ASTM A312 TP347 High Frequency Welded Pipe
Type：Welded
Section Shape：Round
Outer Diameter：6~914mm/(1/8"~36")
Thickness：1~45mm/Sch10s~Sch XXS
Length：1500mm~12000mm,as customized.
Technique：Hot-rolled/Cold-rolled/Cold drawing
introduction
ASTM A312 TP347 High Frequency Welded Pipe Made of austenitic stainless steel (UNS S34700) containing niobium (Nb), formed by high frequency resistance welding (ERW) process, it has excellent high temperature intergranular corrosion resistance and high efficiency welding characteristics, and is suitable for fluid transportation in high temperature, high pressure and sensitized environments.
ASTM A312 TP347 high frequency tube welding
Advantages of ASTM A312 TP347 high-frequency welded pipe
ASTM A312 TP347 high-frequency welded pipe is formed by high-frequency current heating: the weld heat-affected zone is narrow (≤1mm), reducing grain coarsening and maintaining the corrosion resistance of the parent material. After welding, deburring and solution annealing (1040-1100℃ rapid cooling) are optional to ensure that the mechanical properties of the weld are consistent with the parent material, and the corrosion resistance is significantly better than ordinary 304 stainless steel.
ASTM A312 TP347 stainless steel welded pipes undergo 100% eddy current testing (ET) + water pressure testing (≥1.5 times the working pressure) before leaving the factory. The weld has no pores or cracks, meeting the stringent requirements of ASTM A312 for welded pipes.
Why choose GNEE
GNEE is a professional ASTM A312 standard stainless steel pipe manufacturer and exporter, exporting 10,000 tons to overseas markets every year.
If you need to know the price, test report or customized specifications of ASTM A312 TP347 high frequency welded pipe, please contact our industrial pipeline experts to get the "TP347 Stainless Steel Welded Pipe Technology White Paper" and temperature and corrosion resistance performance data for free!
Specification Chart of ASTM A312 TP347 SS ERW Pipe
ASTM A312 SS 347 Stainless Steel Pipe Mechanical Characteristics
| AISI | Tensile Strength minimum (MPa) | Yield Strength 0.2% Proof minimum (MPa) | Elongation minimum (% in 50mm) | Hardness | |
| Rockwell B (HR B) maximum | Brinell (HB) maximum | ||||
| 347 | 515 | 205 | 40 | 95 | 201 |
A312 TP347 stainless exhaust pipe Composition Analysis
| ASTM A312 | Mn | Si | C | Ni | P | S | Cr | Mo | N | |
| TP347 | min. | - | - | - | 9.0 | - | - | 17.0 | 2.00 | - |
| max. | 2.0 | 1.00 | 0.08 | 13.0 | 0.045 | 0.030 | 20.0 | 3.00 | - | |
Specification Chart of ASTM A312 TP347 pipe
| ANSI Standard | ANSI/ASME B36.19M, ANSI/ASME B36.10M |
| Shapes and Types | Hydraulic, Rectangle, Honed, Square, Hex, Round |
| Types of Delivery Conditions | Annealed and Pickled, Bright Annealed, Polished, Cold Drawn |
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