Seamless stainless steel heat exchanger tubing SA213 TP347H Cold Drawn Pickled​

Type 347 stainless steel has slightly improved corrosion resistance over type 321 stainless steel in strongly oxidizing environments. Type 347 is stabilized with columbium, it is preferable for aqueous and low temperature environments due to its good resistance to intergranular attack. Both 347 and 321 offer good resistance to polythionic acid stress corrosion cracking, encountered in oil refineries. The high temperature oxidation resistance of 347 is similar to that of 304 stainless steel. Useful to 1500°F.

Stainless Steel Tube Standards:

American standards:

ASTM A249: Standard specification for welded austenitic steel boiler,superheater, heat-exchanger and condenser tubes.

ASTM A269:Standard specification for welded austenitic stainless steel tubing for general service.

ASTM A688:Standard specification for welded austenitic stainless steel feedwater heater tubes.

ASTM A554:Standard specification for welded stainless steel mechanical tubing.

ASTM A268:Specification for seamless and welded Ferritic/Martensitic stainless steel tubing for General Service

ASTM A789:Specification for seamless and welded Ferritic/Austenitic stainless steel tubing for General Service

ASTM A312:Seamless/Welded austenitic stainless steel pipe

Germanic standards:

DIN17455:General purpose welded circular stainless steel tubes

DIN17457: Welded circular austenitic stainless steel tubes subject to special requirements; technical delivery conditions

European Standard:

EN 10217-7:Welded Steel Tubes for pressure purposes-Part 7 Stainless steel tubes


U-Bent Tubes

SPEZILLA Tube heat exchanger tubes can also be supplied as 'u' bends or serpentines, manufactured according to various heat exchanger standard or to customer's own specifications.

Standard Technical Range

• OD 9.5mm - 38.1mm
• WT up to 6.35mm
• Bending radii 1.25 x OD up to 1700mm
• Bends can be supplied in accordance with TEMA R / ASTM SA/A556
• Leg length up to 15000mm
• Heat treatment where required by electric furnance or direct resistance
• Hydrotesting up to 10,000 psi

Additional Testing

• Dye penetrant of 'U' bend area
• PMI testing
• Heat Treatment

Heat Treatment

We are equipped to carry out heat treatment of bends plus a minimum 150mm of leg.

Heat Treatment Equipment

• Heat treatment equipment is computer controlled with the added facility of data recording.
• An argon protective atmopshere is used inside stainless and special alloy tubes during heat treatment.
• We can provide all types of annealing; solution annealing and stress relieving.

SA-213-TP347H

Spezilla specialise in manufacturing high quality precision stainless steel tube and other corrosion resistant alloy tubes that are designed to industry and customer specifications. Our products are manufactured to the highest quality standards and are very competitively priced. Our mission is to provide customized, flawless, reliable, and affordable corrosion resistant steel tubes to the world.

Tube Type:            Welded, Welded & Drawn. Straight Length or Coils.

Tube Materials:      Austenitic:    304, 304L, 316L, 321, 316Ti, 317L, 904L, 254 SMO;

                                                   1.4301, 1.4307, 1.4401, 1.4404, 1.4541, 1.4571, 1.4539, 1.4547;

                              Duplex:         2205, 2507;  1.4462, 1.4410;  

                              Ferritic:         409, 439, 441, 444; 1.4512, 1.4510, 1.4509, 1.4521;

                              Nickel Alloy:  800, 800H, 800HT, 825, C276; 1.4876, 1.4958, 1.4959, 2.4858, 2.4819;

                              Titanium:       Gr.1, Gr.2;

Tube Size:              O.D. 4.00 - 38.10MM, W.T. 0.30 - 3.0MM.

Tube Finish:           As Welded, Bright Annealed, Annealed & Pickled, Polished, Custom Cutting.

Tube Standards:    ASTM A249, A268, A269, A270, A688, A789, B338;

                               EN 10217-7 TC1 & TC2, EN 10296-2, EN10357 etc.

Applications:          Heat Exchangers, Food & Beverage, Heating Elements, Automative, Tube Manipulation etc.

Spezilla appreciates the opportunity to help you with your questions about our operations, our products, our services or any other aspect of our business. We understand the demands of placing orders and the need for fast quotes, so we guarantee a response in 24 hours or less.