Stainless Steel 347 / 347H EFW Pipes Manufacturer

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We the Silver tubes are one of the leading exporter, stockiest and manufacturer of the product SS 347/347H EFW Pipes in the market today. All our products are designed as per the national as well as the international standard quality of raw materials. This makes our products more durable to use. We tend to manufacture and provide superior quality of products to our respected customers. The product is built with the help of high skilled labors and high-end machinery present.

The EFW in the SS 347/347H EFW Pipes stands for Electric Fusion Welded type of pipes. The pipe division consists of JCO forming press, spiral or helical mill, inside as well as outside welding system, heat treatment, and testing facilities. It can be used in several application industries like the offshore industry, petrochemical industries, refining industries, gas industries, oil industries, etc.

The SS 347/347H EFW Pipes are divided into martensitic, austenitic and ferritic types based on the structure of the product. This type of pipes can easily undergo shock, vibration and high-temperature situations. The addition of the niobium to this Stainless Steel 347/347H EFW pipes makes it more resistant to the intergranular corrosion. It also comprises of great creep strength.

The grade 347 is majorly used for the parts that are intermittently heated and cooled to the temperature ranging from 800 deg F – 1600 deg F.

Testing of the product:-

After the manufacturing of the product is finally done, the SS 347/347H EFW Pipes go through several testing to check and ensure the quality of the final product. This is done to maintain long term relations with our clients that are organized as per the industry guidelines. Some of the tests that the product goes through are third party inspection, chemical test, positive material test, mechanical test, flattening test, flaring test, hardness test, intergranular resistance test, etc.

Stainless Steel 347/347H Pipes

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Stainless Steel 347/347H EFW Pipe Specification
Specifications ASTM A312/ ASME SA312
EFW Pipes 6" NB - 24" NB
Outside Diameter 6.00 mm OD up to 914.4 mm OD, Sizes up to 24" NB available Ex-stock, OD Size Steel Tubes available Ex-stock
Thickness Range 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Type EFW
Form Round Pipes, Square Pipes, Rectangular Pipes
Length Single Random, Double Random & Required Length
End Plain End, Beveled End, Treaded
Outside Finish 2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Pipes, Finish as per customer Requirements
Delivery Condition Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
EN 10216-5 EN 10216 347/347H EFW Steel Pipe, EN 10216-5 1.4550 EFW Steel Pipes for pressure purposes
EN 10217-7 EN 10217 347/347H EFW Steel Pipe, Steel EN 10217-7 1.4961 EFW Pipes for pressure purposes

Stainless Steel UNS S34700/S34709 Electric Fusion Welded Pipes Equivalent Grades

SS 347 S34700 1.4550 X6CrNiNb18-10 SUS 347 08Ch18N12B
SS 347H S34709 1.4961 X6CrNiNb18-12 SUS 347H -

347/347H Stainless Steel EFW Pipes Chemical Composition

Grade C Mn Si P S Cr Cb Ni Fe
SS 347 0.08 max 2.0 max 1.0 max 0.045 max 0.030 max 17.00 - 20.00 10xC – 1.10 9.00 - 13.00 62.74 min
SS 347H 0.04 – 0.10 2.0 max 1.0 max 0.045 max 0.030 max 17.00 - 19.00 8xC – 1.10 9.0 -13.0 63.72 min

ASME SA312 SS TP347/TP347H EFW Pipes Mechanical Properties

Tensile Strength Yield Strength (0.2%Offset) Elongation Hardness
Rockwell B (HR B) max Brinell (HB) max
Psi – 75000, MPa – 515 Psi – 30000, MPa – 205 35 % 92 201
SS 347/347H Pipes
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Supplier and Exporter of Stainless Steel 347/347H EFW Pipes in Cities of India Like

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Supplier and Exporter of Stainless Steel 347 / 347H EFW Pipes in Countries Like

Sweden, Philippines, Chile, Italy, Singapore, India, Mexico, Azerbaijan, Lebanon, New Zealand, Austria, Netherlands, Indonesia, Switzerland, Bangladesh, Brazil, Romania, Saudi Arabia, Vietnam, Turkey, Ghana, Oman, Qatar, Tunisia, Serbia, South Africa, Israel, Lithuania, Macau, Poland, Angola, Iraq, Slovakia, Egypt, Libya, Nigeria, Kuwait, Gambia, Nigeria, Mexico, Australia, Greece, Tibet, Bulgaria, Nepal, Belgium, Malaysia, Hungary, Colombia, Kazakhstan, Bhutan, Pakistan, Denmark, Russia, France, Peru, Czech Republic, Canada, Kenya, Norway, United Arab Emirates, Bolivia, Hong Kong, Taiwan, Iran, United States, Ireland, Croatia, Finland, Iran, Gabon, Trinidad & Tobago, Germany, Poland, Venezuela, Ecuador, Estonia, Thailand, Portugal, Sri Lanka, Ukraine, Spain, Chile, Zimbabwe, Japan, Namibia, Belarus, China, Argentina, Morocco, Yemen, Afghanistan, Jordan, Costa Rica, Bahrain, Algeria, Puerto Rico, Mongolia, South Korea, United Kingdom.