Delivering High Quality Stainless Steel and Alloy Piping Products — Pipes, Tubes, Fittings, Flanges and more for Global Industries.
sales@savoypipinginc.com
Delivering High Quality Stainless Steel and Alloy Piping Products — Pipes, Tubes, Fittings, Flanges and more for Global Industries.
sales@savoypipinginc.com
Savoy Piping Inc. supplies A358 Grade 347 EFW pipe — Nb-stabilised austenitic widely used in refinery high-temperature and welded process piping.
Grade hub · A312 Seamless · A312 Welded · A213 · A269 · A358 EFW · SS hub · A358 hub
Large-OD fusion-welded 347 pipe. Chemistry: 18Cr-8Ni niobium (columbium) stabilised.
Use 347 when the materials class calls for Nb stabilisation. Twin: 321. Always state A358 class with OD × wall.
| ASTM A358 Grade 347 Stainless Steel EFW Pipes Specification | ASTM A358 / ASME SA358 |
| ASTM A358 Grade 347 Stainless Steel EFW Pipes Specification | A / SA358 CLASS 1, A / SA358 CLASS 2, A / SA358 CLASS 3, A / SA358 CLASS 4, A / SA358 CLASS 5 |
| ASTM A358 Grade 347 Stainless Steel EFW Pipes Grades | 304, 304L, 304H, 309S, 310S, 316, 316L, 316H, 317L, 321, 321H, 347, 347H, 904L ETC. |
| ASTM A358 Grade 347 Stainless Steel EFW Pipes Type | EFW, Electric Fusion Welded |
| ASTM A358 Grade 347 Stainless Steel EFW Pipes Outer Diameter Size | Electric Fusion Welded / ERW- 8" NB to 110" NB (Nominal Bore Size) |
| ASTM A358 Grade 347 Stainless Steel EFW Pipes Wall Thickness | Schedule 10 to Schedule 160 (3 mm to 100 mm Thickness) |
| ASTM A358 Grade 347 Stainless Steel EFW Pipes Length | 01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size. |
| ASTM A358 Grade 347 Stainless Steel EFW Pipes Ends | Plain Ends / Beveled Ends |
| ASTM A358 Grade 347 Stainless Steel EFW Pipes Delivery Conditions | As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered |
| ASTM A358 Grade 347 Stainless Steel EFW Pipes Coating | Electropolish, Mechanical Polish, Satin Finish, Passivated |
| ASTM A358 Grade 347 Stainless Steel EFW Pipes Other Testing | Product Analysys/Chemical Analysis, Tensile Test at room temperature and hot tensile test, Bend Test, Impact Test up to -196°C, Micrograp HIC Examination up to 500X, Macrograp HIC Examination, Ferrite Counting, Examination acc. to ASTM E562, Corrosion Test (ASTM A262; ASTM A923; ASTM G48; ASTM G28), Hardness Test (also NACE MR 01-75), Drop weight tear test (DWTT) Hydrogen-Induced Cracking (HIC), Sulphide Stress Corrosion Cracking (SSCC), Sulphide Stress Corrosion Cracking (SSCC), X-Ray Testing (Radiograph HIC & Radioscopic examination & Digital), Liquid Penetrant Examination, Ultrasonic Examination (and PAUT), Magnetic Particle Examination, Hydrostatic Test, Positive Material Identificantion (PMI Testing) |
| ASTM A358 Grade 347 Stainless Steel EFW Pipes Dimension | All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM And ASME |
| ASTM A358 Grade 347 Stainless Steel EFW Pipes Value Added Services | Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment |
| ASTM A358 Grade 347 Stainless Steel EFW Pipes Packaging | Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
| ASTM A358 Grade 347 Stainless Steel EFW Pipes Shipment & Transportation | By Road - Truck / Train, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 4 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes |
| ASTM A358 Grade 347 Stainless Steel EFW Pipes Material Test Certificate | Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC |
Standard Specification for Electric-Fusion-Welded Austenitic Chromium-Nickel Stainless Steel Pipe for High-Temperature Service and General Applications
ASTM A358 Stainless Steel EFW Pipes specification covers electric-fusion-welded austenitic chromium-nickel stainless steel pipe suitable for corrosive or high-temperature service, or both, or for general Applications.
The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as “nominal diameter,” “size,” and “nominal size.”
This specification covers the grades of alloy and stainless steel listed in Table 1. The selection of the proper grade and requirements for heat treatment shall be at the discretion of the purchaser, dependent on the service conditions to be encountered.
Five classes of pipe are covered as follows:
ASTM A358 Class 1 - Pipe shall be double welded by processes employing filler metal in all passes and shall be completely radiographed.
ASTM A358 Class 2 - Pipe shall be double welded by processes employing filler metal in all passes. No radiography is required.
ASTM A358 Class 3 - Pipe shall be single welded by processes employing filler metal in all passes and shall be completely radiographed.
ASTM A358 Class 4 - Same as Class 3 except that the weld pass exposed to the inside pipe surface may be made without the addition of filler metal (see 6.2.2.1 and 6.2.2.2).
ASTM A358 Class 5 - Pipe shall be double welded by processes employing filler metal in all passes and shall be spot radiographed.
Supplementary requirements covering provisions ranging from additional testing to formalized procedures for manufacturing practice are provided. Supplementary Requirements S1 through S6 are included as options to be specified when desired.
The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.
347 stainless steel (uns nos34700) Alloy 347 (UNS S34700) is columbium stabilized austenitic stainless steel plate with good general corrosion resistance and somewhat better resistance in strong oxidizing conditions than 321 (UNS S32100). It has excellent resistance to intergranular corrosion after exposure to temperatures in the chromium carbide precipitation range of 800 – 1500°F (427 – 816°C). The alloy has good oxidation resistance and creep strength to 1500°F (816°C). It also possesses good low temperature toughness.
Alloy 347H (UNS S3409) stainless steel plate is the higher carbon (0.04 – 0.10) version of the alloy. It was developed for enhanced creep resistance and for higher strength at temperatures above 1000°F (537°C). In most instances, the carbon content of the plate enables dual Certification.
Alloy 347 stainless steel plate cannot be hardened by heat treatment, only by cold working. It can be easily welded and processed by standard shop fabrication practices.
Typical compositional ranges for grade 347 stainless steels Pipes
| UNS No | Grade | C | Si | Mn | P | S | Cr | Mo | Ni | N | Other |
| S34700 | 347 | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 17.00/19.00 | – | 9.00/13.00 | – | Cb:10xC1.00 |
Mechanical Properties of 347 grade stainless steel
| UNS No | Grade | Proof Stress 0.2% (MPa) |
Tensile Strength (MPa) |
Elongation A5(%) |
Hardness Max | |
| HB | HRB | |||||
| S34700 | 347 | 205 | 515 | 40 | 201 | 92 |
Physical properties of 347 grade stainless steel in the annealed condition
| Properties | Metric | Imperial |
| Density | 7.7 – 8.03 g/cm3 | 0.278 – 0.29 lb/in³ |
Grade specifications for 347 grade stainless steel
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| 321 | S32100 | 321S31 | 58B, 58C | 1.441 | X6CrNiTi18-10 | 2337 | SUS 321 |
| 321H | S32109 | 321S51 | - | 1.4878 | X10CrNiTi18-10 | - | SUS 321H |
| 347 | S34700 | 347S31 | 58G | 1.450 | X6CrNiNb18-10 | 2338 | SUS 347 |
| These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted. | |||||||
| Grade | UNS Designation | Material, Type | Astm Plate Specifiecantion No. and Grade | Filler Metal classification and UNS Designation for Applicable Specification | |||||||
| A5.4 | A5.9 | A5.22 | A5.30 | ||||||||
| Class. | UNS | Class. | UNS | Class. | UNS | Class. | UNS | ||||
| W31040 | |||||||||||
| W31743 | |||||||||||
| 321 | S32100 | 321 | A 240 Type 321 | E347 | >W34710 | ER321 | S32180 | E347T | >W34733 | IN348 | S34780 |
| W32140 | |||||||||||
| ER347 | S34780 | ||||||||||
| W34740 | |||||||||||
| 347 | S34700 | 347 | A 240 Type 347 | E347 | W34710 | ER347 | S34780 | E347T | W34733 | IN348 | S34780 |
| W34740 | |||||||||||
The A358 EFW Pipes is used in the following Applications:-
Electric-fusion-welded 347 stainless pipe (UNS S34700) to ASTM A358 / ASME SA358 with a specified class.
Large OD / wall combinations are often more practical as EFW from plate when the PO allows A358.
Classes define radiography and heat treatment — quote the class on every enquiry.
See A312 TP347 seamless/welded for smaller OD packages.
We Export ASTM A358 Grade 347 Stainless Steel EFW Pipes to Saudi Arabia, Iran, Iraq, United Arab Emirates, Qatar, Bahrain, Oman, Kuwait, Turkey, Egypt, Yemen, Syria, Israel, Jordan, Cyprus, Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Myanmar, Taiwan, Cambodia, Argentina, Bolivia, Brazil, Chile, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay, United States of America, Canada, Mexico, Panama, Costa Rica, Puerto Rico, Trinidad And Tobago, Jamaica, Bahamas, Denmark, Russia, Norway, Germany, France, Italy, United Kingdom, Spain, Ukraine, Netherlands, Belgium, Greece, Czech Republic, Portugal, Hungary, Albania, Austria, Switzerland, Slovakia, Finland, Ireland, Croatia, Slovenia, Malta, Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Equatorial Guinea, The Republic Of Congo, Gabon, Europe, Africa, Asia, North America, South America, Middle East, Far East.etc
Savoy Piping Inc. is a well known worldwide Exporter of ASTM A358 Grade 347 Stainless Steel EFW Pipes, Savoy Piping Inc. is committed to provide each and every customer with the highest standard of customer service. We deal in ASTM ASTM A358 Grade 347 Stainless Steel EFW Pipe in India and Overseas, offering a wide range of ASTM A358 Grade 347 Stainless Steel EFW Pipes