ASTM A213/ A213M TP347H(UNS S34709) is Heat Resistant Stainless Steel Seamless Tube, which is kind of seamless ferritic- austenitic stainless tube and heat exchanger austenitic stainless tube for building boiler and heat exchanger.
ASTM A213 TP347H Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Stainless Tubes, Stainless Pipe
We produced and exported A213 TP347H high quality Seamless stainless pipe or Seamless stainless tube with the range of outer diameter 3.2-200mm, Wall thickness 0.5-12.7mm
The main Steel Grade is ASTM A213 TP347H.
A213 TP347HStainless pipereferenced documents for production
A 262 Practices for Detecting Susceptibility to Intergranular Intergranular Attack in Austenitic Stainless Steels
A 941 Terminology Relating to Steel, Stainless Steel, Related Alloys and Ferroalloys
A 1016/A 1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel Tubes
E 112 Test Methods for Determining Average Grain Size
A213 TP347HStainless Surface Condition
Ferritic alloy cold-finished steel tubes shall be free of scale and suitable for inspection. A slight amount of oxidation is not considered scale.
A213 TP347H Ferritic alloy hot-finished steel tubes shall be free of loose scale and suitable for inspection.
A213 TP347H Stainless steel tubes shall be pickled free of scale. A213 TP347H When bright annealing is used, pickling is not necessary Any special finish requirement shall be subject to agreement between the supplier and the purchaser.