix, from P5 to P92. Grades P11/P22 and P91/92 are typically found in power stations, whereas grade P5 and P9 are more common for application in the petrochemical industry. Grades P9 and P91 are in the list, the more expensive.
| ASTM A335 Low-Alloy Steel (Grades) |
UNS equivalent |
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 Low-Alloy Pipe | UNS Number | Yield Strength ksi | Tensile Strength ksi | Elongation % | Rockwell | Brinell |
| P1 | K11522 | 30 | 55 | 30 | – | – |
| P2 | K11547 | 30 | 55 | 30 | – | – |
| P5 | K41545 | 40 | 70 | 30 | – | 207 max |
| P9 | S50400 | 30 | 60 | 30 | – | – |
| P11 | K11597 | 30 | 60 | 20 | – | – |
| P12 | K11562 | 32 | 60 | 30 | – | 174 max |
| P22 | K21590 | 30 | 60 | 30 | – | – |
| P91 | K91560 | 60 | 85 | 20 | – | – |
TESTING REQUIREMENTS
Transverse/longitudinal: tension and flattening, hardness, bend tests- for material that has been heat-treated in batch furnaces, these tests shall be made on the 5% of the pipes from each heat lot number. For smaller lots, one pipe at a minimum has to be tested
ASTM A335 Gr. P91 shall have a hardness of 250 HB / 265 HV (25 HRC)
Hydro testing: shall be applied to every length of pipe
The non-destructive electric test is optional
