ASTM A358 / ASME SA358 EFW Pipes

ASTM A358 / ASME SA358 Stainless Steel EFW Pipe

Large-OD electric-fusion-welded pipe — Classes 1–5

Savoy Piping Inc. supplies ASTM A358 EFW stainless pipe when projects need large outside diameters with defined weld class, NDE and heat treatment.

304L · 316L · 321 · 347 · SS hub

What is A358 EFW pipe?

Plate is formed and fusion-welded into pipe. Class selection controls inspection and PWHT — quote OD, wall, grade and class together.

Typical applications

• Large-diameter process and utility stainless lines
• Refinery and chemical plant headers
• Water treatment and desalination stainless piping

Selection guidance

If the PO says A312 seamless/ERW, do not switch to A358 without engineer approval. For duplex EFW use ASTM A928.

ASTM A358 Stainless Steel EFW Pipes range

ASTM A358 / ASME SA358 Stainless Steel EFW Pipes

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.

ASTM A358 Stainless Steel EFW Pipes Plate And Filer Metal Specification

astm A358 Stainless Steel EFW Pipes Apllicantion

The A358 EFW Pipes is used in the following Applications:-

• Cryogenic Industry
• LNG Gas
• Offshore Industry
• Process Plants
• Sub Sea
• Refineries etc.

Frequently asked questions — ASTM A358 Stainless EFW Pipe

What is ASTM A358?

A358 covers electric-fusion-welded austenitic stainless steel pipe, commonly used for larger diameters where seamless is impractical.

What do A358 classes mean?

Classes (1–5) define weld reinforcement, radiography and heat-treatment packages — pick the class named on the datasheet.

A358 vs A312 welded?

A312 covers smaller welded/ERW and seamless pipe; A358 is the EFW route for many large-OD stainless lines.

Which grades are available?

Commonly 304/304L, 316/316L, 321/321H, 347/347H, 309S, 310S, 317L, 904L — see grade pages.

Supplying A358 Stainless Steel EFW Pipes to Countries -

We Export ASTM A358 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 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 Stainless Steel EFW Pipe in India and Overseas, offering a wide range of ASTM A358 Stainless Steel EFW Pipes