How does stainless steel 347/347H compare to other steel grades commonly used in boiler tube applications?

Stainless Steel 347/347H offers distinct advantages compared to other stainless steel grades commonly employed in boiler tube applications. One notable aspect is its enhanced resistance to intergranular corrosion, a common concern in high-temperature environments. This resistance is achieved by adding niobium, which forms carbides and prevents chromium depletion at grain boundaries. In contrast, other grades like 304 or 316 stainless steel may be susceptible to intergranular corrosion under certain conditions.

Another key differentiating factor is the higher carbon content in stainless steel 347H. This carbon content provides improved high-temperature strength and creep resistance, making it well-suited for applications involving prolonged exposure to elevated temperatures. In contrast, grades like 304H or 316H, while exhibiting similar carbon contents, may not possess the same level of resistance to sensitization and intergranular corrosion as stainless steel 347H.

Table Of Content

Stainless Steel 347 Boiler Tube, SS 347 Boiler Tube, 347H Stainless Steel Boiler Tube, Stainless Steel 347H Boiler Tube, 347 Stainless Steel Boiler Tubing, 347 SS Boiler Tube, SS 347H Boiler Tube, 347 Stainless Steel Boiler Tube, Stainless Steel 347 Boiler Tube Supplier In Mumbai, India.

What are the key properties of stainless steel 347/347H boiler tubes?

Stainless steel 347 boiler tubes possess several key properties that make them highly suitable for boiler applications. These tubes exhibit excellent resistance to intergranular corrosion, which is crucial in high-temperature environments. Adding niobium to the alloy composition forms carbides that prevent chromium depletion at grain boundaries, enhancing the overall corrosion resistance. Stainless steel 347 boiler tubes offer good oxidation and sulfidation resistance at elevated temperatures, ensuring durability in challenging operating conditions. Furthermore, these tubes have high-temperature strength and creep resistance, providing reliability and longevity in boiler applications.

Stainless steel 347H boiler tubes possess several key properties that make them highly suitable for boiler applications. These tubes exhibit excellent resistance to intergranular corrosion, ensuring their reliability in high-temperature environments. The higher carbon content in 347H provides improved high-temperature strength and enhanced creep resistance, making it well-suited for prolonged exposure to elevated temperatures. Moreover, stainless steel 347H boiler tubes offer good oxidation and sulfidation resistance, making them durable in environments with aggressive substances.

Specification Of 347 Stainless Steel Boiler Tube

Boiler Tube Standard ASTM A269, A249, A511, A554 / ASME SA269, SA249, SA511, SA554
Boiler Tube Dimension ANSI/ASME B36.19M, ANSI/ASME B36.10M
Seamless Boiler Tube Sizes 1 / 2" NB - 16" NB
Welded Boiler Tube Sizes 1 / 2" NB - 24" NB
Boiler Tube Outside Diameter 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB available Ex-stock, OD Size Steel Boiler Tubes available Ex-stock
Boiler Tube Manufacturing Process Seamless / Welded / ERW / Fabricated / CDW / 100% X Ray Welded
Stainless Steel Boiler Tube Schedule SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Boiler Tube Length Single Random, Double Random, Standard & Cut length
Delivery Condition Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
Outside Finish 2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Boiler Tubes, Finish as per customer Requirements
Value Added Services Cutting, Beveling, Polishing, Threading, Destructive, Non Destructive, Ultrasonic Testing

347H SS Boiler Tube Weight Calculator, 347 Stainless Steel Superheater Tubes, 347 Stainless Steel Water Tube Boiler, SS 347H Welded Boiler Tube, SS 347 Boiler Tube Price List, Thin Wall Stainless Steel 347 Boiler Tube, Stainless Steel 347 Boiler Tube Stockist In Mumbai.

Types Of Stainless Steel 347 Boiler Tubes

Stainless Steel 347 Seamless Boiler Tube

347 Stainless Steel Seamless Boiler Tube

SS 347 Seamless Boiler Tube, Stainless Steel 347 Seamless Boiler Tube Supplier, Stainless Steel 347 Seamless Boiler Tube Stockist.

Stainless Steel 347 Welded Boiler Tube

347 Stainless Steel Welded Boiler Tube

SS 347 Welded Boiler Tube, Stainless Steel 347 Welded Boiler Tube Supplier, Stainless Steel 347 Welded Boiler Tube Stockist.

Stainless Steel 347 Water Tube Boiler

347 Stainless Steel Water Tube Boiler

SS 347 Water Tube Boiler, Stainless Steel 347 Water Tube Boiler Supplier, Stainless Steel 347 Water Tube Boiler Stockist.

Stainless Steel 347 Boiler Vent Pipe

347 Stainless Steel Boiler Vent Pipe

SS 347 Boiler Vent Pipe, Stainless Steel 347 Boiler Vent Pipe Supplier, Stainless Steel 347 Boiler Vent Pipe Stockist.

Widest Range of 347-347H Stainless Steel Boiler Tubes in Mumbai, India.

  • Widest RangeSchedule 10 Stainless Steel 347 Boiler Tube
  • Widest RangeSchedule XS Stainless Steel 347 Boiler Tube
  • Widest Range347 Metric Stainless Steel Boiler Tubing
  • Widest RangeStainless Steel 347 Fire Tube Boiler
  • Widest RangeSchedule 80 Stainless Steel 347 Boiler Tube
  • Widest RangeSchedule 5 Stainless Steel 347 Boiler Tube
  • Widest RangeSchedule 160 Stainless Steel 347 Boiler Tube
  • Widest RangeSS 347 Seamless Boiler Tube
  • Widest RangeSchedule 40 Stainless Steel 347 Boiler Tube
  • Widest RangeSchedule XXS Stainless Steel 347 Boiler Tube
  • Widest RangeASME SA249 Stainless Steel 347 Boiler Tube
  • Widest Range347 Stainless Steel Boiler Tubing Suppliers
  • Widest Range347 Stainless Steel ERW Boiler Tube
  • Widest RangeASTM A249 Stainless Steel 347 Boiler Tube
  • Widest Range347 Stainless Steel Boiler Tube HS Code
  • Widest RangeASTM A269 Stainless Steel 347H Boiler Tube
  • Widest RangeASME SA269 Stainless Steel 347H Boiler Tube
  • Widest Range347 Stainless Steel Boiler Vent Pipe
  • Widest RangeStainless Steel 347H Round Boiler Tube
  • Widest RangeStainless Steel 347 Boiler Flue Pipe

Check Other Tubes Types In Detail

347 Stainless Steel Boiler Tubes Equivalent Grades

STANDARD WERKSTOFF NR. UNS JIS GOST EN
SS 347 1.4550 S34700 SUS 347 08Ch18N12B X6CrNiNb18-10
SS 347H 1.4961 S34709 SUS 347H - X6CrNiNb18-12

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347 / 347H Stainless Steel Boiler Tubes Price

Product Price
Stainless Steel S34709 Boiler Tube Price US $ 1500 - 2090 / Ton
347 Stainless Steel Boiler Tube Price In India $697.00 - $1,486.00/ Ton
S34700 Stainless Steel Boiler Tube Price US $ 1070 - 3500 / Ton
SS 347 Boiler Tube Price Per Kg $4 - 63 / Kg
SS 1.4550 Welded Boiler Tube Price List US $ 17 - 45 / Pound
ASTM A249 Stainless Steel 347 Boiler Tube Price List $750.00 - $1,980.00/ Ton
Austenitic Stainless Steel 347 Boiler Tube Price Per Piece $4.00 - $150.00/ Piece
347 Stainless Steel Seamless Boiler Tube Price $1,087.00 - $3,889.00/ Ton
347 Stainless Steel Boiler Tube Price US $ 1407 - 12007 / Ton

For Quatation & Questions Related To Stainless Steel 347 Boiler Tubes

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Stainless Steel 347 Boiler Tube Manufacturing Process

Welding Process

The grade and application requirements have an impact on tube welding and forming. For the manufacturing of tiny diameter tubes, we employ TIG welding. Steel sheets are coiled and welded inside of a welding machine. The steel sheets are shaped into a coil before entering the machine. The seam between these coils is then welded to create a Tube.

Drawing/ Floating Process

Pulling a metal bar, rod, or wire through the entirety of a die to change its finish, shape, size, and/or mechanical qualities is known as floating or drawing. The tube's outer, inner, and wall thicknesses are all reduced via the tube drawing procedure. Stainless Steel Tubes benefit from maintaining the integrity of their surface.

Continuous Seamless Tube Mills

The production of seamless tubes has been transformed by continuous tube mills. These mills do away with the necessity for forging welding or filler metal, in contrast to conventional procedures. With the use of this technology, seamless pipes and tubes may be produced continuously, increasing productivity while lowering costs and improving efficiency.

Continuous Casting

A notable advancement in the production of seamless Tubes is continuous casting. The metal is solidified into a continuous billet through the continuous pouring of molten metal into a water-cooled mould. Better uniformity and enhanced mechanical qualities are guaranteed by this continuous casting technique for the Tubes.

Annealing

Metal is heated above the point of re-crystallization and cooled to room temperature during the annealing process. The molecular bonds in metal tighten when it is shaped, making it rigid. The metal is put through an annealing process to regain its ductility.

Sinking Process

Tube sinking is a drawing technique that reduces the diameter of Tubes. In this drawing technique, a tube is run through a die without the need of a mandrel. Good inner surface quality is not ensured when using a mandrel. The die angel determines the integrity of the outer surface. The die being used produces a uniform surface. A tube can be significantly smaller than it was originally. When cost is a factor, Tube sinking is ideal.

Inspection and Testing

Before sending our items to our consumers, we conduct inspection procedures to verify their integrity.


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Chemical Composition Of Stainless Steel 347H Boiler Tube

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

Mechanical Properties Of 347 Stainless Steel Boiler Tubing

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
8.0 g/cm3 1457 °C (2650 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

Testing & Inspection of 347 Stainless Steel Boiler Tubes

Testing (Destructive, Non Destructive)

Positive Material Identification – PMI Testing Hydrostatic Test
Chemical Analysis – Spectro Analysis Hydrogen-Induced Cracking (HIC) Test
Mechanical Testing Such as Tensile, Elongation, Reduction of Area Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177
Micro Test Radiography Test
Macro Test Dye Penetrant Test (DP Test)
Hardness Test Ultra Sonic Test (UT)
Pitting Resistance Test Eddy Current Testing
Intergranular Corrosion (IGC) Test Impact Test
Flaring Test Bend Test
Flattening Test

Stainless Steel 347 Boiler Tube Sizes in MM

BWG BWG BWG BWG BWG BWG BWG BWG
25 22 20 18 16 14 12 10
WT mm WT mm WT mm WT
mm
WT mm WT mm WT mm WT
mm
Outside Diameter Outside Diameter 0.508 0.711 0.889 1.245 1.651 2.108 2.769 3.404
mm inch   kgs/m kgs/m kgs/m kgs/m kgs/m kgs/m kgs/m
6.35 1/4 0.081 0.109 0.133 0.174 0.212      
9.53  3/8 0.126 0.157 0.193 0.257 0.356 0.429    
12.7  1/2   0.214 0.263 0.356 0.457 0.612 0.754  
15.88  5/8   0.271 0.334 0.455 0.588 0.796 0.995  
19.05  3/4   0.327 0.405 0.553 0.729 0.895 1.236  
25.4 1      0.44 0.546 0.75 0.981 1.234 1.574 2.05
31.75 1 1/4   0.554 0.688 0.947 1.244 1.574 2.014 2.641
38.1 1 1/2   0.667 0.832 1.144 1.514 1.904 2.454 3.233
44.5 1 3/4       1.342 1.774 2.244 2.894 3.5
50.8 2          1.549 2.034 2.574 3.334 4.03
63.5 2 1/2       1.949 2.554 3.244 4.214 5.13
76.2 3          2.345 3.084 3.914 5.094 6.19
88.9 3 1/2       2.729 3.609 4.584 5.974 7.27
101.6 4            4.134 5.254 6.854 8.35
114.3 4 1/2         4.654 5.924 7.734 9.43

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Supply Cities Of Stainless Steel 347 And 347H Boiler Tubes

The cities listed here are where we have supplied our grade 347h stainless steel Boiler Tubes in bulk or small orders. Cities from metropolitan to rural areas we can provide SS 347 Boiler Tubes to satisfy the needs of our clients.

Rajkot, Bengaluru, Haryana, Seoul, Gurgaon, Busan, Ho Chi Minh City, Sydney, Dammam, Dubai, New York, Chennai, Atyrau, Hyderabad, Doha, Nagpur, Istanbul, Chandigarh, Perth, Kuala Lumpur, Navi Mumbai, Ranchi, Chiyoda, Indore, Jamshedpur, Petaling Jaya, Ernakulam, Toronto, Riyadh, Colombo, Courbevoie, Granada, Ulsan, Sharjah, Moscow, Bogota, Kuwait City, Ahmedabad, Edmonton, Jakarta, London, Pune, Mumbai, Muscat, Santiago, Los Angeles, Melbourne, Jeddah, Coimbatore, Kolkata, Singapore, Mexico City, Surat, Manama, Jaipur, Baroda, Karachi, Dallas, Al Khobar, Port-of-Spain, Noida, Hong Kong, Vung Tau, Brisbane, Cairo, New Delhi, Madrid, Visakhapatnam, Pimpri-Chinchwad, Geoje-si, Bhopal, Houston, Aberdeen, Ankara, Mumbai, La Victoria, Thane, Vadodara, Tehran, Gimhae-si, Abu Dhabi, Howrah, Montreal, Caracas, Ahvaz, Algiers, Bangkok, Lahore, Secunderabad, Al Jubail, Lagos, Nashik, Milan, Hanoi, Faridabad, Thiruvananthapuram, Kanpur, Ludhiana, Rio de Janeiro, Calgary.

Documents Provided at the time of Domestic Sales or Export of 347/347H Stainless Steel Boiler Tubes

Certificate of Origin Raw Material Test Reports
Commercial Invoice Heat Treatment Charts
Packing List Quality Assurance Plan (QAP)
Fumigation Certificates NABL approved Laboratory Test Reports
Letter of Guarantee Material Test Certificates
ROHS Certificate Certificate of Compliance/Conformity

Application Industries We Supply Stainless Steel 347 Boiler Tubes

347 Stainless Steel Boiler Tubes For Manufacturing, 347 Stainless Steel Boiler Tubes For Factory, 347 Stainless Steel Boiler Tubes For Food Industry, 347H Stainless Steel Boiler Tubes For Production, Stainless Steel 347 Boiler Tubes For Technology, Stainless Steel 1.4550 Boiler Tubes For Waste, UNS S34700 Boiler Tubes For Mining, 347H Stainless Steel Boiler Tubes For Pharmaceutical Industry, 347 Stainless Steel Boiler Tubes For Transport, Stainless Steel 347H Boiler Tubes For Real Estate, Stainless Steel 1.4550 Boiler Tubes For Textile Industry, UNS S34709 Boiler Tubes For Engineering, 347 Stainless Steel Boiler Tubes For Electronics, 347 SS Boiler Tubes For Health care, 347 Stainless Steel Boiler Tubes For Pulp and Paper Industry, 347H Stainless Steel Boiler Tubes For Rail Transport, 347 Stainless Steel Boiler Tubes For Agriculture, 347 Stainless Steel Tubes For Energy, 347H Stainless Steel Boiler Tubes For Tertiary Sector, Stainless Steel 1.4961 Boiler Tubes For Construction, 347 Stainless Steel Boiler Tubes For Chemical Industry.

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