347 Stainless Steel Pipe
347 Stainless Steel Pipe is a stabilized austenitic stainless steel containing Niobium (Columbium) and Tantalum. This stabilization ties up carbon, making the material immune to intergranular corrosion (sensitization) when exposed to high temperatures (800℉-1500℉), especially after welding. It offers excellent high-temperature strength and oxidation resistance. 347 pipe is critical for welded, heavy-gauge high-temperature service in aircraft exhaust manifolds, boiler and pressure vessel piping, and high-temperature chemical processing systems.
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- Commodity name: 347 Stainless Steel Pipe
347 Stainless Steel Pipe is a stabilized austenitic stainless steel containing Niobium (Columbium) and Tantalum. This stabilization ties up carbon, making the material immune to intergranular corrosion (sensitization) when exposed to high temperatures (800℉-1500℉), especially after welding. It offers excellent high-temperature strength and oxidation resistance. 347 pipe is critical for welded, heavy-gauge high-temperature service in aircraft exhaust manifolds, boiler and pressure vessel piping, and high-temperature chemical processing systems.
347 Stainless Steel Pipe Description
Applications
High-Temperature Steam Piping Systems Aircraft Exhaust Manifolds and Ducts Oil Refinery and Petrochemical Piping (FCC Units) Boiler Tube Hangers and Supports Expansion Joints and Flexible Hoses Heat Exchanger Tubing (High Temp) Fluid Catalytic Cracking (FCC) Piping Welded Piping Systems Operating in $427 \text{°C}$ to $816 \text{°C}$ Range Polythionic Acid Service Pipelines Superheater and Reheater Tubes (Power Generation) Product Parameters
Product Name
347 Stainless Steel Pipe
Type
Steel Pipe
Outer diameter
Round Tube
4mm-200mm
Square Tube
10*10mm-100*100mm
Rectangular Tube
10*20mm-50*100mm
Wall Thickness
0.6mm-6.0mm
Length
1-6 meters, Length can be customized
Standard
ASTM, AISI, JIS, GB, DIN, EN, etc.
Surface
Black, Bright Polished, Rough Turning, Matt Surface Treatment, No. 4. BA, etc.
Scope of Application
Common applications for stainless steel pipes include food processing,
Textile operations, Breweries, Water treatment plants, Oil and gas processing,
Fertilizers and pesticides, Chemical applications, Construction, Pharmaceuticals, Auto parts, etc.
Certificate
ISO, SGS, BV, etc.
Production Technology
Hot Rolling, Cold Rolling
Edge Processing
Edging, Trimming
Approximate grade comparison table
UNS EN ASTM JIS GOST ISO S34700 1.4550 (X6CrNiNb18-10) 347 (A312) SUS 347 08Kh18N10B X6CrNiNb18-10 Chemical Composition
C (Carbon) Si (Silicon) Mn (Manganese) P (Phosphorus) S (Sulfur) Cr (Chromium) Ni (Nickel) Nb (Niobium) + Ta (Tantalum) Fe (Iron) ≤0.08 ≤1.00 ≤2.00 ≤0.045 ≤0.030 17.0 - 19.0 9.0 - 13.0 ≥10×C，≤1.0 Balance Mechanical Properties
Tensile Strength (Rm) (MPa) Yield Strength (Rp0.2) (MPa) Elongation A5 (%) Hardness (HRB / HV) ≥515 ≥205 ≥35 ≤92HRB, ≤200HV Physical Performance
Density (g/cm3) Modulus of Elasticity (GPa) Mean Coeff. of Thermal Expansion (10^-6 / deg C) (20-100 deg C) Thermal Conductivity (W/m.K) (100 deg C) Electrical Resistivity (micro-Ohm.cm) (20 deg C) ~8.00 ~193 ~16.6 ~16.3 ~72 -
347 Stainless Steel Pipe - Stock Warehouse
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347 Stainless Steel Pipe - Product Inspection
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347 Stainless Steel Pipe - Product Measurement
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347 Stainless Steel Pipe- Product Packaging
Taigang Yilian
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Taigang Yilian has 10+ warehouses with ready stock. The annual supply capacity is approximately 10 million tons. It has 10 years of experience in large-scale project supply. The customer reorder rate reaches 86%. We ensure quality and quantity, provide material certificates, and will refund if the products are not qualified, so please be assured the purchase.
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