Helical fins tube A312 TP347H A335 P22

What is stainless steel TP347H?

TP347H (1Cr19Ni11Nb) is a high carbon Nb containing Cr Ni austenitic stainless steel. Because it contains the stabilizing element Nb, it has good resistance to intergranular corrosion and polysulfate intergranular stress corrosion. Its corrosion resistance in acid, alkali, salt and other corrosive media is similar to that of 18-8 austenitic stainless steel containing Ti. Therefore, it is widely used in boiler, power generation, petroleum, chemical industry, synthetic fiber, food, paper and other industries. It is used for superheater tubes, reheater tubes, steam pipes of large boilers and heat exchangers in petrochemical industry.

26 pieces 5” sch 80 A312TP347H X 12’-8” lg. BBE.

2 pieces 5” sch 80  A312TP347H X 14’-0” lg. BBE.

4 pieces 5” sch 80 A312TP347H X 14’-8” lg. BBE.

12 pieces 4” sch 80 A312TP347H X 12’-8” lg. BBE.

14 pieces 4” sch 80 A312TP347H Seamless X 12’-8” c/w helical fins X 0.06” fins thick X 1” Fins Hight X 60 fins/ft. 2” bare for each end, 11% Cr. fins.

4 pieces 4” sch 80 A312TP347H Seamless X 12’-8” c/w helical fins X 0.06” fins thick X 1” Fins Hight X 36 fins/ft. 2” bare for each end, 11% Cr. fins.

2 pieces 4” sch 80 A312TP347H Seamless X 14’-8” c/w helical fins X 0.06” fins thick X 1” Fins Hight X 60 fins/ft. 2” bare for one end and 1’-10” for other, 11% Cr.  fins.

30 pieces 5” sch 80 180 deg. U Bend SR elbow A403WP347H.

28 pieces 4” sch 80 180 deg. U bend SR elbow A403WP347H.

10 pieces 5” CL-1500 RFWN Flange A182F34H sch 80 bore.

2 pieces 4” CL-1500 RFWN Flange A182F34H sch 80 bore.

8 pieces 1” CL-6000 SCRD coupling SS347H or weld o let.

A335P22 alloy steel pipe is mainly used for high pressure and high temperature pipes and equipment in power plants, nuclear power plants, high pressure boilers, high-temperature superheaters and reheaters. It is made of carbon steel, alloy structural steel and stainless heat-resistant steel by hot rolling (extrusion, expansion) or cold rolling (drawing).

Chemical composition of P22 steel: C<=15%; Mn 0.3~0.6%； P<=0.03%； S<=0.03%； Si<=0.5%； Cr1.9~2.6%； Mo 0.87~1.13%

26 pieces 4” sch 80 A335P22 X 8’ lg. BBE

2 pieces 4” sch 80 A335P22 X 9’-4” lg. BBE

4 pieces 4” sch 80 A335P22 X 10’ lg. BBE

12 pieces 3 ½” sch 80 A335P22 X 8’ lg. BBE

12 pieces 3 1/2” sch 80 A335P22 X 8’ c/w helical fins X 0.06” fins thick X .75” Fins Hight X 60 fins/ft. 2” bare for each end, 11% Cr. fins.

4 pieces 3 1/2” sch 80 A335P22 X 8’  c/w helical fins X 0.06” fins thick X .75” Fins Hight X 36 fins/ft. 2” bare for one end, 11% Cr. fins.

2 pieces 3 1/2” sch 80 A335P22 X 10’ c/w helical fins X 0.06” fins thick X .75” Fins Hight X 36 fins/ft. 2” bare for one end, and 1’-10” other end, 11% Cr. fins.

30 pieces 4” sch 80 180 deg. U Bend SR elbow A234WP22.

26 pieces 3 ½” sch 80 180 deg. U Bend SR elbow A234WP22.

2 pieces 4” x 3 ½” sch 80 con. Reducing A234WP22

12 pieces 4” CL-1200 RFWN Flange A234WP22 sch 80 bore.

8 pieces 1” CL-6000 SCRD coupling A335P22.